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Schweitzer Engineering Laboratories SEL-351R Instruction Manual

Schweitzer Engineering Laboratories SEL-351R Instruction Manual

Recloser control

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Quick start installation and user manual (132 pages)

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SEL-351R

RECLOSER CONTROL

INSTRUCTION MANUAL

IMPORTANT: Use this manual in conjunction with the SEL-351R

Quick-Start Installation and User's Guide.

SCHWEITZER ENGINEERING LABORATORIES

2350 NE HOPKINS COURT

PULLMAN, WA USA 99163-5603

TEL: (509) 332-1890

FAX: (509) 332-7990

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Summary of Contents for Schweitzer Engineering Laboratories SEL-351R

Page 1 SEL-351R RECLOSER CONTROL INSTRUCTION MANUAL IMPORTANT: Use this manual in conjunction with the SEL-351R Quick-Start Installation and User’s Guide. SCHWEITZER ENGINEERING LABORATORIES 2350 NE HOPKINS COURT PULLMAN, WA USA 99163-5603 TEL: (509) 332-1890 FAX: (509) 332-7990...
Page 2 5,041,737; 5,479,315; 5,793,750; 5,694,281; and U.S. Patent(s) Pending, and Foreign Patent(s) Issued and Pending. This product is covered by the standard SEL 10-year warranty. For warranty details, visit www.selinc.com or contact your customer service representative. Note: The 24 Vdc battery inside the SEL-351R Recloser Control enclosure is excluded from the product warranty. PM351R-01...
Page 3 - Additional screen captures for SHO G and SHO FZ commands on an SEL-351R-2 show the new phantom voltage setting. - The descriptions of SHO L and SHO T now mention the availability of eight additional latch, local, and remote bits and display points.
Page 4 - Created a description of an SEL analog compare statement, which is now OGIC available in the SEL-351R-2, and added the processing slot for the counters to Table G.3. Appendix H: - Updated the DNP map in Table H.3 to show the new capabilities of the SEL-351R-2.
Page 5 - Corrected explanation for column “32 NG” in Table 12.3 (“F32I” and “R32I” should be “F32N” and “R32N”, respectively; corresponding symbols should be “N” and “n”. Appendix A: - Updated firmware version information. Date Code 20020215 Manual Change Information SEL-351R Instruction Manual...
Page 6 - Added note to the TAR R command explanation that the target LEDs no longer reset if a TRIP condition is present. - Corrected Relay Word bit entries 32NE (row TAR 15) and F32N and R32N (row TAR 17) in Table 10.6. Manual Change Information Date Code 20020215 SEL-351R Instruction Manual...
Page 7 SYNCP accounts for the constant angle difference between reference voltage input VA and synchronism check voltage input VS. Section 7: - Clarified the operation of the latch control switches when the SEL-351R Recloser Control loses power (see the Latch Control Switches subsection). Section 8:...
Page 8 Figure 4.11: Zero-Sequence Voltage-Polarized, Neutral-Current Directional Element for Neutral Ground Overcurrent Elements Figure 4.13: Routing of Directional Element to Neutral Ground Overcurrent Elements Figure 4.15: Direction Forward/Reverse Logic for Neutral Ground Overcurrent Elements Manual Change Information Date Code 20020215 SEL-351R Instruction Manual...
Page 9 - Corrected the designation for the ECLASS setting in Table H.1. 981216 This revision includes the following changes: - Updated references to figures in the SEL-351R Quick-Start Installation and User’s Guide throughout manual (no date code change). Section 1: - Added Table 1.2 to clarify the function of the overcurrent elements when the factory default EZ settings are active for a particular settings group.
Page 10 - Changed battery amp-hour rating from 6.5 to 8.0 Ah (factory-shipped batteries have changed as detailed in the Battery Replacement subsection in the Battery section of the SEL-351R Quick-Start Installation and User’s Guide). Note: The Battery Amp-hours setting was not changed in the factory-default global settings listed in SHO Command (Show/View Settings) in Section 10: Serial Port Communications and Commands –...
Page 11 Breaker Monitor, Metering, and Load Profile Functions. - Changed entry “Obj. 50, Var. 1, Time and Date” in Table H.2 in Appendix H: Distributed Network Protocol (DNP) V3.00. 980710 New Manual Release. Date Code 20020215 Manual Change Information SEL-351R Instruction Manual...
Page 13 Appendix F: Setting Negative-Sequence Overcurrent Elements ® Appendix G: Setting SEL Control Equations OGIC Appendix H: Distributed Network Protocol (DNP) V3.00 Appendix I: ™ IRRORED SECTION 15: SEL-351R RECLOSER CONTROL COMMAND SUMMARY Date Code 20020215 Table of Contents SEL-351R Instruction Manual...
Page 15: Table Of Contents
Primary Voltage Close Power ..................1-37 Installation With Separate 120 Vac Power and Three-Phase Voltage....... 1-38 120 Vac Close Power ....................1-38 Primary Voltage Close Power ..................1-38 Undervoltage Block for Frequency Elements ............1-38 Date Code 20020215 Factory-Set Logic SEL-351R Instruction Manual...
Page 16 Figure 1.7: Operations - Ground Fast Curve Logic................1-14 Figure 1.8: Operations to Lockout - Phase Logic ................1-15 Figure 1.9: Operations to Lockout - Ground Logic................1-16 Figure 1.10: Operations to Lockout - SEF Logic................... 1-16 Factory-Set Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 17 Figure 1.26: Block Reset Timing Logic....................1-30 Figure 1.27: Sequence Coordination Logic.................... 1-31 Figure 1.28: Phase Coordination of SEL-351Rs in Series ..............1-32 Figure 1.29: Operation of SEL-351R(1) Sequence Coordination Logic for Phase Fault Beyond Downstream SEL-351R(2)..................1-33 Figure 1.30: Reclose Supervision Logic ....................1-34 Figure 1.31: Installation With Only 120 Vac Power (traditional installation)........
Page 19: Factory-Set Logic
SET L n OGIC command) that makes the SEL-351R Recloser Control operate as a recloser control. Section 3: Overcurrent, Voltage, Synchronism Check, and Frequency Elements through Section 9: Setting the SEL-351R Recloser Control provide more settings information and settings variation details.
Page 20: Table 1.1: Correspondence Between Ez Settings And "Regular" Settings
Close power wait time 79CLSD Complex fast curve - phase (Y/N) Const. time adder - phase fast curve 51P1CT Vert. multiplier - phase fast curve 51P1TD Min. response - phase fast curve 51P1MR Factory-Set Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 21 Restore Min. trip - ground RPGR Restore Min. trip - SEF RPSEF Sequence coordination (Y/N) ESEQ Ground trip precedence (Y/N) PRECED Underfrequency loadshedding (Y/N) Underfrequency pickup 81D1P Underfrequency time delay 81D1D Demand meter time constant DMTC Date Code 20020215 Factory-Set Logic SEL-351R Instruction Manual...
Page 22: Overcurrent Element Functions Overview
KASP1, KASP2, KASP3 Reset trip-latched LEDs on close (Y,Y1,N,N1) RSTLED True three-phase voltage connected (Y/N) 3PVOLT Phantom voltages from (VA,VB,VC,VAB,VBC, PHANTV VCA,OFF) (SEL-351R-2 only) Battery Amp-hours AMPHR % Battery capacity for sleep SLPCAP Turn on the 12 V power (Y/N) ON12V...
Page 23: Residual Ground Vs. Neutral Ground
(see Tables 9.3 and 9.4). The associated overcurrent element settings listed in Table 1.2 and SEL control equations settings are found in the settings sheets at the end of Section 9: OGIC Setting the SEL-351R Recloser Control. The factory default SEL control equations OGIC settings are explained in the remainder of this section.
Page 24: Cold Load Pickup Scheme
(see Figure 13 in the Installation section in the SEL-351R Quick-Start Installation and User’s Guide). Phase current input channels IA, IB, and IC are rated 1A nominal. Current input channel IN is rated 0.05 A nominal.
Page 25: Start Loss Of Load Diversity Timer
SV6T propagates to the logic in Figure 1.2 through Figure 1.4 for phase, ground, and SEF overcurrent elements, respectively. The logic in these three figures operates similarly—let’s examine the operation of Figure 1.2 (phase). Date Code 20020215 Factory-Set Logic SEL-351R Instruction Manual...
Page 26: Actively Engage Cold Load Pickup Scheme (Phase Elements Example)
SV7PU (=900 cycles from factory) is the qualifiying time for cold load pickup phase current below normal Min. trip - phase DWG: M351R030 Figure 1.2: Cold Load Pickup Scheme Seal-In Logic for Phase Overcurrent Elements Factory-Set Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 27: Figure 1.3: Cold Load Pickup Scheme Seal-In Logic For Ground Overcurrent Elements
SV11PU (=900 cycles from factory) is the qualifying time for cold load pickup phase current below normal Min. trip - SEF DWG: M351R032 Figure 1.4: Cold Load Pickup Scheme Seal-in Logic for SEF Overcurrent Elements Date Code 20020215 Factory-Set Logic SEL-351R Instruction Manual...
Page 28: Use Overcurrent Element Torque Control Logic To Enable/Disable Or Desensitize Elements (Phase Elements Example)
Normal Min. cold load pickup scheme is trip - phase actively engaged for phase elements DWG: M351R086 Figure 1.5: Disable Lower Portion of Delay Curve - Phase for Cold Load Pickup 1-10 Factory-Set Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 29: Disengage Cold Load Pickup Scheme (Phase Elements Example)
Note the symmetry between Figure 1.6 and Figure 1.7. Relay Word bits SH0 through SH4 assert during different periods of a reclose cycle as the shot (reclose) counter increments. The shot counter increments just before each reclose. Date Code 20020215 Factory-Set Logic 1-11 SEL-351R Instruction Manual...
Page 30: Fast Curve Operation When Reclosing Is Defeated
Note: Table 1.3 presumes that five trip operations are set (four reclosures in between them). If the SEL-351R is set for fewer trip operations, the shot counter does not increment to the higher shots (e.g., the shot counter doesn’t increment to shot = 4 if only four trip operations are set).
Page 31: Figure 1.6: Operations - Phase Fast Curve Logic
Used in the torque control setting 51P1TC OGIC to enable/disable phase overcurrent element 51P1T (see Figure 1.15) OPPH = 4 DWG: M351R067 OPPH = 5 Figure 1.6: Operations - Phase Fast Curve Logic Date Code 20020215 Factory-Set Logic 1-13 SEL-351R Instruction Manual...
Page 32: Logic
Relay Word bit HTP to be asserted to logical 1 for all the following conditions: • shot = 2 (SH2 = logical 1) • shot = 3 (SH3 = logical 1) • shot = 4 (SH4 = logical 1) 1-14 Factory-Set Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 33: High Current Trip Operation When Reclosing Is Defeated
Used in the following settings to OGIC realize drive-to- lockout conditions: OPLKPH = 4 SV15 SV16 (see Figure 1.24) OPLKPH = 5 DWG: M351R057 Figure 1.8: Operations to Lockout - Phase Logic Date Code 20020215 Factory-Set Logic 1-15 SEL-351R Instruction Manual...
Page 34: Figure 1.9: Operations To Lockout - Ground Logic
Used in the following setting to OGIC realize a drive-to- lockout condition: OPLKSF = 4 79DTL (see Figure 1.25) OPLKSF = 5 DWG: M351R060 Figure 1.10: Operations to Lockout - SEF Logic 1-16 Factory-Set Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 35: Figure 1.11: Activate High Current Trip - Phase Logic
Used in the torque control setting 67P2TC OGIC to enable/disable phase overcurrent element HITRPH = 4 67P2T (see Figure 1.17) HITRPH = 5 DWG: M351R062 Figure 1.11: Activate High Current Trip - Phase Logic Date Code 20020215 Factory-Set Logic 1-17 SEL-351R Instruction Manual...
Page 36: Figure 1.12: Activate High Current Trip - Ground Logic
67G2TC to enable/ disable phase overcurrent HITRGR = 4 elements 67N2T (neutral) and 67G2T (residual), respectively (see Figure 1.17) HITRGR = 5 DWG: M351R063 Figure 1.12: Activate High Current Trip - Ground Logic 1-18 Factory-Set Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 37: Figure 1.13: Activate High Current Lockout - Phase Logic
67G1TC to enable/ disable ground overcurrent HILKGR = 4 elements 67N1 (neutral) and 67G1 (residual), respectively (see Figure 1.17) HILKGR = 5 DWG: M351R065 Figure 1.14: Activate High Current Lockout - Ground Logic Date Code 20020215 Factory-Set Logic 1-19 SEL-351R Instruction Manual...
Page 38: Overcurrent Element Enable/Disable Logic
51G1T logic 51G1TC (see Figure GROUND ENABLED 3.18) operator control ON (see Figure 1.41) DWG: M351R080 Figure 1.15: Fast Curve - Phase (top) and Fast Curve - Ground (bottom) Enable/Disable Logic 1-20 Factory-Set Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 39: Figure 1.16: Delay Curve - Phase (Top) And Delay Curve - Ground (Bottom) Enable/Disable Logic
GROUND ENABLED operator control ON (see Figure 1.41) Input into 67G1 logic 67G1TC (see Figure 3.10) DWG: M351R081 Figure 1.17: High Current Trip (top) and High Current Lockout (bottom) Enable/Disable Logic Date Code 20020215 Factory-Set Logic 1-21 SEL-351R Instruction Manual...
Page 40: Trip Logic
Figure 1.19 propagates into the trip logic (see Figure 5.1). The trip signal output (Relay Word bit TRIP) is then assigned to the HV FET trip output with SEL recloser control trip setting OGIC (see Figure 7.30): RCTR = TRIP 1-22 Factory-Set Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 41: Close Logic
(Relay Word bit LT4) or hot line tag (Relay Word bit LT7) are turned ON or OFF, no surprise close takes place—there is no standing close condition waiting to get through. Date Code 20020215 Factory-Set Logic 1-23 SEL-351R Instruction Manual...
Page 42: Unlatch Close Conditions
52b contact in the close circuit is open and the 52a in the trip circuit is closed (see Figure 7.30)—the recloser has made a complete mechanical changeover to the close position. 1-24 Factory-Set Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 43: Figure 1.21: Unlatch Close Conditions
Figure 1.20 through Figure 1.22 all propagate into the close logic (see Figure 6.1). The close signal output (Relay Word bit CLOSE) is then assigned to the HV FET close output with recloser control close setting (see Figure 7.30): OGIC RCCL = CLOSE Date Code 20020215 Factory-Set Logic 1-25 SEL-351R Instruction Manual...
Page 44: Drive-To-Lockout Logic
OLS) is used in the drive-to-lockout logic in Figure 1.24 and top of Figure 1.25. The SEL-351R is driven to lockout if all the following are true: • The number of trip operations is greater than or equal to setting Operations to lockout - ground (Relay Word bit OLG asserted to logical 1) •...
Page 45: High Current Lockout
Otherwise, 67G1 operates as the High current lockout - ground element (67N1 is turned off automatically). Other Drive-to-Lockout Conditions The SEL-351R is driven to lockout if a trip operation occurs or the recloser opens while either one of the following is true: • RECLOSE ENABLED operator control OFF •...
Page 46 51N1T (any 51N2T overcurrent trip, except 67P2T SEF) 67G2T 67N2T 50G6 50N6 SV14 51N1 (ground current above 51N2 min. trip - ground) DWG: M351R023 Figure 1.23: Drive-to-Lockout Logic—Part 1 of 3 1-28 Factory-Set Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 47 - ground and SV16 set operations to lockout - phase (drive-to- lockout conditions derived from operations to lockout DWG: M351R024 conditions) Figure 1.24: Drive-to-Lockout Logic—Part 2 of 3 Date Code 20020215 Factory-Set Logic 1-29 SEL-351R Instruction Manual...
Page 48: Block Reset Timing
51P2 delay curve, or SEF 51G1 OGIC element is picked up Setting 51G2 79BRS 51N1 (block reset 51N2 timing) 67N3 TRIP DWG: M351R029 Figure 1.26: Block Reset Timing Logic 1-30 Factory-Set Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 49: Sequence Coordination
- phase (51P1T) via torque control setting 51P1TC. Once shot counter = 2, Fast curve - phase is disabled. Then when downstream SEL-351R(2) is operating on Delay curve - phase, the SEL-351R(1) Fast curves are out of the way—the SEL-351R(1) does not overtrip for a fault beyond SEL-351R(2).
Page 50: Figure 1.28: Phase Coordination Of Sel-351Rs In Series
Delay curve - phase [SEL-351R(1)] Delay curve - phase [SEL-351R(2)] Fast curve - phase [51P1T; (SEL-351R(1)] Fast curve - phase [SEL-351R(2)] 51P1 DWG: M351R089 Figure 1.28: Phase Coordination of SEL-351Rs in Series 1-32 Factory-Set Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 51: Reclose Supervision Logic
UPERVISION OGIC See Figure 1.30. After a reclose interval times out, a final check is made of the reclose supervision logic before the SEL-351R auto-recloses the recloser. For auto-reclosing to proceed, both following conditions must be met: • Healthy battery •...
Page 52: Figure 1.30: Reclose Supervision Logic
The following Figure 1.31 through Figure 1.34 detail various scenarios for connecting the SEL-351R to the recloser, 120 Vac power, and power system voltages. The installation in each figure is discussed from the point of view of both close power scenarios (120 Vac or primary voltage).
Page 53: Front-Panel Ac Supply Led
• 24 Vdc battery (pins 6, 2 on POWER connector J6) If neither one of these power sources is available, then the SEL-351R relay module is dead and the AC SUPPLY LED is extinguished anyway. The AC SUPPLY LED may flicker at times when tripping or closing, due to the battery momentarily discharging a bit.
Page 54: 120 Vac Close Power
120 Vac Close Power (if recloser is equipped) Control Cable (120 Vac Power) SEL-351R 120 Vac Power DWG: M351R092 Figure 1.33: Installation With Separate 120 Vac Power, Three-Phase, and Synchronism Check Voltage 1-36 Factory-Set Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 55: Primary Voltage Close Power
B and C and the 120 Vac power to the SEL-351R comes from phase A. Though if phase A is energized, phases B and C most likely are energized, too).
Page 56: Installation With Separate 120 Vac Power And Three-Phase Voltage
No meaningful changes can be made in the close power part of the factory-set logic in Figure 1.30 (79CLS = 59A1 * …)—only single-phase 120 Vac power is brought to the SEL-351R. Voltage element 59A1 picks up when nominal 120 Vac is applied to voltage input Installation With Separate 120 Vac Power and Three-Phase Voltage See Figure 1.32.
Page 57: 120 Vac Close Power
Installation With Only Three-Phase Voltage (120 Vac Power Provided by Three-Phase Voltage) See Figure 1.34. Only three-phase voltage is brought to the SEL-351R. The jumper from the 120 Vac power bus to voltage input VA is factory-installed (see also Figure 7 and Figure 11 in the Installation section in the SEL-351R Quick-Start Installation and User’s Guide).
Page 58: 120 Vac Close Power
PERATOR ONTROL OGIC See Operator Controls subsection in the Front-Panel Interface section in the SEL-351R Quick- Start Installation and User’s Guide for an explanation of the factory-set operation for the operator controls. See Figure 1.35 and Figure 1.36. The operator controls (except WAKE UP) are programmable.
Page 59: Detailed Operator Control Pushbutton Output
Figure 1.35 and Figure 1.36 list corresponding figures that detail operator control pushbutton output and corresponding LED operation and logic operation. Note that the pushbutton output (e.g., Relay Word bit PB1 for the GROUND ENABLED operator control pushbutton) Date Code 20020215 Factory-Set Logic 1-41 SEL-351R Instruction Manual...
Page 60: Ground Enabled Operator Control Pushbutton Output
Figure 1.38 describes the output of the unique LOCK operator control pushbutton. Note the need to press the LOCK operator control pushbutton continually for three seconds until Relay Word bit PB5 asserts to logical 1 for one processing interval. 1-42 Factory-Set Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 61: Trip And Close Operator Control Pushbutton Outputs
Figure 1.39 and Figure 1.40, whereby a pending close can be turned off by pressing the TRIP pushbutton and a pending trip can be turned off by pressing the CLOSE pushbutton. Date Code 20020215 Factory-Set Logic 1-43 SEL-351R Instruction Manual...
Page 62 (and LED flashes), as described in Figure 1.39 and Figure 1.40. If the control cable is removed from the bottom of the SEL-351R, both RECLOSER CLOSED and RECLOSER OPEN LEDs extinguish, even if the recloser is open. This occurs even for the RECLOSER OPEN LED because of SEL setting LED9 = !52A * PINBD.
Page 63: Figure 1.39: Close Operator Control Pushbutton Output
If time delay setting PB8D is set PB8D=0 (no time delay), then Relay Word bit PB8 functions in a manner similar to Figure 1.37. DWG: M351R074 Figure 1.39: CLOSE Operator Control Pushbutton Output Date Code 20020215 Factory-Set Logic 1-45 SEL-351R Instruction Manual...
Page 64: Corresponding Operator Control Leds And Logic Applications
GROUND ENABLED operator control. The LOCK operator control has to be OFF (LT4 = logical 1) in order for the GROUND ENABLED operator control to effectively function—so that Relay Word bit PB1 can propagate on to latch LT1. 1-46 Factory-Set Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 65: Other Operator Controls
• Momentarily press the GROUND ENABLED operator control pushbutton again and LT1 resets to logical 0 All latches (LT1 through LT8) are nonvolatile (retain their state if the SEL-351R is powered down and then powered up again). The latch output (Relay Word bit LT1) propagates to the following logic: •...
Page 66: Reclose Enabled Operator Control
OFF (see Figure 1.50) SELogic settings to realize the desired hierarchy in local/remote control. See Figure 1.44) DWG: M351R058 Figure 1.43: REMOTE ENABLED Operator Control Logic Application 1-48 Factory-Set Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 67: Example Application For The Remote Enabled Operator Control
SEL OGIC LOCK operator control settings to realize the OFF (see Figure 1.50) desired auxiliary control. (See Figure 1.48.) DWG: M351R066 Figure 1.45: AUX 1 Operator Control Logic Application Date Code 20020215 Factory-Set Logic 1-49 SEL-351R Instruction Manual...
Page 68: Example Application For The Aux 1 Operator Control (Hot Line Tag)
AUX 1 operator control pushbutton output to hot line tag logic. A set hot line tag disables all closing or auto-reclosing from the SEL-351R. Figure 1.47 shows the factory-set hot line tag logic. From the factory, latch LT7 is set such that latch output LT7 is always asserted (Relay Word bit LT7 = logical 1)—the hot line tag is reset...
Page 69: Figure 1.47: Hot Line Tag Logic
ULCL (unlatch close), and 79DTL (drive-to-lockout) settings. (See OGIC Figures 1.20, 1.21, and 1.25.) DWG: M351R072 Figure 1.48: Example AUX 1 Operator Control Application (local control of hot line tag) Date Code 20020215 Factory-Set Logic 1-51 SEL-351R Instruction Manual...
Page 70: Alternate Settings Operator Control
1 or setting group 2, respectively. See Multiple Settings Groups subsection in Section 7: Inputs, Outputs, Timers, and Other Control Logic. The active setting group designation is nonvolatile (retained if the SEL-351R is powered down and then powered up again, i.e., returns to the same active setting group).
Page 71: Figure 1.50: Lock Operator Control Led And Logic Application
• Press the LOCK operator control pushbutton (for 3 seconds as described in Figure 1.38) again and LT4 resets to logical 0 All latches (LT1 through LT8) are nonvolatile (retain their state if the SEL-351R is powered down and then powered up again). The latch output (Relay Word bit LT4) propagates to the following logic: •...
Page 72: Front-Panel Status And Trip Target Leds
- see Figure 1.47) Trip Latch LED11L = N LED12L = N LED13L = N LED (Y/N)? CONTROL BATTERY HOT LINE ENABLED SUPPLY PROBLEM Fixed-Function DWG: M351R018-R1 Figure 1.51: Front-Panel Status LEDs 1-54 Factory-Set Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 73: Figure 1.52: Front-Panel Trip Target Leds
+ 51N1 + 51N2 LED25 = 67N3T Trip Latch LED (Y/N)? LED24L = Y LED25L = Y FAULT TYPE Fixed-Function, Trip-Latched LEDs DWG: M351R021 Figure 1.54: Front-Panel Fault-Type Trip Target LEDs Date Code 20020215 Factory-Set Logic 1-55 SEL-351R Instruction Manual...
Page 75 Table 2.5: Password and Breaker Jumper Operation................2-3 Table 2.6: EIA-232 Serial Port Voltage Jumper Positions for Standard Relay Shipments ..... 2-4 FIGURES Figure 2.1: SEL-351R Relay Module Inputs, Outputs, and Communications Ports....... 2-1 Date Code 20020215 Additional Installation Details...
Page 77: Additional Installation Details
Figure 2.1: SEL-351R Relay Module Inputs, Outputs, and Communications Ports NTRODUCTION This section describes additional SEL-351R Recloser Control installation details not covered in the Installation section of the SEL-351R Quick-Start Installation and User’s Guide. Refer also to Figure 19 in the guide. Date Code 20020215...
Page 78: Output Contact Jumpers
ONTROL UMPER The SEL-351R has a dedicated alarm output contact (labeled ALARM—see Figure 2.1). Often more than one alarm output contact is needed for such applications as local or remote annunciation, backup schemes, etc. An extra alarm output contact can be had without the addition of any external hardware.
Page 79: Password And Breaker Jumpers
ALARM output contact), it will be in the opposite state of the dedicated ALARM output contact in a standard relay shipment. In a standard SEL-351R shipment, the dedicated ALARM output contact comes as a “b” type output contact and all the other output contacts (including the “extra alarm”) come as “a”...
Page 80: Serial Port Voltage Jumpers
Section 10: Serial Port Communications and Commands for EIA 232 serial port pin functions. In a standard SEL-351R shipment, the jumpers are “OFF” (removed/not in place) so that the +5 Vdc is not connected to Pin 1 on the corresponding EIA-232 serial ports. Put the jumpers “ON”...
Page 81: Voltage Connections
Reassemble the relay as described in the same subsection. Set the relay date and time via serial communications port or front panel (see the Communications section or Front-Panel Interface section of the SEL-351R Quick-Start Installation and User’s Guide, respectively).
Page 83 Reset Timing Details (51P1T element example) ............3-22 Setting 51P1RS = Y.................... 3-22 Setting 51P1RS = N.................... 3-22 Neutral Ground Time-Overcurrent Elements ..............3-23 Settings Ranges ......................3-24 Date Code 20020215 Overcurrent, Voltage, Synchronism Check, and Frequency Elements SEL-351R Instruction Manual...
Page 84 Frequency Element Operation.................... 3-48 Overfrequency Element Operation................3-48 Underfrequency Element Operation................3-49 Frequency Element Voltage Control................3-49 Other Uses for Undervoltage Element 27B81............ 3-49 Frequency Element Uses....................3-49 Overcurrent, Voltage, Synchronism Check, and Frequency Elements Date Code 20020215 SEL-351R Instruction Manual...
Page 85 Figure 3.3: Levels 1 Through 4 Phase Instantaneous/Definite-Time Overcurrent Elements (with Directional Control Option) ..................3-4 Figure 3.4: Combined Single-Phase Instantaneous Overcurrent Elements ........... 3-6 Figure 3.5: SEL-351R Recloser Control Nondirectional Instantaneous Overcurrent Element Pickup Time Curve......................3-7 Figure 3.6: SEL-351R Recloser Control Nondirectional Instantaneous Overcurrent Element Reset Time Curve ......................
Page 86 < f shown as reference in this example) ..............3-41 Figure 3.27: Undervoltage Block for Frequency Elements..............3-45 Figure 3.28: Levels 1 Through 6 Frequency Elements ................3-46 Overcurrent, Voltage, Synchronism Check, and Frequency Elements Date Code 20020215 SEL-351R Instruction Manual...
Page 87: Overcurrent, Voltage, Synchronism Check, And Frequency Elements
OVERCURRENT, VOLTAGE, SYNCHRONISM CHECK, AND FREQUENCY ELEMENTS Many of the elements described in this section are used in the factory-set logic for the SEL-351R Recloser Control. Refer to Table 1.1 in Section 1: Factory-Set Logic for the correlation between the EZ settings that drive this factory-set logic and the “regular” settings that set many of the elements in this section.
Page 88 Figure 3.1: Levels 1 Through 4 Phase Instantaneous Overcurrent Elements Overcurrent, Voltage, Synchronism Check, and Frequency Elements Date Code 20020215 SEL-351R Instruction Manual...
Page 89: Pickup Operation
Ideally, set 50P1P > 50P2P > 50P3P > 50P4P so that instantaneous overcurrent elements 67P1 through 67P4 will display in an organized fashion in event reports (see Figure 3.3 and Table 12.3). Date Code 20020215 Overcurrent, Voltage, Synchronism Check, and Frequency Elements SEL-351R Instruction Manual...
Page 90 Figure 3.3: Levels 1 Through 4 Phase Instantaneous/Definite-Time Overcurrent Elements (with Directional Control Option) Overcurrent, Voltage, Synchronism Check, and Frequency Elements Date Code 20020215 SEL-351R Instruction Manual...
Page 91: Directional Control Option
1 (e.g., 67P3TC = 1) for the factory default settings. See SHO Command (Show/View Settings) in Section 10: Serial Port Communications and Commands for a list of the factory default settings. Date Code 20020215 Overcurrent, Voltage, Synchronism Check, and Frequency Elements SEL-351R Instruction Manual...
Page 92: Combined Single-Phase Instantaneous Overcurrent Elements
Figure 3.5 and Figure 3.6 show pickup and reset time curves applicable to all nondirectional instantaneous overcurrent elements in the SEL-351R (60 Hz or 50 Hz relays). These times do not include output contact operating time and, thus, are accurate for determining element operation time for use in internal SEL control equations.
Page 93: Phase-To-Phase Instantaneous Overcurrent Elements
≤ 4: add 0.25 cycle multiples of pickup setting > 4: add 0.50 cycle Maximum Minimum Applied Current (Multiples of Pickup Setting) Figure 3.5: SEL-351R Recloser Control Nondirectional Instantaneous Overcurrent Element Pickup Time Curve Maximum Minimum Applied Current (Multiples of Pickup Setting) Figure 3.6: SEL-351R Recloser Control Nondirectional Instantaneous Overcurrent...
Page 94: Setting Range
Figure 3.1, Figure 3.2, and Figure 3.3 in the preceding Phase Instantaneous/Definite-Time Overcurrent Elements subsection, substituting current I (channel IN current) for phase currents and substituting like settings and Relay Word bits. Overcurrent, Voltage, Synchronism Check, and Frequency Elements Date Code 20020215 SEL-351R Instruction Manual...
Page 95 Figure 3.7: Levels 1 through 4 Phase-to-Phase Instantaneous Overcurrent Elements Date Code 20020215 Overcurrent, Voltage, Synchronism Check, and Frequency Elements SEL-351R Instruction Manual...
Page 96 Figure 3.8: Levels 1 through 4 Neutral Ground Instantaneous/Definite-Time Overcurrent Elements (with Directional Control Option) 3-10 Overcurrent, Voltage, Synchronism Check, and Frequency Elements Date Code 20020215 SEL-351R Instruction Manual...
Page 97: Settings Ranges
Pickup: ±1 mA secondary and ±5% of setting (0.05 A nominal channel IN current input) Timer: ±0.25 cycles and ±0.1% of setting Transient Overreach: ±5% of setting Pickup and Reset Time Curves See Figure 3.5 and Figure 3.6. Date Code 20020215 Overcurrent, Voltage, Synchronism Check, and Frequency Elements 3-11 SEL-351R Instruction Manual...
Page 98: Residual Ground Instantaneous/Definite-Time Overcurrent Elements
The different levels are enabled with the E50G enable setting, as shown in Figure 3.10 and Figure 3.11. Figure 3.10: Levels 1 through 4 Residual Ground Instantaneous/Definite-Time Overcurrent Elements (with Directional Control Option) 3-12 Overcurrent, Voltage, Synchronism Check, and Frequency Elements Date Code 20020215 SEL-351R Instruction Manual...
Page 99: Settings Ranges
Pickup: ±0.01 A secondary and ±3% of setting (1 A nominal phase current inputs, IA, IB, IC) Timer: ±0.25 cycles and ±0.1% of setting Transient Overreach: ±5% of setting Pickup and Reset Time Curves See Figure 3.5 and Figure 3.6. Date Code 20020215 Overcurrent, Voltage, Synchronism Check, and Frequency Elements 3-13 SEL-351R Instruction Manual...
Page 100: Negative-Sequence Instantaneous/Definite-Time Overcurrent Elements
Pickup: ±0.01 A secondary and ±3% of setting (1 A nominal phase current inputs, IA, IB, IC) Timer: ±0.25 cycles and ±0.1% of setting Transient Overreach: ±5% of setting Pickup and Reset Time Curves See Figure 3.5 and Figure 3.6. 3-14 Overcurrent, Voltage, Synchronism Check, and Frequency Elements Date Code 20020215 SEL-351R Instruction Manual...
Page 101 Figure 3.12: Levels 1 Through 4 Negative-Sequence Instantaneous/Definite-Time Overcurrent Elements (with Directional Control Option) Date Code 20020215 Overcurrent, Voltage, Synchronism Check, and Frequency Elements 3-15 SEL-351R Instruction Manual...
Page 102: Time-Overcurrent Elements
Besides the settings involved with the Torque Control Switch operation in Figure 3.14 and Figure 3.15, the 51P1T and 51P2T phase time-overcurrent elements have the following settings: 3-16 Overcurrent, Voltage, Synchronism Check, and Frequency Elements Date Code 20020215 SEL-351R Instruction Manual...
Page 103 Note: SEL control equation torque control settings (e.g., 51P1TC) cannot be set directly to OGIC logical 0. See Section 9: Setting the SEL-351R Recloser Control for additional time-overcurrent element setting information. Date Code 20020215 Overcurrent, Voltage, Synchronism Check, and Frequency Elements...
Page 104 Figure 3.14: Phase Time-Overcurrent Element 51P1T (with Directional Control Option) Figure 3.15: Phase Time-Overcurrent Element 51P2T (with Directional Control Option) 3-18 Overcurrent, Voltage, Synchronism Check, and Frequency Elements Date Code 20020215 SEL-351R Instruction Manual...
Page 105: Accuracy
> pickup setting 51P1P and the phase time-overcurrent element is timing, but not yet timed out on its curve ≤ pickup setting 51P1P = 0 (logical 0), if I Date Code 20020215 Overcurrent, Voltage, Synchronism Check, and Frequency Elements 3-19 SEL-351R Instruction Manual...
Page 106: Torque Control Switch Open
, effectively appears as a magnitude of zero (0) to the pickup comparator and the curve timing/reset timing function. Directional Control Option Refer to Figure 3.14. 3-20 Overcurrent, Voltage, Synchronism Check, and Frequency Elements Date Code 20020215 SEL-351R Instruction Manual...
Page 107: Torque Control
If directional control enable setting E32 = N, then logic point TCP1 = logical 1 and, thus, the Torque Control Switch closes and phase time-overcurrent element 51P1T is enabled and nondirectional. Date Code 20020215 Overcurrent, Voltage, Synchronism Check, and Frequency Elements 3-21 SEL-351R Instruction Manual...
Page 108: Reset Timing Details (51P1T Element Example)
51P1P, there is a 1-cycle delay before the element fully resets. Relay word bit 51P1R (reset indication) = logical 1 when the element is fully reset. 3-22 Overcurrent, Voltage, Synchronism Check, and Frequency Elements Date Code 20020215 SEL-351R Instruction Manual...
Page 109: Neutral Ground Time-Overcurrent Elements
Neutral Ground Time-Overcurrent Elements Figure 3.16: Neutral Ground Time-Overcurrent Element 51N1T (with Directional Control Option) Figure 3.17: Neutral Ground Time-Overcurrent Element 51N2T (with Directional Control Option) Date Code 20020215 Overcurrent, Voltage, Synchronism Check, and Frequency Elements 3-23 SEL-351R Instruction Manual...
Page 110: Settings Ranges
OGIC (i.e., 51N1TC = 0), then corresponding neutral ground time-overcurrent element 51N1T is defeated and nonoperational, regardless of any other setting. 51N2T is similar. See Section 9: Setting the SEL-351R Recloser Control for additional time-overcurrent element setting information. Accuracy Pickup: ±1 mA secondary and ±5% of setting (0.05 A nominal channel IN current input) Curve Timing: ±1.50 cycles and ±4% of curve time for currents between (and including) 2...
Page 111: Residual Ground Time-Overcurrent Elements
Relay Word bits. Figure 3.18: Residual Ground Time-Overcurrent Element 51G1T (with Directional Control Option) Figure 3.19: Residual Ground Time-Overcurrent Element 51G2T (with Directional Control Option) Date Code 20020215 Overcurrent, Voltage, Synchronism Check, and Frequency Elements 3-25 SEL-351R Instruction Manual...
Page 112: Settings Ranges
OGIC (i.e., 51G1TC = 0), then corresponding residual ground time-overcurrent element 51G1T is defeated and nonoperational, regardless of any other setting. 51G2T is similar. See Section 9: Setting the SEL-351R Recloser Control for additional time-overcurrent element setting information. Accuracy Pickup: ±0.01 A secondary and ±3% of setting (1 A nominal phase current inputs, IA, IB, IC) Curve Timing: ±1.50 cycles and ±4% of curve time for currents between (and including) 2...
Page 113: Negative-Sequence Time-Overcurrent Element
(ACB rotation), where a = 1 ∠ 120° and a = 1 ∠ -120°] for maximum phase current I and like settings and Relay Word bits. Date Code 20020215 Overcurrent, Voltage, Synchronism Check, and Frequency Elements 3-27 SEL-351R Instruction Manual...
Page 114: Settings Ranges
OGIC (i.e., 51QTC = 0), then corresponding negative-sequence time-overcurrent element 51QT is defeated and nonoperational, regardless of any other setting. See Section 9: Setting the SEL-351R Recloser Control for additional time-overcurrent element setting information. Accuracy Pickup: ±0.01 A secondary and ±3% of setting (1 A nominal phase current inputs, IA, IB, IC) Curve Timing: ±1.50 cycles and ±4% of curve time for currents between (and including) 2...
Page 115: Voltage Elements
Phase-to-phase voltage Zero-sequence voltage Negative-sequence voltage Positive-sequence voltage Synchronism check voltage, from SEL-351R rear-panel voltage input VS* * Voltage V is used in the synchronism check elements described in the following subsection Synchronism Check Elements. Voltage V is also used in the three voltage elements described at the end of Table 3.8 and Figure 3.26.
Page 116: Voltage
0.0–300.0 V secondary 59QP 0.0–200.0 V secondary 59V1 59V1P 0.0–300.0 V secondary 27SP Figure 3.23 0.0–300.0 V secondary 59S1 59S1P 0.0–300.0 V secondary 59S2 59S2P 0.0–300.0 V secondary 3-30 Overcurrent, Voltage, Synchronism Check, and Frequency Elements Date Code 20020215 SEL-351R Instruction Manual...
Page 117 Figure 3.21: Single-Phase and Three-Phase Voltage Elements Date Code 20020215 Overcurrent, Voltage, Synchronism Check, and Frequency Elements 3-31 SEL-351R Instruction Manual...
Page 118 Figure 3.22: Phase-to-Phase and Sequence Voltage Elements 3-32 Overcurrent, Voltage, Synchronism Check, and Frequency Elements Date Code 20020215 SEL-351R Instruction Manual...
Page 119: Accuracy
(27A1 = 1, 27B1 = 1, and 27C1 = 1) = 0 (logical 0), if at least one of the Relay Word bits 27A1, 27B1, or 27C1 is deasserted (e.g., 27A1 = 0) Date Code 20020215 Overcurrent, Voltage, Synchronism Check, and Frequency Elements 3-33 SEL-351R Instruction Manual...
Page 120: Overvoltage Element Operation Example
If the voltages are static (voltages not slipping with respect to one another), the two synchronism check elements operate as shown in the top of Figure 3.25. The angle settings are checked for synchronism check closing. 3-34 Overcurrent, Voltage, Synchronism Check, and Frequency Elements Date Code 20020215 SEL-351R Instruction Manual...
Page 121: Voltage Input Vs Connected Phase-To-Phase Or Beyond Delta-Wye Transformer
VA always has to be connected to determine system frequency on one side of the circuit breaker (to determine the slip between V and V ). V always has to meet the Date Code 20020215 Overcurrent, Voltage, Synchronism Check, and Frequency Elements 3-35 SEL-351R Instruction Manual...
Page 122: Accuracy
(0, 30, …, 300, or 330 degrees) referenced to V . See Application Guide entitled Compensate for Constant Phase Angle Difference in Synchronism Check with the SEL-351R Recloser Control for more information on setting SYNCP with an angle setting.
Page 123 Figure 3.25: Synchronism Check Elements Date Code 20020215 Overcurrent, Voltage, Synchronism Check, and Frequency Elements 3-37 SEL-351R Instruction Manual...
Page 124: Synchronism Check Elements Voltage Inputs
, or V ), designated by setting SYNCP (e.g., if SYNCP = VB, then V Synchronism check voltage, from SEL-351R rear-panel voltage input VS For example, if V is designated as phase input voltage V (setting SYNCP = VB), then rear- panel voltage input VS is connected to B-phase on the other side of the circuit breaker.
Page 125: Synchronism Check Elements Operation
Check with the SEL-351R Recloser Control for more information on setting SYNCP with an angle setting. Synchronism Check Elements Operation Refer to Figure 3.24 and Figure 3.25. Voltage Window Refer to Figure 3.24. Single-phase voltage inputs V and V are compared to a voltage window, to verify that the voltages are “healthy”...
Page 126: Slip Frequency Calculator
V and V are “static” (not “slipping” with respect to one another). This would usually be the case for an open breaker with voltages 3-40 Overcurrent, Voltage, Synchronism Check, and Frequency Elements Date Code 20020215 SEL-351R Instruction Manual...
Page 127: Voltages V And V Are "Slipping
TCLOSD Angle Difference DWG: M35177 Figure 3.26: Angle Difference Between V and V Compensated by Breaker Close Time < f shown as reference in this example) Date Code 20020215 Overcurrent, Voltage, Synchronism Check, and Frequency Elements 3-41 SEL-351R Instruction Manual...
Page 128: Angle Difference Example
Synchronism Check Element Outputs Synchronism check element outputs (Relay Word bits 25A1 and 25A2 in Figure 3.25) assert to logical 1 for the conditions explained in the following text. 3-42 Overcurrent, Voltage, Synchronism Check, and Frequency Elements Date Code 20020215 SEL-351R Instruction Manual...
Page 129: Voltages V
Supervision) is checked only once to see if it is asserted to logical 1. If it is not asserted to logical 1, the relay goes to the Lockout State. Date Code 20020215 Overcurrent, Voltage, Synchronism Check, and Frequency Elements 3-43 SEL-351R Instruction Manual...
Page 130: Synchronism Check Applications For Automatic Reclosing And Manual Closing
(25 degrees) than for an automatic reclose (15 degrees). A single output contact (e.g., OUT102 = CLOSE) can provide the close function for both automatic reclosing and manual closing (see Figure 6.1 logic output). 3-44 Overcurrent, Voltage, Synchronism Check, and Frequency Elements Date Code 20020215 SEL-351R Instruction Manual...
Page 131: Frequency Elements
EZ settings (see Figure 1.19 in Section 1: Factory-Set Logic in this manual and the Underfrequency loadshedding setting in Table 10 and subsection Settings Descriptions in the Settings section in the SEL-351R Quick-Start Installation and User’s Guide). For various connections, Figure 1.31 through Figure 1.34 and associated text in subsection Reclose Supervision Logic in Section 1: Factory-Set Logic discuss possible changes necessary to the factory default undervoltage block setting 27B81P (see Figure 3.27 and Table 3.10).
Page 132 Figure 3.28: Levels 1 Through 6 Frequency Elements 3-46 Overcurrent, Voltage, Synchronism Check, and Frequency Elements Date Code 20020215 SEL-351R Instruction Manual...
Page 133: Accuracy
Note that pickup settings 81D1P through 81D6P are compared to setting NFREQ. NFREQ is the nominal frequency setting (a global setting), set to 50 or 60 Hz. Date Code 20020215 Overcurrent, Voltage, Synchronism Check, and Frequency Elements 3-47 SEL-351R Instruction Manual...
Page 134: Overfrequency Element
81D1 = logical 1 (instantaneous element) 81D1T = logical 1 (time delayed element) Relay Word bit 81D1T asserts to logical 1 only after time delay 81D1D. 3-48 Overcurrent, Voltage, Synchronism Check, and Frequency Elements Date Code 20020215 SEL-351R Instruction Manual...
Page 135: Underfrequency Element Operation
The instantaneous frequency elements (81D1 through 81D6) are used in testing only. The time-delayed frequency elements (81D1T through 81D6T) are used for underfrequency load shedding, frequency restoration, and other schemes. Date Code 20020215 Overcurrent, Voltage, Synchronism Check, and Frequency Elements 3-49 SEL-351R Instruction Manual...
Page 137 Convert Power Factors to Equivalent Load Angles............. 4-5 Apply Load-Encroachment Logic to a Phase Time-Overcurrent......... 4-5 Use SEL-321 Relay Application Guide for the SEL-351R Recloser Control ..... 4-7 Directional Control for Neutral Ground and Residual Ground Overcurrent Elements ....4-7 Internal Enables........................
Page 138 Overcurrent Elements....................4-20 Figure 4.17: Negative-Sequence Voltage-Polarized Directional Element for Negative-Sequence and Phase Overcurrent Elements................. 4-23 Figure 4.18: Positive-Sequence Voltage-Polarized Directional Element for Phase Overcurrent Elements ........................4-24 Loss-of-Potential, Load Encroachment, and Directional Element Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 139 Figure 4.19: Routing of Directional Elements to Negative-Sequence and Phase Overcurrent Elements ........................4-25 Figure 4.20: Direction Forward/Reverse Logic for Negative-Sequence Overcurrent Elements ... 4-25 Figure 4.21: Direction Forward/Reverse Logic for Phase Overcurrent Elements ......... 4-26 Date Code 20020215 Loss-of-Potential, Load Encroachment, and Directional Element Logic SEL-351R Instruction Manual...
Page 141: Loss-Of-Potential, Load Encroachment, And Directional Element Logic
3PVOLT = Y). Even if the LOP logic is not used (i.e., no directional overcurrent elements are used), setting 3PVOLT = Y should still be made (SET G command) if true three-phase voltage is connected to the SEL-351R. Loss-of-potential is declared (Relay Word bit LOP = logical 1) when a 10 percent drop in V...
Page 142: Setting Elop = Y Or Y1
This runs the risk of tripping on bus load current. The load-encroachment feature prevents this from happening, as shown in the example that follows in this subsection. Loss-of-Potential, Load Encroachment, and Directional Element Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 143 ZLIN asserts to logical 1 when the load lies within this hatched region. Relay Word bit ZLOAD is the OR-combination of ZLOUT and ZLIN: ZLOAD = ZLOUT + ZLIN Date Code 20020215 Loss-of-Potential, Load Encroachment, and Directional Element Logic SEL-351R Instruction Manual...
Page 144: Settings Ranges
132800 V primary • (1/PT ratio) = 132800 V primary • (1 V secondary/2000 V primary) = 66.4 V secondary Now, calculate the equivalent secondary impedance: 66.4 V secondary/5.03 A secondary = 13.2 Ω secondary Loss-of-Potential, Load Encroachment, and Directional Element Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 145: Convert Power Factors To Equivalent Load Angles
If a fault occurs, the apparent positive-sequence impedance moves outside the ZLOUT area (and stays outside the ZLIN area, too), resulting in: ZLOAD = ZLOUT + ZLIN = logical 0 + logical 0 = logical 0 Date Code 20020215 Loss-of-Potential, Load Encroachment, and Directional Element Logic SEL-351R Instruction Manual...
Page 146 51P1T (51P1T loses its sensitivity when an LOP condition occurs): 51P1TC = !ZLOAD*!LOP + 50P6 = !ZLOAD*NOT[LOP] + 50P6 = !ZLOAD*NOT[logical 1] + 50P6 = 50P6 Loss-of-Potential, Load Encroachment, and Directional Element Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 147: Use Sel-321 Relay Application Guide For The Sel-351R Recloser Control
Encroachment Function Setting Guidelines) for applying the load-encroachment logic in the SEL-351R. Note that Application Guide AG93-10 discusses applying the load-encroachment feature to phase distance elements in the SEL-321 Relay. Although the SEL-351R does not have phase distance elements, the principles and settings example in this guide are still applicable.
Page 148: Internal Enables
If V is in the setting ORDER, and no other internal enable is asserted, 32NE may be asserted as shown in Figure 4.7. Neutral current will then be used in determining fault direction. Loss-of-Potential, Load Encroachment, and Directional Element Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 149: Directional Elements
ELOP = Y. Refer to Figure 4.1 and accompanying text for more information on loss-of-potential. Date Code 20020215 Loss-of-Potential, Load Encroachment, and Directional Element Logic SEL-351R Instruction Manual...
Page 150 Subsection Directional Control Provided by Torque Control Settings at the end of this section describes how to avoid this limitation for special cases. 4-10 Loss-of-Potential, Load Encroachment, and Directional Element Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 151 Figure 4.5: Internal Enables (32QE and 32QGE) Logic for Negative-Sequence Voltage-Polarized Directional Elements Date Code 20020215 Loss-of-Potential, Load Encroachment, and Directional Element Logic 4-11 SEL-351R Instruction Manual...
Page 152 ORDER OGIC Setting enable OGIC E32IV Relay Word Bits 32QGE 32VE DWG: M351R152 Figure 4.7: Internal Enable (32NE) for Zero-Sequence Voltage-Polarized, Neutral- Current Directional Element 4-12 Loss-of-Potential, Load Encroachment, and Directional Element Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 153 Figure 4.8: Best Choice Ground Directional Logic Date Code 20020215 Loss-of-Potential, Load Encroachment, and Directional Element Logic 4-13 SEL-351R Instruction Manual...
Page 154 Figure 4.9: Negative-Sequence Voltage-Polarized Directional Element for Neutral and Residual Overcurrent Elements 4-14 Loss-of-Potential, Load Encroachment, and Directional Element Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 155 Figure 4.10: Zero-Sequence Voltage-Polarized, Residual-Current Directional Element for Neutral and Residual Overcurrent Elements Date Code 20020215 Loss-of-Potential, Load Encroachment, and Directional Element Logic 4-15 SEL-351R Instruction Manual...
Page 156 If Z0R Setting < 0, Reverse Threshold = 1.25 • Z0R + 0.25 DWG: M351R155 Note: 1 ∠Z0L = One OHM At The Zero-Sequence Line Angle Figure 4.11: Zero-Sequence Voltage-Polarized, Neutral-Current Directional Elements for Neutral Ground Overcurrent Elements 4-16 Loss-of-Potential, Load Encroachment, and Directional Element Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 157 Figure 4.12: Routing of Directional Elements to Residual Overcurrent Elements Figure 4.13: Routing of Directional Elements to Neutral Ground Overcurrent Elements Date Code 20020215 Loss-of-Potential, Load Encroachment, and Directional Element Logic 4-17 SEL-351R Instruction Manual...
Page 158 Figure 4.14: Direction Forward/Reverse Logic for Residual Ground Overcurrent Elements 4-18 Loss-of-Potential, Load Encroachment, and Directional Element Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 159 Figure 4.17 gives an overview of how the negative-sequence voltage-polarized and positive-sequence voltage- polarized directional elements are enabled and routed to control the negative-sequence and phase overcurrent elements. Date Code 20020215 Loss-of-Potential, Load Encroachment, and Directional Element Logic 4-19 SEL-351R Instruction Manual...
Page 160 The negative-sequence voltage-polarized directional element has priority over the positive-sequence voltage-polarized directional elements in controlling the phase overcurrent elements. The negative-sequence voltage-polarized directional element operates for 4-20 Loss-of-Potential, Load Encroachment, and Directional Element Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 161 Level 1 overcurrent elements set direction forward (DIR1 = F) Level 2 overcurrent elements set direction forward (DIR2 = F) Level 3 overcurrent elements set direction reverse (DIR3 = R) Date Code 20020215 Loss-of-Potential, Load Encroachment, and Directional Element Logic 4-21 SEL-351R Instruction Manual...
Page 162 Subsection Directional Control Provided by Torque Control Settings at the end of this section describes how to avoid this limitation for special cases. 4-22 Loss-of-Potential, Load Encroachment, and Directional Element Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 163 Figure 4.17: Negative-Sequence Voltage-Polarized Directional Element for Negative-Sequence and Phase Overcurrent Elements Date Code 20020215 Loss-of-Potential, Load Encroachment, and Directional Element Logic 4-23 SEL-351R Instruction Manual...
Page 164 Figure 4.18: Positive-Sequence Voltage-Polarized Directional Element for Phase Overcurrent Elements 4-24 Loss-of-Potential, Load Encroachment, and Directional Element Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 165 Figure 4.19: Routing of Directional Elements to Negative-Sequence and Phase Overcurrent Elements Figure 4.20: Direction Forward/Reverse Logic for Negative-Sequence Overcurrent Elements Date Code 20020215 Loss-of-Potential, Load Encroachment, and Directional Element Logic 4-25 SEL-351R Instruction Manual...
Page 166 Figure 4.21: Direction Forward/Reverse Logic for Phase Overcurrent Elements 4-26 Loss-of-Potential, Load Encroachment, and Directional Element Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 167 They have to be set by the user, whether setting E32 = AUTO or Y. These settings are: DIR1, DIR2, DIR3, DIR4, ORDER, 50P32P, and E32IV All these settings are explained in detail in the remainder of this subsection. Date Code 20020215 Loss-of-Potential, Load Encroachment, and Directional Element Logic 4-27 SEL-351R Instruction Manual...
Page 168 Level 1 overcurrent elements set direction forward (DIR1 = F) Level 2 overcurrent elements set direction forward (DIR2 = F) Level 3 overcurrent elements set direction reverse (DIR3 = R) 4-28 Loss-of-Potential, Load Encroachment, and Directional Element Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 169 32NE asserts according to Figure 4.7. In this case, directional control will be provided for neutral ground overcurrent elements only. Setting ORDER can be set with any element combination (e.g., ORDER = VQ, ORDER = Q). Date Code 20020215 Loss-of-Potential, Load Encroachment, and Directional Element Logic 4-29 SEL-351R Instruction Manual...
Page 170 If enable setting E32 = Y, settings Z2F and Z2R (negative-sequence impedance values) are calculated by the user and entered by the user, but setting Z2R must be at least 1.0 Ω secondary greater in value than setting Z2F. 4-30 Loss-of-Potential, Load Encroachment, and Directional Element Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 171 ) magnitude has to be greater than 1/10 of the positive-sequence current (I ) magnitude in order for the negative-sequence voltage-polarized I > directional elements to be enabled I • Date Code 20020215 Loss-of-Potential, Load Encroachment, and Directional Element Logic 4-31 SEL-351R Instruction Manual...
Page 172 ) magnitude in order for the negative-sequence voltage-polarized I > directional elements to be enabled • 2 . Again, this presumes at least one of the internal enables 32VE or 32IE is asserted. 4-32 Loss-of-Potential, Load Encroachment, and Directional Element Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 173 The a0 factor increases the security of the zero-sequence voltage-polarized directional element. It keeps the element from operating for zero-sequence current (system unbalance), which circulates due to line asymmetries, CT saturation during three-phase faults, etc. Date Code 20020215 Loss-of-Potential, Load Encroachment, and Directional Element Logic 4-33 SEL-351R Instruction Manual...
Page 174 SEL control equation setting E32IV should be deasserted to logical 0. OGIC 4-34 Loss-of-Potential, Load Encroachment, and Directional Element Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 175 In this example, this is accomplished by connecting a circuit breaker auxiliary contact from the identified circuit breaker to the SEL-351R: E32IV = IN6 (52a connected to optoisolated input IN6) Almost any desired control can be set in SEL control equation setting E32IV.
Page 177 Trip Settings Differences Between the SEL-321 and SEL-351R Recloser Control ........................ 5-12 Permissive Overreaching Transfer Trip (POTT) Logic............. 5-13 Use Existing SEL-321 Relay POTT Application Guide for the SEL-351R Recloser Control........................5-13 External Inputs ........................5-13 PT1 — Received Permissive Trip Signal(s) .............. 5-13 Timer Settings ........................
Page 178 Use Existing SEL-321 Relay DCUB Application Guide for the SEL-351R Recloser Control........................5-19 External Inputs ........................5-19 PT1, PT2 — Received Permissive Trip Signal(s)............5-19 LOG1, LOG2 — Loss-of-Guard Signal(s)..............5-20 Timer Settings ........................5-20 GARD1D — Guard-Present Delay ................5-20 UBDURD —...
Page 179 Figure 5.10: DCUB Logic ........................5-22 Figure 5.11: Unblocking Block Logic Routing to Trip Logic ............... 5-23 Figure 5.12: SEL-351R Recloser Control Connections to Communications Equipment for a Two-Terminal Line DCUB Scheme (setting ECOMM = DCUB1)......5-23 Figure 5.13: SEL-351R Recloser Control Connections to Communications Equipment for a Three-Terminal Line DCUB Scheme (setting ECOMM = DCUB2)......
Page 181: Trip Logic
This timer establishes the minimum time duration for which the TRIP Relay Word bit asserts. This is a rising edge initiated timer. The settable range for this timer is 4–16,000 cycles. See Figure 5.2. Date Code 20020215 Trip and Target Logic SEL-351R Instruction Manual...
Page 182 Level 2 overcurrent elements, TR is set with direction forward under- reaching Level 1 overcurrent elements and other time delayed elements (e.g., Level 2 definite- time overcurrent elements), and TRSOTF is set with nondirectional overcurrent elements. Figure 5.1: Trip Logic Trip and Target Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 183: Set Trip
1, regardless of other trip logic conditions. The Minimum Trip Duration Timer can be set no less than 4 cycles. Figure 5.2: Minimum Trip Duration Timer Operation (see bottom of Figure 5.1) Date Code 20020215 Trip and Target Logic SEL-351R Instruction Manual...
Page 184: Unlatch Trip
TR, it remains asserted at logical 1 for a minimum of 12 cycles. See Figures in Section 1: Factory-Set Logic for more information on factory-set SEL OGIC control equation settings TR and ULTR. Trip and Target Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 185: Program An Output For Tripping
TRSOTF (e.g., TRSOTF = 50P2) to trip after the circuit breaker closes. Figure 5.3 and the following discussion describe the three-pole open (3PO) logic and the SOTF logic. Date Code 20020215 Trip and Target Logic SEL-351R Instruction Manual...
Page 186: Three-Pole Open Logic
Three-pole open (3PO) logic is the top half of Figure 5.3. It is not affected by enable setting ESOTF (see Settings Sheet 1 of 28 in Section 9: Setting the SEL-351R Recloser Control). The open circuit breaker condition is determined from the combination of: •...
Page 187: Determining Three-Pole Open Condition Without Circuit Breaker Auxiliary Contact
Determining Three-Pole Open Condition Without Circuit Breaker Auxiliary Contact If a circuit breaker auxiliary contact is not connected to the SEL-351R Recloser Control, control equation setting 52A is set: OGIC 52A = 0 (numeral 0) With SEL control equation setting 52A continually at logical 0, 3PO logic is controlled OGIC solely by load detection element 50L.
Page 188: Switch-Onto-Fault Logic Output (Sotfe)
Circuit breaker closure is detected by monitoring the dc close bus. This is accomplished by wiring an optoisolated input on the SEL-351R (e.g., IN104) to the dc close bus. When a manual close or automatic reclosure occurs, optoisolated input IN104 is energized. SEL...
Page 189: Enable Setting Ecomm
SSISTED OGIC ENERAL VERVIEW The SEL-351R includes communications-assisted tripping schemes that provide unit-protection for transmission lines with the help of communications. No external coordination devices are required. Figure 5.4: Communications-Assisted Tripping Scheme Refer to Figure 5.4 and the top half of Figure 5.1.
Page 190: Trip Setting Trcomm
Level 2 directional phase instantaneous overcurrent element 67N2 Level 2 directional neutral ground instantaneous overcurrent element 67G2 Level 2 directional residual ground instantaneous overcurrent element 67Q2 Level 2 directional negative-sequence instantaneous overcurrent element 5-10 Trip and Target Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 191: Trip Settings Trsotf And Tr
TRCOMM or DTT), reprogram an LED with Relay Word bit COMMT (see Figure 5.1). The LED also has to be set as a trip-latch LED (see Front-Panel Status and Trip Target LEDs subsection in Section 1: Factory-Set Logic). Date Code 20020215 Trip and Target Logic 5-11 SEL-351R Instruction Manual...
Page 192: Use Existing Sel-321 Relay Application Guides For The Sel-351R Recloser Control
Control The SEL-351R does not have optoisolated input settings like the SEL-321 Relay. Rather, the optoisolated inputs of the SEL-351R are available as Relay Word bits and are used in SEL OGIC control equations. The following optoisolated input setting example is for a Permissive Overreaching Transfer Trip (POTT) scheme.
Page 193: Permissive Overreaching Transfer Trip (Pott) Logic
The SEL-321 Relay handles trip unlatching with setting TULO. The SEL-351R handles trip unlatching with SEL control equation setting ULTR. OGIC The SEL-321 Relay has single-pole trip logic. The SEL-351R does not have single-pole trip logic. (POTT) L ERMISSIVE VERREACHING...
Page 194: Timer Settings
Word bit PTRX if enable setting ECOMM = POTT. Relay Word bit PTRX is then the permissive trip receive input into the trip logic in Figure 5.1. Timer Settings See Section 9: Setting the SEL-351R Recloser Control for setting ranges. Z3RBD — Zone (Level) 3 Reverse Block Delay Current-reversal guard timer—typically set at 5 cycles.
Page 195: Z3Rb - Zone (Level) 3 Reverse Block
In a three-terminal line scheme, output contact OUT107 is set the same as OUT105 (see Figure 5.9): OUT107 = KEY EKEY — Echo Key Permissive Trip Permissive trip signal keyed by Echo logic (used in testing). Date Code 20020215 Trip and Target Logic 5-15 SEL-351R Instruction Manual...
Page 196 Figure 5.6: POTT Logic 5-16 Trip and Target Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 197: Variations For Permissive Underreaching Transfer Trip (Putt) Scheme
Depending on the installation, perhaps one output contact (e.g., OUT105 = KEY) could be connected in parallel to both transmitter inputs (TX) on the communication equipment in Figure 5.9. Then output contact OUT107 can be used for another function. Date Code 20020215 Trip and Target Logic 5-17 SEL-351R Instruction Manual...
Page 198: Directional Comparison Unblocking (Dcub) Logic
Figure 5.8: SEL-351R Recloser Control Connections to Communications Equipment for a Two-Terminal Line POTT Scheme Figure 5.9: SEL-351R Recloser Control Connections to Communications Equipment for a Three-Terminal Line POTT Scheme (DCUB) L IRECTIONAL OMPARISON NBLOCKING OGIC Enable the DCUB logic by setting ECOMM = DCUB1 or ECOMM = DCUB2. The DCUB logic in Figure 5.10 is an extension of the POTT logic in Figure 5.6.
Page 199: Use Existing Sel-321 Relay Dcub Application Guide For The Sel-351R Recloser Control
In two-terminal line DCUB applications (setting ECOMM = DCUB1), a permissive trip signal is received from one remote terminal. One optoisolated input on the SEL-351R (e.g., input IN104) is driven by a communications equipment receiver output (see Figure 5.12). Make SEL...
Page 200: Log1, Log2 - Loss-Of-Guard Signal(S)
In two-terminal line DCUB applications (setting ECOMM = DCUB1), a loss-of-guard signal is received from one remote terminal. One optoisolated input on the SEL-351R (e.g., input IN105) is driven by a communications equipment receiver output (see Figure 5.12). Make SEL...
Page 201: Ubb1, Ubb2 - Unblocking Block Output(S)
UBB, depending on enable setting ECOMM = DCUB1 or DCUB2. Relay Word bit UBB is the unblock block input into the trip logic in Figure 5.1. When UBB asserts to logical 1, tripping is blocked. Date Code 20020215 Trip and Target Logic 5-21 SEL-351R Instruction Manual...
Page 202 Figure 5.10: DCUB Logic 5-22 Trip and Target Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 203: Ptrx1, Ptrx2 - Permissive Trip Receive Outputs
(TX) on the communications equipment in Figure 5.13. Then output contact OUT107 can be used for another function. Figure 5.12: SEL-351R Recloser Control Connections to Communications Equipment for a Two-Terminal Line DCUB Scheme (setting ECOMM = DCUB1)
Page 204: Directional Comparison Blocking (Dcb) Logic
• Extends the received block signal by a settable time. Use Existing SEL-321 Relay DCB Application Guide for the SEL-351R Recloser Control Use the existing SEL-321 Relay DCB application guide (AG93-06) to help set up the SEL-351R in a DCB scheme (see preceding subsection Communications-Assisted Trip Logic—General Overview for more setting comparison information on the SEL-321/SEL-351R).
Page 205: Timer Settings
BT — — — — Received Block Trip Signal(s) In two-terminal line DCB applications, a block trip signal is received from one remote terminal. One optoisolated input on the SEL-351R (e.g., input IN104) is driven by a communications equipment receiver output (see Figure 5.15). Make SEL...
Page 206: Dstrt - Directional Carrier Start
The received block trip input (e.g., BT = IN104) is routed through a dropout timer (BTXD) in the DCB logic in Figure 5.14. The timer output (BTX) is routed to the trip logic in Figure 5.1. 5-26 Trip and Target Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 207 Then output contact OUT104 can be used for another function. Figure 5.16 also shows communication equipment RX (receive) output contacts from each remote terminal connected to separate inputs IN104 and IN106 on the SEL-351R. The inputs Date Code 20020215 Trip and Target Logic...
Page 208 An alternative to asserting the BT input is to change to a setting group where the DCB logic is not enabled. Figure 5.15: SEL-351R Recloser Control Connections to Communications Equipment for a Two-Terminal Line DCB Scheme 5-28...
Page 209 Figure 5.16: SEL-351R Recloser Control Connections to Communications Equipment for a Three-Terminal Line DCB Scheme - - - - P LED I DDITIONAL RONT ANEL TATUS AND ARGET NFORMATION A, B, and C Target LEDs “A” (Phase A) target LED is illuminated at the rising edge of trip if an overcurrent element causes the trip and Phase A is involved in the fault [likewise for "B"...
Page 210 Battery System Monitor, Metering, and Load Profile Functions. • Maximum/Minimum Metering—FAULT is used to block Maximum/Minimum metering updating. See subsection Maximum/Minimum Metering in Section 8: Breaker/ Recloser Monitor, Battery System Monitor, Metering, and Load Profile Functions. 5-30 Trip and Target Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 211 Unlatch Reclose Supervision Logic (bottom of Figure 6.2)......... 6-8 Settings Example 1 ....................... 6-9 SEL-351R(1) Recloser Control ..................6-9 SEL-351R(2) Recloser Control .................. 6-10 Other Setting Considerations for SEL-351R(1) and SEL-351R(2) Recloser Controls....................... 6-10 Settings Example 2 ......................6-11 Reclosing Relay.......................... 6-11 Reclosing Relay States and General Operation..............
Page 212 Figure 6.2: Reclose Supervision Logic (following open interval time-out)........... 6-5 Figure 6.3: Reclose Supervision Limit Timer Operation (refer to bottom of Figure 6.2)...... 6-6 Figure 6.4: SEL-351R Recloser Controls Installed at Both Ends of a Transmission Line in a High-Speed Reclose Scheme ..................6-9 Figure 6.5: Reclosing Relay States and General Operation ..............
Page 213: Close And Reclose Logic
CLOSE). This output closes the recloser for automatic reclosures and other close conditions (e.g., manual close initiation via serial port or optoisolated inputs). If automatic reclosing is not needed, but the SEL-351R Recloser Control is to close the circuit breaker for other close conditions (e.g., manual close initiation via serial port or optoisolated inputs), then this subsection is the only subsection that needs to be ®...
Page 214: Set Close
• The reclose initiation condition (79RI) makes a rising edge (logical 0 to logical 1) transition. • Or the Close Failure Timer times out (Relay Word bit CF = 1). Close and Reclose Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 215: Factory Settings Example
DP2: DP2 = IN101 This can be entered instead as: DP2 = 52A (presuming SEL control equation setting 52A = IN101 is made). OGIC Date Code 20020215 Close and Reclose Logic SEL-351R Instruction Manual...
Page 216: Program An Output For Closing
CLOSE Relay Word bit to logical 1. This input into the close logic in Figure 6.1 is an output of the reclose supervision logic in the following Figure 6.2. Close and Reclose Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 217 Figure 6.2: Reclose Supervision Logic (following open interval time-out) Date Code 20020215 Close and Reclose Logic SEL-351R Instruction Manual...
Page 218 Figure 6.3: Reclose Supervision Limit Timer Operation (refer to bottom of Figure 6.2) Close and Reclose Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 219: Settings And General Operation
(reclose supervision conditions—checked after reclosing relay open interval time-out) and setting: 79CLSD (Reclose Supervision Limit Time) See the settings sheets at the end of Section 9: Setting the SEL-351R Recloser Control for setting ranges. Reclose Supervision Limit Time = 0 (top of Figure 6.2) 79CLSD = 0.00 With this setting, the logic in the top of Figure 6.2 is operative.
Page 220: Set Reclose Supervision Logic (Bottom Of Figure 6.2)
79CLSD = OFF, reclose supervision condition 79CLS is not time limited. When an open interval times out, reclose supervision condition 79CLS is checked indefinitely until one of the other above unlatch conditions comes true. Close and Reclose Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 221: Settings Example 1
SEL-351R(1) Recloser Control Before allowing circuit breaker 52/1 to be reclosed after an open interval time-out, the SEL-351R(1) checks that Bus 1 voltage is hot and the transmission line voltage is dead. This requires reclose supervision settings: 79CLSD = 0.00 cycles...
Page 222: Sel-351R(2) Recloser Control
SEL-351R(2) Recloser Control The SEL-351R(2) checks that Bus 2 voltage is hot, the transmission line voltage is hot, and in synchronism after the reclosing relay open interval times out, before allowing circuit breaker 52/2 to be reclosed. This requires reclose supervision settings: 79CLSD = 0.00 cycles...
Page 223: Settings Example 2
The reclose enable setting, E79, has setting choices N, 1, 2, 3, and 4. Setting E79 = N defeats the reclosing relay. Setting choices 1 through 4 are the number of desired automatic reclosures (see Open Interval Timers that follows in this subsection). Date Code 20020215 Close and Reclose Logic 6-11 SEL-351R Instruction Manual...
Page 224: Reclosing Relay States And General Operation
The reclosing relay goes to the Lockout State if any one of the following occurs: • The shot counter is equal to or greater than the last shot at time of reclose initiation (e.g., all automatic reclosing attempts are unsuccessful—see Figure 6.6). 6-12 Close and Reclose Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 225: Reclosing Relay States And Settings/Setting Group Changes
79RSLD after the settings change and goes to the Reset State (if it is not already in the Reset State), and the shot counter returns to shot = 0. If the relay happens to trip during this reset timing, the SEL-351R will immediately go to the Lockout State, because shot = last shot.
Page 226: Close Logic Can Still Operate When The Reclosing Relay Is Defeated
The operation of these timers is affected by SEL control equation settings discussed later OGIC in this section. Also, see the settings sheets at the end of Section 9: Setting the SEL-351R Recloser Control. 6-14 Close and Reclose Logic...
Page 227: Open Interval Timers
79STL (stall open interval timing) can be set to control open OGIC interval timing [see Skip Shot and Stall Open Interval Timing Settings (79SKP and 79STL, respectively) later in this subsection]. Date Code 20020215 Close and Reclose Logic 6-15 SEL-351R Instruction Manual...
Page 228: Determination Of Number Of Reclosures (Last Shot)
CL (see Figure 6.1). OGIC Setting 79RSLD is also the reset timer used when the SEL-351R powers up, has individual settings changed for the active setting group, or the active setting group is changed (see Reclosing Relay States and Settings/Setting Group Changes earlier in this subsection).
Page 229: Monitoring Open Interval And Reset Timing
(e.g., it is in the Reset State or in the Lockout State), OPTMN deasserts to logical 0. The SEL-351R can only time on an open interval when it is in the Reclose Cycle State, but just because the relay is in the Reclose Cycle State does not necessarily mean the relay is timing on an open interval.
Page 230: Reclosing Relay Sel Ogic Control Equation Settings Overview
59A1 * !NOBATT * BCBOK * Reclose Supervision !DTFAIL These settings are discussed in detail in the remainder of this subsection. The longer factory settings are explained in Section 1: Factory-Set Logic. 6-18 Close and Reclose Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 231: Reclose Initiate And Reclose Initiate Supervision Settings
SEL-351R to successfully initiate reclosing and start timing on the first open interval. The SEL-351R is not yet in the reclose cycle state (79CY = logical 0) at the instant of the first trip operation.
Page 232: Other Settings Considerations
ULCL setting (unlatch close; see Figures 1.21 and 6.1 and accompanying explanation) when 79RI = !52A. Making this change to the ULCL setting keeps the SEL-351R from going to lockout prematurely for an instantaneous trip after an auto-reclose; by not turning CLOSE off until the circuit breaker status indication tells the relay that the breaker is closed.
Page 233: Drive-To-Lockout And Drive-To-Last Shot Settings
Three open intervals are also set in the factory settings, resulting in last shot = 3. Any time the SEL-351R is in the lockout state (Relay Word bit 79LO = logical 1), the SEL-351R is driven to last shot (if the shot counter is not already at a shot value greater than or equal to shot = 3):...
Page 234: Skip Shot And Stall Open Interval Timing Settings
(79STL = logical 1 still), the 79SKP setting is still processed. Once the trip condition goes away (Relay Word bit TRIP = logical 0), open interval timing can proceed. 6-22 Close and Reclose Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 235: Additional Settings Example 1
79SKP = logical 0, regardless of Relay Word bit 50P2. Additional Settings Example 2 If the SEL-351R is used on a feeder with a line-side independent power producer (cogenerator), the utility should not reclose into a line still energized by an islanded generator. To monitor line voltage and block reclosing, connect a line-side single-phase potential transformer to channel VS on the SEL-351R as shown in Figure 6.7.
Page 236: Additional Settings Example 3
Relay Word bit 79CY corresponds to the Reclose Cycle State. The reclosing relay is in one of the three reclosing relay states at any one time (see Figure 6.5 and Table 6.1). 6-24 Close and Reclose Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 237: Sequence Coordination Setting (79Seq)
Refer to Figure 6.8. In order for the sequence coordination logic in SEL-351R (1) to increment the shot counter by one count to keep in step with the operation of downstream SEL-351R (2), all the following have to occur in SEL-351R (1): •...
Page 238: Reclose Supervision Setting (79Cls)
[51P1T; (SEL-351R(1)] Fast curve - phase [SEL-351R(2)] 51P1 DWG: M351R089 Figure 6.8: SEL-351R Recloser Controls in Series, Requiring Sequence Coordination Reclose Supervision Setting (79CLS) See Reclose Supervision Logic earlier in this section. 6-26 Close and Reclose Logic Date Code 20020215...
Page 239 Control Equation Settings SS1 Through SS6 ....... 7-21 OGIC Operation of Serial Port GROUP Command and Front-Panel GROUP Pushbutton ..7-21 SEL-351R Disabled Momentarily During Active Setting Group Change......7-22 Active Setting Group Switching Example 1 ..............7-22 Start Out in Setting Group 1..................7-24 Switch to Setting Group 4 ..................
Page 240 Settings Example 2......................7-31 Settings Example 3......................7-32 Timers Reset When Power Is Lost, Settings Are Changed, or Active Setting Group Is Changed ........................7-32 Counters (SEL-351R-2 only) ..................7-33 OGIC Output Contacts.......................... 7-33 Settings Example........................ 7-34 Operation of Output Contacts for Different Output Contact Types........7-34 Output Contacts OUT101 Through OUT107.............
Page 241 Figure 7.8: Configured Manual Close Switch Drives Local Bit LB4 ............ 7-9 Figure 7.9: Remote Control Switches Drive Remote Bits RB1 Through RB8 (RB1 Through RB16 for the SEL-351R-2) ..................7-10 Figure 7.10: Traditional Latching Relay ....................7-12 Figure 7.11: Latch Control Switches Drive Latch Bits LT1 Through LT8 (LT1 Through LT16 for the SEL-351R-2)....................
Page 242 Figure 7.28: Traditional Panel Light Installations ................. 7-37 Figure 7.29: Rotating Default Display Replaces Traditional Panel Light Installations......7-38 Figure 7.30: Recloser Trip and Close Circuit Connections ..............7-52 Inputs, Outputs, Timers, and Other Control Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 243: Inputs, Outputs, Timers, And Other
Relay Word bits and SEL control equation setting examples are used throughout this OGIC section. See Section 9: Setting the SEL-351R Recloser Control for more information on Relay Word bits and SEL control equation settings. See Section 10: Serial Port...
Page 244: Input Debounce Timers
Time settings IN101D through IN106D are settable from 0.00 to 1.00 cycles (or to “AC”— discussed below). The SEL-351R takes the entered time setting and internally runs the timer at the nearest 1/16-cycle. For example, if setting IN5D = 0.80, internally the timer runs at the nearest 1/16-cycle: 13/16-cycles (13/16 = 0.8125).
Page 245: Settings Examples
In this example, Relay Word bit IN101 is used in the SEL control equation circuit breaker OGIC status setting: 52A = IN101 Connect input IN101 to a 52a circuit breaker auxiliary contact. Date Code 20020215 Inputs, Outputs, Timers, and Other Control Logic SEL-351R Instruction Manual...
Page 246: Input In102
See Section 6: Close and Reclose Logic for more information on SEL control equation OGIC setting 79DTL. The pickup/dropout timer for input IN102 (IN102D) is set at: IN102D = 1.00 cycle to provide input energization/deenergization debounce. Inputs, Outputs, Timers, and Other Control Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 247: Local Control Switches
The output of the local control switch in Figure 7.3 is a Relay Word bit LBn called a local bit, where n = 1 through 8 (1 through 16 for the SEL-351R-2). The local control switch logic in Figure 7.3 repeats for each local bit LB1 through LB8 (LB1 through LB16 for the SEL-351R-2).
Page 248: Local Control Switch Types
Note the first setting in Table 7.1 (NLBn) is the overall switch name setting. Make each label setting through the serial port using the command SET T. View these settings using the serial port command SHO T (see Section 9: Setting the SEL-351R Recloser Control and Section 10: Serial Port Communications and Commands).
Page 249: On/Off/Momentary Switch
ON/OFF/MOMENTARY Disable local control switches by “nulling out” all the label settings for that switch (see Section 9: Setting the SEL-351R Recloser Control). The local bit associated with this disabled local control switch is then fixed at logical 0. Date Code 20020215...
Page 250: Settings Examples
To keep reclosing from being initiated for this trip example, set local bit LB3 to drive the reclosing relay to lockout for a manual trip example (see Section 6: Close and Reclose Logic): 79DTL = ... + LB3 Inputs, Outputs, Timers, and Other Control Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 251: Additional Local Control Switch Application Ideas
Local Control Switch States Retained Power Loss The state of each local bit LB1 through LB8 (LB1 through LB16 for the SEL-351R-2) is retained if power to the relay is lost and restored. This feature makes the local bit feature behave the same as a traditional installation with panel mounted control switches.
Page 252 Through RB16 for the SEL-351R-2) The outputs of the remote control switches in Figure 7.9 are Relay Word bits RBn called remote bits, where n = 1 through 8 (1 through 16 for the SEL-351R-2), Use these remote bits in control equations.
Page 253: Remote Bit Application Ideas
Remote Bit States Not Retained When Power Is Lost The states of the remote bits RB1 through RB8 (RB1 through RB16 for the SEL-351R-2) are not retained if power to the relay is lost and then restored. The remote control switches always come back in the OFF position (corresponding remote bit is deasserted to logical 0) when power is restored to the relay.
Page 254 The output of the latch control switch in Figure 7.11 is a Relay Word bit LTn called a latch bit, where n = 1 through 8 (1 through 16 for the SEL-351R-2). The latch control switch logic in Figure 7.11 repeats for each latch bit LT1 through LT8 (LT1 through LT16 for the SEL-351R-2).
Page 255: Latch Control Switch Application Ideas
• Sequence coordination enable/disable Latch control switches can be applied to almost any control scheme. The following is an example of using a latch control switch to enable/disable the reclosing relay in the SEL-351R. Reclosing Relay Enable/Disable Setting Example Use a latch control switch to enable/disable the reclosing relay in the SEL-351R. In this example, a SCADA contact is connected to optoisolated input IN104.
Page 256: Feedback Control
IN104 should only change the state of the latch control switch once (e.g., latch bit LT1 changes state from logical 0 to logical 1). 7-14 Inputs, Outputs, Timers, and Other Control Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 257 IN104D. Thus, when using Relay Word bit IN104 in Figure 7.11 and Figure 7.12 and associated SEL control equations, keep in mind any time delay OGIC produced by the input pickup/dropout debounce timer IN104D. Date Code 20020215 Inputs, Outputs, Timers, and Other Control Logic 7-15 SEL-351R Instruction Manual...
Page 258: Use A Remote Bit Instead To Enable/Disable The Reclosing Relay
IN104 in the previous example. Remote bits RB1 through RB8 (RB1 through RB16 for the SEL-351R-2) are operated through the serial port. See Figure 7.9 and Section 10: Serial Port Communications and Commands for more information on remote bits.
Page 259: Latch Control Switch States Retained
Latch Control Switch States Retained Power Loss The states of the latch bits LT1 through LT8 (LT1 through LT16 for the SEL-351R-2) are retained if power to the relay is lost and then restored. If a latch bit is asserted (e.g., LT2 = logical 1) when power is lost, it comes back asserted when power is restored.
Page 260: Note: Make Latch Control Switch Settings With Care
(see Figure 7.16 and Figure 7.17). Suppose that SV6PU and SV6DO are both set to 300 cycles. Then the SV6T timer keeps the 7-18 Inputs, Outputs, Timers, and Other Control Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 261 Figure 7.16: Latch Control Switch (with Time Delay Feedback) Controlled by a Single Input to Enable/Disable Reclosing Figure 7.17: Latch Control Switch (with Time Delay Feedback) Operation Time Line Date Code 20020215 Inputs, Outputs, Timers, and Other Control Logic 7-19 SEL-351R Instruction Manual...
Page 262: Multiple Setting Groups
SS1 through SS6 have priority over the serial port GROUP OGIC command and the front-panel GROUP pushbutton in selecting the active setting group. 7-20 Inputs, Outputs, Timers, and Other Control Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 263: Ogic
See Section 10: Serial Port Communications and Commands for more information on the serial port GROUP command. See Section 11: Additional Front-Panel Interface Details for more information on the front-panel GROUP pushbutton. Date Code 20020215 Inputs, Outputs, Timers, and Other Control Logic 7-21 SEL-351R Instruction Manual...
Page 264: Active Setting Group Switching Example 2
SEL-351R Disabled Momentarily During Active Setting Group Change The SEL-351R is disabled for a few seconds while in the process of changing active setting groups. SEL-351R elements, timers, and logic are reset, unless indicated otherwise in the specific logic description. For example, during an active setting group change, the SEL-351R retains states for local bits LB1 through LB8 (LB1 through LB16 for the SEL-351R-2) and latch bits LT1 through LT8 (LT1 through LT16 for the SEL-351R-2).
Page 265 In this example, timer SV8T is used in both setting groups—different timers could have been used with the same operational result. The timers reset during the setting group change, allowing the same timer to be used in both setting groups. Date Code 20020215 Inputs, Outputs, Timers, and Other Control Logic 7-23 SEL-351R Instruction Manual...
Page 266 Group 1 after qualifying time setting TGR (perhaps set at a cycle or so to qualify the assertion of setting SS1). Optoisolated input IN105 also has its own built-in debounce timer (IN105D) available (see Figure 7.1). 7-24 Inputs, Outputs, Timers, and Other Control Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 267 Group 5 Group 6 The SEL-351R can be programmed to operate similarly. Use three optoisolated inputs to switch between the six setting groups in the SEL-351R. In this example, optoisolated inputs IN101, IN102, and IN103 on the relay are connected to a rotating selector switch in Figure 7.21.
Page 268: Selector Switch Starts Out In Position 3
SS3 = !IN103 * IN102 * IN101 = NOT(IN103) * IN102 * IN101 = NOT(logical 0) * logical 1 * logical 1 = logical 1 7-26 Inputs, Outputs, Timers, and Other Control Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 269: Selector Switch Switched To Position 5
With settings SS1 through SS6 all at logical 0, the serial port GROUP command or the front- panel GROUP pushbutton can be used to switch the active setting group from Group 5, in this example, to another desired setting group. Date Code 20020215 Inputs, Outputs, Timers, and Other Control Logic 7-27 SEL-351R Instruction Manual...
Page 270: Active Setting Group Retained
If individual settings are changed for a setting group other than the active setting group, there is no interruption of the active setting group (the relay is not momentarily disabled). 7-28 Inputs, Outputs, Timers, and Other Control Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 271: Note: Make Active Setting Group Switching Settings With Care
Timers SV7T through SV16T in Figure 7.24 have a setting range of almost 4.5 minutes: 0.00–16000.00 cycles in 0.25-cycle increments These timer setting ranges apply to both pickup and dropout times (SVnPU and SVnDO, n = 1 through 16). Date Code 20020215 Inputs, Outputs, Timers, and Other Control Logic 7-29 SEL-351R Instruction Manual...
Page 272 Figure 7.23: SEL Control Equation Variables/Timers SV1/SV1T Through SV6/SV6T OGIC Figure 7.24: SEL Control Equation Variables/Timers SV7/SV7T Through OGIC SV16/SV16T 7-30 Inputs, Outputs, Timers, and Other Control Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 273 Timer pickup setting SV6PU provides retrip delay, if desired (can be set to zero). Timer dropout setting SV6DO holds the retrip output (output contact OUT101) closed for extra time if needed after the breaker failure initiate signal (IN101) goes away. Date Code 20020215 Inputs, Outputs, Timers, and Other Control Logic 7-31 SEL-351R Instruction Manual...
Page 274 SV7 being reset to logical 0 (assuming input IN101 is not asserted). Relay Word bit SV7T is also reset to logical 0, and timer settings SV7PU and SV7DO load up again. 7-32 Inputs, Outputs, Timers, and Other Control Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 275: Sel Ogic Counters (Sel-351R-2 Only)
(SEL-351R-2 OGIC OUNTERS ONLY Eight (8) SEL counters are available in the SEL-351R-2. Three SEL control equations OGIC OGIC per counter define when the counter increments, decrements, or resets to zero, see Figure 7.26. Each rising edge of SCnI increments the counter as long as SCnD (decrement equation) and SCnR (reset equation) are not asserted, and the counter has not reached 999,999 counts.
Page 276: Settings Example
(a or b), the ALARM output contact closes or opens as demonstrated in Figure 7.27. An “a” type output contact is open when the output contact coil is deenergized and 7-34 Inputs, Outputs, Timers, and Other Control Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 277 (energized or deenergized) and output contact types (a or b) are demonstrated. See Output Contact Jumpers in Section 2: Additional Installation Details for output contact type options. Date Code 20020215 Inputs, Outputs, Timers, and Other Control Logic 7-35 SEL-351R Instruction Manual...
Page 278: Rotating Default Display
SCADA contacts, etc. They indicate such conditions as: circuit breaker open/closed reclosing relay enabled/disabled 7-36 Inputs, Outputs, Timers, and Other Control Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 279: Traditional Indicating Panel Lights
Traditional Indicating Panel Lights Replaced With Rotating Default Display The indicating panel lights are not needed if the rotating default display feature in the SEL-351R is used. Figure 7.29 shows the elimination of the indicating panel lights by using the rotating default display.
Page 280: General Operation Of Rotating Default Display Settings
Figure 7.29: Rotating Default Display Replaces Traditional Panel Light Installations There are eight (8) (16 on the SEL-351R-2) default displays available in the SEL-351R. Each default display has two complementary screens (e.g., BREAKER CLOSED and BREAKER OPEN) available. General Operation of Rotating Default Display Settings...
Page 281 Circuit Breaker Closed In Figure 7.29, optoisolated input IN101 is energized when the 52a circuit breaker auxiliary contact is closed, resulting in: DP2 = IN101 = logical 1 Date Code 20020215 Inputs, Outputs, Timers, and Other Control Logic 7-39 SEL-351R Instruction Manual...
Page 282 Circuit Breaker Open In Figure 7.29, optoisolated input IN101 is deenergized when the 52a circuit breaker auxiliary contact is open, resulting in: DP2 = IN101 = logical 0 7-40 Inputs, Outputs, Timers, and Other Control Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 283 0 (logical 0) or 1 (logical 1) and the corresponding text setting. For example, if an SEL-351R is protecting a 12 kV distribution feeder, labeled “Feeder 1204,” the feeder name can be continually displayed with the following settings...
Page 284 DP1 is always at logical 0, the OGIC corresponding text setting DP1_0 continually displays in the rotating default displays: 79 DISABLED 7-42 Inputs, Outputs, Timers, and Other Control Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 285 For example: SET T SET L DP1_0 = :IAPK (missing “:”) DP1 = 0 DP2_0 = ::IBPJ (misspelled mnemonic) DP2 = 0 Date Code 20020215 Inputs, Outputs, Timers, and Other Control Logic 7-43 SEL-351R Instruction Manual...
Page 286 Table 7.10 lists the breaker wear/counter values available for the rotating default display. These values correspond to the breaker wear/counter values available via the BREAKER A command (BRE A; see Section 10 for serial port commands). 7-44 Inputs, Outputs, Timers, and Other Control Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 287 1043 (corresponding mnemonic OPSCNTR) display the same value—the number of trips issued by the SEL-351R Recloser Control. The display “OPS CNTR” is more akin to the displays used in traditional recloser controls. Also, the following display pair (shown with example values):...
Page 288 Element Turned OFF If the time-overcurrent pickup is set off (e.g., 51P1P = OFF): 7-46 Inputs, Outputs, Timers, and Other Control Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 289 Note: Typically, the CTR and CTRN settings would have the same value (e.g., CTR = 1000 and CTRN = 1000) in a recloser application (channel IN wired residually with the phase current inputs—factory standard for the SEL-351R). The above examples (where CTR = 1000 and CTRN = 100) are for demonstration purposes only.
Page 290 P K = x . x x x B peak megavars in MVRCDI MV R C D E M= x . x x x C demand megavars in 7-48 Inputs, Outputs, Timers, and Other Control Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 291 - x . x x A/D -5 V supply 12VPS + 1 2 V _ P S = x x . x x 12 V supply Date Code 20020215 Inputs, Outputs, Timers, and Other Control Logic 7-49 SEL-351R Instruction Manual...
Page 292 % B phase trip & wear CTRWR C - O P S = x x x x x y y y % C phase trip & wear 7-50 Inputs, Outputs, Timers, and Other Control Logic Date Code 20020215 SEL-351R Instruction Manual...
Page 293 ECLOSER RIP AND LOSE IRCUITS Figure 7.30 is similar to Figure 17 in the Installation section in the SEL-351R Quick-Start Installation and User’s Guide, with additional detail: • Relay Word Bits: PINBD, PINC, PINE, and PINF (all debounced for three quarter cycles) •...
Page 294 Also, the trip circuit differs for motor-operated Cooper reclosers (as compared to Figure 7.30), requiring a few SEL-351R settings to be modified. Refer to SEL Application Guide AG99-10, Change Logic in SEL-351R Recloser Control for Motor-Operated Reclosers. Figure 7.30: Recloser Trip and Close Circuit Connections...
Page 295 Battery System Monitor ......................8-15 Battery System Operation ....................8-15 SEL-351R Puts Itself “To Sleep”................8-16 Keep 12 Vdc on While SEL-351R is “Asleep”............8-17 “Wake Up” the SEL-351R ..................8-17 Battery System Diagnostics ....................8-17 Automatic Battery Load Test ..................8-18 Battery Load Test via Front Panel................
Page 296 Demand Meter Settings and Settings Range ..............8-26 FIGURES Figure 8.1: Plotted Breaker Maintenance Points for a 25 kV Circuit Breaker ........8-6 Figure 8.2: SEL-351R Recloser Control Breaker Maintenance Curve for a 25 kV Circuit Breaker .......................... 8-8 Figure 8.3: Operation of SEL Control Equation Breaker Monitor Initiation Setting ....
Page 297: Breaker/Recloser Monitor, Battery
The SEL-351R updates and stores the contact wear information, and the number of trip operations, in non-volatile memory. You can view this information through the front-panel display and by communicating with the SEL-351R through any serial communication port with a computer.
Page 298 KASP3* kA Interrupted set point 3—maximum 0.10–999.00 kA in 0.01 kA steps *The ratio of settings KASP3/KASP1 must be: 5 ≤ KASP3/KASP1 ≤ 100 Breaker/Recloser Monitor, Battery System Monitor, Date Code 20020215 Metering, and Load Profile Functions SEL-351R Instruction Manual...
Page 299 IEEE Standard Guide for the Application, Operation, and Maintenance of Automatic Circuit Reclosers. These parameters are used in automatically making the settings in Table 8.1, when Date Code 20020215 Breaker/Recloser Monitor, Battery System Monitor, Metering, and Load Profile Functions SEL-351R Instruction Manual...
Page 300: Breaker Monitor Setting Example
Commands. Breaker Monitor Setting Example If your recloser is not included in Table 8.2, or you adapt the SEL-351R to operate a breaker, you can create a contact wear monitor curve for your specific breaker or recloser. The breaker/recloser contact wear monitor is set with breaker or recloser maintenance information provided by circuit breaker and recloser manufacturers.
Page 301 The breaker maintenance information in Table 8.4 is plotted in Figure 8.1. Connect the plotted points in Figure 8.1 for a breaker maintenance curve. To estimate this breaker maintenance curve in the SEL-351R contact wear monitor, three set points are entered: Set Point 1 maximum number of close/open operations with corresponding current interruption level.
Page 302 Figure 8.1: Plotted Breaker Maintenance Points for a 25 kV Circuit Breaker Breaker/Recloser Monitor, Battery System Monitor, Date Code 20020215 Metering, and Load Profile Functions SEL-351R Instruction Manual...
Page 303 First, use the SET FZ (global EZ settings) command in Access Level E (EZ) or Access Level 2 to make setting Recloser Wear Monitor (AUTO, Y, N) = Y. Then, in Access Level 2, use the SET G (global settings) command to make the following SEL-351R contact wear monitor settings:...
Page 304 Figure 8.2: SEL-351R Recloser Control Breaker Maintenance Curve for a 25 kV Circuit Breaker Breaker/Recloser Monitor, Battery System Monitor, Date Code 20020215 Metering, and Load Profile Functions SEL-351R Instruction Manual...
Page 305: Operation Of Sel Ogic Control Equation Breaker Monitor Initiation Setting Bkmon
See Figure 8.8 and accompanying text for more information on setting BKMON. The operation of the breaker monitor maintenance curve, when new current values are read in, is explained in the following example. Date Code 20020215 Breaker/Recloser Monitor, Battery System Monitor, Metering, and Load Profile Functions SEL-351R Instruction Manual...
Page 306: Breaker Monitor Operation Example
BRE R command. Additionally, logic outputs assert for alarm or other control applications—see the following discussion. 8-10 Breaker/Recloser Monitor, Battery System Monitor, Date Code 20020215 Metering, and Load Profile Functions SEL-351R Instruction Manual...
Page 307 Figure 8.4: Breaker Monitor Accumulates 10% Wear Accumulates 25% Wear Figure 8.6: Breaker Monitor Figure 8.7: Breaker Monitor Accumulates 50% Wear Accumulates 100% Wear Date Code 20020215 Breaker/Recloser Monitor, Battery System Monitor, 8-11 Metering, and Load Profile Functions SEL-351R Instruction Manual...
Page 308: Breaker Monitor Output
• Accumulated interrupted current from externally initiated trips • Percent contact wear for each phase • Date when the preceding items were last reset via the BRE R command 8-12 Breaker/Recloser Monitor, Battery System Monitor, Date Code 20020215 Metering, and Load Profile Functions SEL-351R Instruction Manual...
Page 309: Via Front Panel
BRE A and BRE R are also available via the front-panel OTHER pushbutton. See the OTHER pushbutton in the Pushbutton Primary Functions subsection in the Front-Panel Interface section of the SEL-351R Quick-Start Installation and User’s Guide. Determination of Relay Initiated Trips and Externally Initiated Trips See BRE Command (Breaker Monitor Data) in Section 10: Serial Port Communications and Commands.
Page 310: Factory Default Setting Example
Figure 8.8: Input IN102 Connected to Trip Bus for Breaker Monitor Initiation If the SEL control equation breaker monitor initiation setting is set: OGIC BKMON = IN102 then the SEL-351R monitor sees all trips. 8-14 Breaker/Recloser Monitor, Battery System Monitor, Date Code 20020215 Metering, and Load Profile Functions...
Page 311: Battery System Monitor
The two series connected 12 V, 8.0 Ah sealed lead-acid batteries create a 24 Vdc battery system that powers the SEL-351R and provides trip and close power to the recloser when the 120 Vac source is deenergized. The SEL-351R includes a temperature-compensated, dual rate, 24 V battery charger powered from an external 120 Vac source.
Page 312: Sel-351R Puts Itself "To Sleep
SEL-351R and trip the recloser. A 22000 µF capacitor is therefore included in the battery system to maintain power to the SEL-351R and provide energy to trip the recloser. The capacitor is sized to provide at least 0.5 seconds of control power and trip energy after 120 Vac power is lost and with the batteries failed or disconnected—enough time for a high-current...
Page 313: Keep 12 Vdc On While Sel-351R Is "Asleep
Keep 12 Vdc on While SEL-351R is “Asleep” If both the following conditions are true when the SEL-351R puts itself to sleep, due to having reached the % Battery capacity for sleep setting (e.g., 20% capacity): • Setting Keep the 12 V power on while asleep = Y •...
Page 314: Automatic Battery Load Test
SEL-351R maintains a low-rate charging current, so it is still in the charge mode. After the 24-hour timer runs out and the SEL-351R is still in the charge mode, a 1-A load is automatically paralleled with the battery for 5 seconds. If battery voltage drops below 80% nominal (temperature-compensated voltage level) during this load test, the BATTERY PROBLEM LED illuminates and stays illuminated until the next battery test is successful.
Page 315: Battery Load Test Via Serial Port
Battery Load Test via Serial Port You can initiate a battery load test via the serial communication port by sending the BTT NOW command. The SEL-351R responds with one of the following results: If the battery monitor/charger has a problem, the following message is displayed: Battery Charger Board FAILED The BATTERY PROBLEM LED already would be illuminated for this condition.
Page 316: Battery Status
• Battery monitor/charger failure (Relay Word bit BCBOK = logical 0) You also can press the STATUS pushbutton on the front panel of the SEL-351R to access more battery status information. Use the secondary function up/down arrow pushbuttons to move to different status screens.
Page 317: Metering
Phase A, Phase 3–4 to primary Phase B, and Phase 5-6 to primary Phase C. If this is not the case, you will need to modify the SEL-351R terminal strip connections to obtain the proper phase and phase polarity.
Page 318: Phantom Voltages
The SEL-351R-2 can generate phantom voltages from a single voltage connected to the VA input. First, the SEL-351R-2 rotates the phasor of the system voltage to coincide with the fact that it is measured as VA. Next, if the voltage is a phase-to-phase quantity, the SEL-351R-2 divides the magnitude by the square root of 3.
Page 319 Figure 8.9: Response of Thermal and Rolling Demand Meters to a Step Input (setting DMTC = 15 minutes) Date Code 20020215 Breaker/Recloser Monitor, Battery System Monitor, 8-23 Metering, and Load Profile Functions SEL-351R Instruction Manual...
Page 320: Thermal Demand Meter Response (Edem = Thm)
DMTC = 15 minutes, referenced to when the step current input is first applied. The SEL-351R updates thermal demand values approximately every 2 seconds. The factory default Access Level 2 Demand Meter Time Constant setting is DMTC = 5 minutes.
Page 321: Time = 0 Minutes
1.0 per unit 0 to 5 minutes 1.0 per unit Rolling demand meter response at “Time = 5 minutes” = 1.0/3 = 0.33 per unit Date Code 20020215 Breaker/Recloser Monitor, Battery System Monitor, 8-25 Metering, and Load Profile Functions SEL-351R Instruction Manual...
Page 322: Time = 10 Minutes
Note: Changing setting EDEM or DMTC resets the demand meter values to zero. This also applies to changing the active setting group, and setting EDEM or DMTC is different in 8-26 Breaker/Recloser Monitor, Battery System Monitor, Date Code 20020215 Metering, and Load Profile Functions SEL-351R Instruction Manual...
Page 323 (PDEM, NDEM, GDEM, and QDEM) to alarm for high loading or unbalance conditions. Use in other schemes such as the following example. Figure 8.11: Demand Current Logic Outputs Date Code 20020215 Breaker/Recloser Monitor, Battery System Monitor, 8-27 Metering, and Load Profile Functions SEL-351R Instruction Manual...
Page 324: Demand Current Logic Output Application-Raise Pickup For Unbalance
!GDEM + GDEM * 50G5 Refer to Figure 8.11, Figure 8.12, and Figure 3.19. Figure 8.12: Raise Pickup of Residual Ground Time-Overcurrent Element for Unbalance Current 8-28 Breaker/Recloser Monitor, Battery System Monitor, Date Code 20020215 Metering, and Load Profile Functions SEL-351R Instruction Manual...
Page 325: Residual Ground Demand Current Below Pickup Gdemp
NOT(logical 0) + (logical 0) * 50G5 = logical 1 Thus, the residual ground time-overcurrent element 51G1T operates on its standard pickup again: 51G1P = 1.50 A secondary Date Code 20020215 Breaker/Recloser Monitor, Battery System Monitor, 8-29 Metering, and Load Profile Functions SEL-351R Instruction Manual...
Page 326: View Or Reset Demand Metering Information
MET D, MET RD, and MET RP are also available via the front-panel METER pushbutton. See the METER pushbutton in the Pushbutton Primary Functions subsection in the Front-Panel Interface section of the SEL-351R Quick-Start Installation and User’s Guide. Demand Metering Updating and Storage The SEL-351R updates demand values approximately every 2 seconds.
Page 327: Via Front Panel
MET M and MET RM are also available via the front-panel METER pushbutton. See the METER pushbutton in the Pushbutton Primary Functions subsection in the Front-Panel Interface section of the SEL-351R Quick-Start Installation and User’s Guide. Date Code 20020215 Breaker/Recloser Monitor, Battery System Monitor,...
Page 328: Maximum/Minimum Metering Updating And Storage
• Megawatt and megavar values are subject to the above voltage and current thresholds. The SEL-351R stores maximum/minimum values to nonvolatile memory once per day (it overwrites the previous stored value if it is exceeded). Should the control completely lose control power or go into the “sleep”...
Page 329 13 days of data at an LDAR of 5 minutes, if all 15 values are used. If less than 15 values are specified, the SEL-351R will be able to store more days of data before data overwrite occurs. Likewise, if the interval is set longer, the SEL-351R will be able to store more days of data before data overwrite occurs.
Page 330 SEL-351R displays all load buffer records for the specified date. If the command is entered with two date parameters [a] [b] (i.e., LDP 7/7/96 8/8/96), the SEL-351R displays all load records occurring from date [a] through date [b] inclusive. Example LDP...
Page 331 If the requested load profile report rows do not exist, the relay responds: No Load Profile Data Determining the Size of the Load Profile Buffer The LDP D command displays maximum number of days of data the SEL-351R may acquire with the present settings, before data overwrite will occur. =>LDP D <ENTER>...
Page 333 Set Command Editing Keystrokes..................9-3 Table 9.3: SEL-351R Recloser Control Relay Word Bits ..............9-18 Table 9.4: Relay Word Bit Definitions for SEL-351R Recloser Control ........... 9-19 FIGURES Figure 9.1: U.S. Moderately Inverse Curve: U1 ................... 9-5 Figure 9.2: U.S. Inverse Curve: U2....................... 9-5 Figure 9.3: U.S.
Page 335 Automatic recloser monitor, battery monitor, etc. * located at the end of this section ** located at the end of the Settings section in the SEL-351R Quick-Start Installation and User’s Guide. View settings with the respective serial port SHOWSET commands (SHO, SHO L, SHO G, SHO R, SHO T, SHO P, SHO EZ, SHO FZ).
Page 336 TERSE option. When you issue the SET command, the SEL-351R presents a list of settings, one at a time. Enter a new setting, or press <ENTER> to accept the existing setting. Editing keystrokes are shown in Table 9.2.
Page 337 <CTRL> X Aborts editing session without saving changes. The SEL-351R checks each entry to ensure that it is within the setting range. If it is not, an “Out of Range” message is generated, and the control prompts for the setting again.
Page 338 Newer microprocessor-based control designation Use either designation in making curve settings in the SEL-351R. See Table 8 and Table 9 and following text in the Settings section of the SEL-351R Quick-Start Installation and User’s Guide for more information on available time-overcurrent curves, including user-programmable curves.
Page 339 Figure 9.2: U.S. Inverse Curve: U2 Figure 9.1: U.S. Moderately Inverse Curve: Figure 9.4: U.S. Extremely Inverse Curve: Figure 9.3: U.S. Very Inverse Curve: U3 Date Code 20020215 Setting the SEL-351R Recloser Control SEL-351R Instruction Manual...
Page 340 Figure 9.5: U.S. Short-Time Inverse Curve: Figure 9.7: I.E.C. Class B Curve (Very Figure 9.6: I.E.C. Class A Curve (Standard Inverse): C2 Inverse): C1 Setting the SEL-351R Recloser Control Date Code 20020215 SEL-351R Instruction Manual...
Page 341 Figure 9.8: I.E.C. Class C Curve (Extremely Figure 9.9: I.E.C. Long-Time Inverse Curve: Inverse): C3 Figure 9.10: I.E.C. Short-Time Inverse Curve: C5 Date Code 20020215 Setting the SEL-351R Recloser Control SEL-351R Instruction Manual...
Page 342 Figure 9.11: Recloser Control Response Curves A, C, N, and W Setting the SEL-351R Recloser Control Date Code 20020215 SEL-351R Instruction Manual...
Page 343 Figure 9.12: Recloser Control Response Curves B, R, 2, and 3 Date Code 20020215 Setting the SEL-351R Recloser Control SEL- - - - 351R Instruction Manual...
Page 344 Figure 9.13: Recloser Control Response Curves D, 8PLUS, and 16 9-10 Setting the SEL-351R Recloser Control Date Code 20020215 SEL- - - - 351R Instruction Manual...
Page 345 Figure 9.14: Recloser Control Response Curves F, H, J, and 1 Date Code 20020215 Setting the SEL-351R Recloser Control 9-11 SEL- - - - 351R Instruction Manual...
Page 346 Figure 9.15: Recloser Control Response Curves G, V, 6, and 13 9-12 Setting the SEL-351R Recloser Control Date Code 20020215 SEL- - - - 351R Instruction Manual...
Page 347 Figure 9.16: Recloser Control Response Curves E, P, and 18 Date Code 20020215 Setting the SEL-351R Recloser Control 9-13 SEL- - - - 351R Instruction Manual...
Page 348 Figure 9.17: Recloser Control Response Curves KG, Y, Z, and 5 9-14 Setting the SEL-351R Recloser Control Date Code 20020215 SEL- - - - 351R Instruction Manual...
Page 349 Figure 9.18: Recloser Control Response Curves KP, M, T, and 17 Date Code 20020215 Setting the SEL-351R Recloser Control 9-15 SEL- - - - 351R Instruction Manual...
Page 350 Figure 9.19: Recloser Control Response Curves 4, 9, 11, and 14 9-16 Setting the SEL-351R Recloser Control Date Code 20020215 SEL- - - - 351R Instruction Manual...
Page 351 Figure 9.20: Recloser Control Response Curves L, 7, 8, and 15 Date Code 20020215 Setting the SEL-351R Recloser Control 9-17 SEL-351R Instruction Manual...
Page 352 [see TAR Command (Target) in Section 10: Serial Port Communications and Commands]. Rows 0 and 1 are reserved for the display of the two front-panel target LED rows. Table 9.3: SEL-351R Recloser Control Relay Word Bits Relay Word Bits 50A1...
Page 353 LT13 LT14 LT15 LT16 ™ not available in SEL-351R-0. IRRORED Only available in SEL-351R-2. Table 9.4: Relay Word Bit Definitions for SEL-351R Recloser Control Primary Definition Application 50A1 Level 1 A-phase instantaneous overcurrent element Tripping, (A-phase current above pickup setting 50P1P; see Control Figure 3.1)
Page 354 Level 1 BC-phase-to-phase instantaneous overcurrent element (BC-phase-to-phase current above pickup setting 50PP1P; see Figure 3.7) 50CA1 Level 1 CA-phase-to-phase instantaneous overcurrent element (CA-phase-to-phase current above pickup setting 50PP1P; see Figure 3.7) 9-20 Setting the SEL-351R Recloser Control Date Code 20020215 SEL-351R Instruction Manual...
Page 355 51P1T (see Figure 3.14) 51P1T Phase time-overcurrent element 51P1T timed out Tripping (see Figure 3.14) 51P1R Phase time-overcurrent element 51P1T reset (see Testing Figure 3.14) Date Code 20020215 Setting the SEL-351R Recloser Control 9-21 SEL-351R Instruction Manual...
Page 356 51G2R Residual ground time-overcurrent element 51G2T Testing reset (see Figure 3.19) 51Q** Negative-sequence current above pickup setting Testing, Control 51QP for negative-sequence time-overcurrent element 51QT (see Figure 3.20) 9-22 Setting the SEL-351R Recloser Control Date Code 20020215 SEL-351R Instruction Manual...
Page 357 67N2 Level 2 neutral ground instantaneous overcurrent element (derived from 50N2; see Figure 3.8) 67N3 Level 3 neutral ground instantaneous overcurrent element (derived from 50N3; see Figure 3.8) Date Code 20020215 Setting the SEL-351R Recloser Control 9-23 SEL-351R Instruction Manual...
Page 358 (residual ground current above pickup setting 50G4P; see Figure 3.10) 50Q1** Level 1 negative-sequence instantaneous overcurrent Testing, Control element (negative-sequence current above pickup setting 50Q1P; see Figure 3.12) 9-24 Setting the SEL-351R Recloser Control Date Code 20020215 SEL-351R Instruction Manual...
Page 359 Level 3 residual ground definite-time overcurrent element 67G3T timed out (derived from 67G3; see Figure 3.10) 67G4T Level 4 residual ground definite-time overcurrent element 67G4T timed out (derived from 67G4; see Figure 3.10) Date Code 20020215 Setting the SEL-351R Recloser Control 9-25 SEL-351R Instruction Manual...
Page 360 (residual ground current above pickup setting 50G6P; see Figure 3.11) 50Q5** Level 5 negative-sequence instantaneous overcurrent Control element (negative-sequence current above pickup setting 50Q5P; see Figure 3.13) 9-26 Setting the SEL-351R Recloser Control Date Code 20020215 SEL-351R Instruction Manual...
Page 361 Forward negative-sequence voltage-polarized directional element (for ground; see Figures 4.4, 4.9, 4.12, and 4.13) R32QG Reverse negative-sequence voltage-polarized directional element (for ground; see Figures 4.4, 4.9, 4.12, and 4.13) Date Code 20020215 Setting the SEL-351R Recloser Control 9-27 SEL-351R Instruction Manual...
Page 362 27C1 C-phase instantaneous undervoltage element (C-phase voltage below pickup setting 27P1P; see Figure 3.21) 27A2 A-phase instantaneous undervoltage element (A-phase voltage below pickup setting 27P2P; see Figure 3.21) 9-28 Setting the SEL-351R Recloser Control Date Code 20020215 SEL-351R Instruction Manual...
Page 363 59CA CA-phase-to-phase instantaneous overvoltage element (CA-phase-to-phase voltage above pickup setting 59PP; see Figure 3.22) 59N1 Zero-sequence instantaneous overvoltage element (zero-sequence voltage above pickup setting 59N1P; see Figure 3.22) Date Code 20020215 Setting the SEL-351R Recloser Control 9-29 SEL-351R Instruction Manual...
Page 364 81D2 Level 2 instantaneous frequency element (with corresponding pickup setting 81D2P; see Figure 3.28) 81D3 Level 3 instantaneous frequency element (with corresponding pickup setting 81D3P; see Figure 3.28) 9-30 Setting the SEL-351R Recloser Control Date Code 20020215 SEL-351R Instruction Manual...
Page 365 Level 6 definite-time frequency element 81D6T timed out (derived from 81D6; see Figure 3.28) VPOLV Positive-sequence polarization voltage valid (see Testing Figure 4.18) Loss-of-potential (see Figure 4.1) Testing, Special directional control schemes Date Code 20020215 Setting the SEL-351R Recloser Control 9-31 SEL-351R Instruction Manual...
Page 366 Remote Bit 5 asserted (see Figure 7.9) Remote Bit 6 asserted (see Figure 7.9) Remote Bit 7 asserted (see Figure 7.9) Remote Bit 8 asserted (see Figure 7.9) 9-32 Setting the SEL-351R Recloser Control Date Code 20020215 SEL-351R Instruction Manual...
Page 367 (see Figure 7.24) SV5T control equation variable timer output Control OGIC SV5T asserted (see Figure 7.23) SV6T control equation variable timer output OGIC SV6T asserted (see Figure 7.23) Date Code 20020215 Setting the SEL-351R Recloser Control 9-33 SEL-351R Instruction Manual...
Page 368 SV16T asserted (see Figure 7.24) 79RS Reclosing relay in the Reset State (see Figure 6.5 and Table 6.1) 79CY Reclosing relay in the Reclose Cycle State (see Figure 6.5 and Table 6.1) 9-34 Setting the SEL-351R Recloser Control Date Code 20020215 SEL-351R Instruction Manual...
Page 369 Target Reset. TRGTR pulses to logical 1 for one Control processing interval when either the TARGET RESET Pushbutton is pushed or the TAR R (Target Reset) serial port command is executed (see Figures 5.1 and 5.17) Date Code 20020215 Setting the SEL-351R Recloser Control 9-35 SEL-351R Instruction Manual...
Page 370 System Monitor in Section 8) DTFAIL Battery discharge test has failed (see Battery System Alarm, Monitor in Section 8) indication ALARM Output contact ALARM asserted (see Figure 7.27) 9-36 Setting the SEL-351R Recloser Control Date Code 20020215 SEL-351R Instruction Manual...
Page 371 Directional carrier start (see Figure 5.14) Output contact assignment NSTRT Nondirectional carrier start (see Figure 5.14) STOP Carrier stop (see Figure 5.14) Block trip input extension (see Figure 5.14) Testing Date Code 20020215 Setting the SEL-351R Recloser Control 9-37 SEL-351R Instruction Manual...
Page 372 Reclose Enabled pushbutton output (see Figure 1.35) Remote Enabled pushbutton output (see Figure 1.35) Alternate Settings pushbutton output (see Figure 1.35) Lock pushbutton output (see Figure 1.35) Aux. 1 pushbutton output (see Figure 1.36) 9-38 Setting the SEL-351R Recloser Control Date Code 20020215 SEL-351R Instruction Manual...
Page 373 High current trip—phase (see Figure 1.11) High current trip—ground (see Figure 1.12) High current lockout—phase (see Figure 1.13) High current lockout—ground (see Figure 1.14) Phase cold load pickup scheme enabled (see Figure 1.2 Date Code 20020215 Setting the SEL-351R Recloser Control 9-39 SEL-351R Instruction Manual...
Page 374 Channel B, received bit 7 RMB6B Channel B, received bit 6 RMB5B Channel B, received bit 5 RMB4B Channel B, received bit 4 RMB3B Channel B, received bit 3 9-40 Setting the SEL-351R Recloser Control Date Code 20020215 SEL-351R Instruction Manual...
Page 375 Reverse directional control routed to neutral ground overcurrent elements(see Figures 4.4, 4.13, and 4.15) DCONN DNP port is connected Automatic Dial-Out DDATA DNP has unsolicited data ready to send Date Code 20020215 Setting the SEL-351R Recloser Control 9-41 SEL-351R Instruction Manual...
Page 376 Note that most of the settings in the settings sheets that follow include references for additional information. The following explanations are for settings that do not have reference information anywhere else in the instruction manual. 9-42 Setting the SEL-351R Recloser Control Date Code 20020215 SEL-351R Instruction Manual...
Page 377 Typical Terminal Identifiers include an abbreviation of the substation name and line terminal. The SEL-351R tags each report (event report, meter report, etc.) with the Relay Identifier and Terminal Identifier. This allows you to distinguish the report as one generated for a specific breaker and substation.
Page 378 The settings sheets that follow include the definition and input range for most of the settings in the SEL-351R. The settings sheets for the EZ settings are located at the end of the Settings section in the SEL-351R Quick-Start Installation and User’s Guide. See Table 9.1 for settings sheets references.
Page 379 ETTINGS HEET Page 1 of 28 SEL-351R R OR THE ECLOSER ONTROL Date ROUP ETTINGS ERIAL OMMAND RONT ANEL Identifier Labels (see Settings Explanations in Section 9) Relay Identifier (30 characters) RID = Terminal Identifier (30 characters) TID = Current and Potential Transformer Ratios (see Settings Explanations in Section 9) Phase (IA, IB, IC) Current Transformer Ratio (1.0–6000.0)
Page 380 ETTINGS HEET Page 2 of 28 SEL-351R R OR THE ECLOSER ONTROL Date ROUP ETTINGS ERIAL OMMAND RONT ANEL Synchronism check (Y, N) (see Figures 3.24 and 3.25) E25 = Fault location (Y, N) (see Table 12.1 and Fault Location in Section 12) EFLOC = Loss-of-potential (Y, Y1, N) (see Figure 4.1)
Page 381 ETTINGS HEET Page 3 of 28 SEL-351R R OR THE ECLOSER ONTROL Date ROUP ETTINGS ERIAL OMMAND RONT ANEL Neutral Ground Inst./Def.-Time Overcurrent Elements—Channel IN (see Figures 3.8 and 3.9) (Number of neutral ground element pickup settings dependent on preceding enable setting E50N = 1–6) Pickup (OFF, 0.005–1.500A)
Page 382 ETTINGS HEET Page 4 of 28 SEL-351R R OR THE ECLOSER ONTROL Date ROUP ETTINGS ERIAL OMMAND RONT ANEL Negative-Sequence Inst./Def.-Time Overcurrent Elements (see Figures 3.12 and 3.13)* (Number of negative-sequence element time delay settings dependent on preceding enable setting E50Q = 1–6)
Page 383 ETTINGS HEET Page 5 of 28 SEL-351R R OR THE ECLOSER ONTROL Date ROUP ETTINGS ERIAL OMMAND RONT ANEL Constant time adder (0.00–60.00 cyc.) 51P2CT = Minimum response (0.00–60.00 cyc.) 51P2MR = Neutral Ground Time-Overcurrent Elements—Channel IN (see Figure 3.16 and 3.17) (Make the following settings if preceding enable setting E51N = 1 or 2) Pickup (OFF, 0.005–0.160 A)
Page 384 ETTINGS HEET Page 6 of 28 SEL-351R R OR THE ECLOSER ONTROL Date ROUP ETTINGS ERIAL OMMAND RONT ANEL (Make the following settings if preceding enable setting E51G = 2) Pickup (OFF, 0.10–3.20 A) 51G2P = Curve (U1–U5, C1–C5, recloser or user curve; see Figures 9.1 through 9.20)
Page 385 ETTINGS HEET Page 7 of 28 SEL-351R R OR THE ECLOSER ONTROL Date ROUP ETTINGS ERIAL OMMAND RONT ANEL Directional Elements (see Directional Control Settings in Section 4) (Make settings DIR1–DIR4 and ORDER if preceding enable setting E32 = Y or AUTO)
Page 386 ETTINGS HEET Page 8 of 28 SEL-351R R OR THE ECLOSER ONTROL Date ROUP ETTINGS ERIAL OMMAND RONT ANEL Negative-sequence (V2) overvoltage pickup (OFF, 0.0–200.0 V secondary) 59QP = Positive-sequence (V1) overvoltage pickup (OFF, 0.0–300.0 V secondary) 59V1P = Channel VS undervoltage pickup (OFF, 0.0–300.0 V secondary) 27SP = Channel VS overvoltage pickup (OFF, 0.0–300.0 V secondary)
Page 387 ETTINGS HEET Page 9 of 28 SEL-351R R OR THE ECLOSER ONTROL Date ROUP ETTINGS ERIAL OMMAND RONT ANEL Reclosing Relay (see Tables 6.2 and 6.3) (Make the following settings if preceding enable setting E79 = Y) Open interval 1 time (0.00–999999.00 cycles in 0.25-cycle steps) 79OI1 = Open interval 2 time (0.00–999999.00 cycles in 0.25-cycle steps)
Page 388 ETTINGS HEET Page 10 of 28 SEL-351R R OR THE ECLOSER ONTROL Date ROUP ETTINGS ERIAL OMMAND RONT ANEL DCB Trip Scheme Settings (see Figure 5.14) (Make the following settings if preceding enable setting ECOMM = DCB) Zone (level) 3 reverse pickup time delay (0.00–16000.00 cycles in 0.25-cycle steps)
Page 389 ETTINGS HEET Page 11 of 28 SEL-351R R OR THE ECLOSER ONTROL Date ROUP ETTINGS ERIAL OMMAND RONT ANEL Control Equation Variable Timers (see Figures 7.23 and 7.24) OGIC (Number of timer pickup/dropout settings dependent on preceding enable setting ESV = 1–16) SV1 Pickup Time (0–999999.00 cycles in 0.25-cycle steps)
Page 390 ETTINGS HEET Page 12 of 28 SEL-351R R OR THE ECLOSER ONTROL Date ROUP ETTINGS ERIAL OMMAND RONT ANEL Recloser Control Logic Enable Settings (see Section 1) Operations—phase fast curve (OFF, 1–5) OPPH = Operations—ground fast curve (OFF, 1–5) OPGR = Operations to lockout—phase (OFF, 1–5)
Page 391 ETTINGS HEET Page 13 of 28 SEL-351R R OR THE ECLOSER ONTROL Date SET L) OGIC ONTROL QUATION ETTINGS ERIAL OMMAND control equation settings consist of Relay Word bits (see Table 9.3) and SEL control OGIC OGIC equation operators * (AND), + (OR), ! (NOT), / (rising edge), \ (falling edge), and ( ) (parentheses).
Page 392 OGIC ONTROL QUATION ETTINGS ERIAL OMMAND Latch Bits Set/Reset Equations (See Figure 7.11) [Note: LT9 through LT16 for the SEL-351R-2 only] Set Latch Bit LT1 SET1 = Reset Latch Bit LT1 RST1 = Set Latch Bit LT2 SET2 = Reset Latch Bit LT2...
Page 393 ETTINGS HEET Page 15 of 28 SEL-351R R OR THE ECLOSER ONTROL Date SET L) OGIC ONTROL QUATION ETTINGS ERIAL OMMAND Torque Control Equations for Inst./Def.-Time Overcurrent Elements [Note: torque control equation settings cannot be set directly to logical 0] Level 1 phase (see Figure 3.3)
Page 394 SV15 = OGIC Control Equation Variable SV16 SV16 = OGIC Control Equation Counter Variable Input Equations (see Figure 7.25) OGIC [Note: available on the SEL-351R-2 only] Counter Reset Equation SC1R SC1R = OGIC Counter Increment Equation SC1I SC1I = OGIC...
Page 395 ETTINGS HEET Page 17 of 28 SEL-351R R OR THE ECLOSER ONTROL Date SET L) OGIC ONTROL QUATION ETTINGS ERIAL OMMAND Recloser Control Output Equations (see Figure 7.30) Recloser Trip via control cable RCTR= Recloser Close via control cable RCCL= Output Contact Equations (see Figure 7.27)
Page 396 ONTROL QUATION ETTINGS ERIAL OMMAND Display Point Equations (see Rotating Default Display in Sections 7 and 11) [Note: DP9 through DP16 for the SEL-351R-2 only] Display Point DP1 DP1 = Display Point DP2 DP2 = Display Point DP3 DP3 =...
Page 397 ETTINGS HEET Page 19 of 28 SEL-351R R OR THE ECLOSER ONTROL Date SET L) OGIC ONTROL QUATION ETTINGS ERIAL OMMAND ™ Transmit Equations (only available in firmware versions 1 and greater) IRRORED (see Appendix I) Channel A, transmit bit 1...
Page 398 ETTINGS HEET Page 20 of 28 SEL-351R R OR THE ECLOSER ONTROL Date SET G LOBAL ETTINGS ERIAL OMMAND RONT ANEL Settings Group Change Delay (see Multiple Setting Groups in Section 7) Group change delay (0.00–16000.00 cycles in 0.25-cycle steps)
Page 399 (Set the following PHANTV setting when preceding setting 3PVOLT = N) Phantom voltages from (VA,VB,VC,VAB,VBC,VCA,OFF) PHANTV= Note: available on the SEL-351R-2 only # of EZ settings groups enabled (0–6) [see SET EZ and SET FZ Commands (Change EZ Settings) in Section 10]...
Page 400 ETTINGS HEET Page 22 of 28 SEL-351R R OR THE ECLOSER ONTROL Date SET G LOBAL ETTINGS ERIAL OMMAND RONT ANEL Wake-up port baud rate (1200–38400) ABAUD = Wake-up message (4 characters: 0–9, A–Z, - , / , . , space)
Page 401 ETTINGS HEET Page 23 of 28 SEL-351R R OR THE ECLOSER ONTROL Date SET R) EQUENTIAL VENTS ECORDER AND ROFILE ETTINGS ERIAL OMMAND Sequential Events Recorder settings are comprised of three trigger lists. Each trigger list can include up to 24 Relay Word bits delimited by spaces or commas. Enter NA to remove a list of these Relay Word bit settings.
Page 402 Enter NA to null a label. Local Bit Labels (see Tables 7.1 and 7.2) [Note: LB9 through LB16 for the SEL-351R-2 only] Local Bit LB1 Name (14 characters) NLB1 =...
Page 403 ETTINGS HEET Page 25 of 28 SEL-351R R OR THE ECLOSER ONTROL Date SET T) ABEL ETTINGS ERIAL OMMAND Local Bit LB8 Name (14 characters) NLB8 = Clear Local Bit LB8 Label (7 characters) CLB8 = Set Local Bit LB8 Label (7 characters)
Page 404 Pulse Local Bit LB16 Label (7 characters) PLB16 = Display Point Labels (see Rotating Default Display in Sections 7 and 11) [Note: DP9 through DP16 for the SEL-351R-2 only] Display if DP1 = logical 1 (16 characters) DP1_1 = Display if DP1 = logical 0 (16 characters)
Page 405 ETTINGS HEET Page 27 of 28 SEL-351R R OR THE ECLOSER ONTROL Date SET T) ABEL ETTINGS ERIAL OMMAND Display if DP13 = logical 1 (16 characters) DP13_1 = Display if DP13 = logical 0 (16 characters) DP13_0 = Display if DP14 = logical 1 (16 characters)
Page 406 (EIA-485) or a port configured for SEL Distributed Port Switch Protocol. Set FASTOP = Y to enable binary Fast Operate messages at the serial port. Set FASTOP = N to block binary Fast Operate messages. Refer to Appendix D for the description of the SEL-351R Relay Fast Operate commands.
Page 407 SEL-351R Recloser Control to Computer ................. 10-3 SEL-351R Recloser Control to Modem ................10-4 SEL-351R Recloser Control to SEL-PRTU............... 10-5 SEL-351R Recloser Control to SEL-2020, SEL-2030, or SEL-2100........ 10-5 SEL-351R Recloser Control to SEL-DTA2............... 10-5 Communications Protocol......................10-6 Hardware Protocol......................10-6 Software Protocols ......................
Page 408 Table 10.4: Serial Port Automatic Messages..................10-9 Table 10.5: Serial Port Command Summary ..................10-12 Table 10.6: SEL-351R Recloser Control Relay Word and Its Correspondence to TAR Command ... 10-38 Table 10.7: SEL-351R Recloser Control Remote Bit Control Subcommands........10-47 FIGURES Figure 10.1: DB-9 Connector Pinout for EIA-232 Serial Ports .............
Page 409: Section 10: Serial Port Communications And Commands
SEL-351R Recloser Control) or the front-panel SET pushbutton. Wake-Up Port Default Settings The wake-up port on the side panel is used to wake-up the SEL-351R by remote means (e.g., radio), after it puts itself to sleep to conserve battery energy during a long outage. Two global settings are made for the wake-up port with the SET G command (Access Level 2 command;...
Page 410: Irig-B Time Code
SEL-351R Serial Port 2 to synchronize the recloser control’s built-in clock to a synchronized master clock. This is handled adeptly by connecting Serial Port 2 of the SEL-351R to an SEL-2020 Communications Processor with Cable C273A (see cable diagrams that follow in this section).
Page 411: Sel-351R Recloser Control To Computer
The following cable diagrams show several types of EIA-232 serial communications cables that you can use to connect the SEL-351R to other devices. The male/female references in the cable diagrams refer to the cable connectors, not the device they are connected to (which would be the opposite gender).
Page 412: Sel-351R Recloser Control To Modem
2 TXD GND 9 1 GND CTS 8 4 RTS 5 CTS 6 DSR 8 DCD 20 DTR SEL-351R Recloser Control to Modem Cable C222 (externally powered modem) SEL-351R **DCE Device 9-Pin Male 25-Pin Male “D” Subconnector “D” Subconnector GND 5...
Page 413 2 RXD RXD 4 3 TXD CTS 5 7 RTS +12 7 8 CTS GND 9 9 GND SEL-351R Recloser Control to SEL-2020, SEL-2030, or SEL-2100 Cable C273A SEL-2020 SEL-351R 9-Pin Male 9-Pin Male “D” Subconnector “D” Subconnector RXD 2...
Page 414: Communications Protocol
If RTSCTS = N, the SEL-351R permanently asserts the RTS line. If RTSCTS = Y, the SEL-351R deasserts RTS when it is unable to receive characters. If RTSCTS = Y, the SEL-351R does not send characters until the CTS input is asserted. Software Protocols The SEL-351R provides standard SEL protocols: SEL ASCII, SEL Distributed Port Switch Protocol (LMD), SEL Fast Meter, and SEL Compressed ASCII.
Page 415: Sel Ascii Protocol
XOFF is received and may resume when the serial port sends XON. 4. You can use the XON/XOFF protocol to control the SEL-351R during data transmission. When the serial port receives XOFF during transmission, it pauses until it receives an XON character.
Page 416: Sel Distributed Port Switch Protocol (Lmd)
The protocol is described in Appendix D: Configuration, Fast Meter, and Fast Operate Commands. There are no settings required to implement or control this protocol. It is available on any SEL-351R port that is set for SEL or LMD protocol. SEL Compressed ASCII Protocol SEL Compressed ASCII protocol provides compressed versions of some of the recloser control ASCII commands.
Page 417 When the serial port AUTO setting is DTA, the SEL-351R is compatible with the SEL-DTA2 on that port. The MET and MET D command responses are modified to comply with the DTA2 data format for that port. Table 10.4: Serial Port Automatic Messages...
Page 418 Enter the ACC or the EZA command at the Access Level 0 prompt: =ACC <ENTER> =EZA<ENTER> If passwords are enabled, the SEL-351R prompts you for the Level 1 or Level E passwords, respectively. Access Level 1 When the recloser control is in Access Level 1, the control sends the following prompt: =>...
Page 419 Access Level E (EZ) When the SEL-351R is in Access Level E, the control sends the prompt: =+> Commands BTT through SET FZ in Table 10.5 are available from Access Level E. Access Level E is intended to allow operators, testing, and protection personnel to make EZ level setting changes and check and test the battery system.
Page 420 Display active setting group number GROUP => Event summaries/histories EVENTS => Synchronize to IRIG-B => Load profile report => Metering data METER => Quit access level => Sequential Events Report 10-12 Serial Port Communications and Commands Date Code 20020215 SEL-351R Instruction Manual...
Page 421 The recloser control responds with “Invalid Access Level” if a command is entered from an access level lower than the specified access level for the command. If the command you entered does not match any of the commands in the SEL-351R command set shown in Table 10.5, the control responds:...
Page 422 RECLOSER R1: This is the Recloser ID, RID, setting (the control is shipped with the default setting RID = RECLOSER R1; see Identifier Labels in Section 9: Setting the SEL-351R Recloser Control). FEEDER 2101: This is the Terminal ID, TID, setting (the control is shipped with the default setting TID = FEEDER 2101;...
Page 423 At the Access Level 0 prompt, enter the ACC command: =ACC <ENTER> Because the Password jumper is in place, the control does not ask for a password; it goes directly to Access Level 1. The SEL-351R responds: RECLOSER R1 Date: 03/05/97 Time: 08:31:10.361...
Page 424 Breaker/Recloser Contact Wear Monitor in Section 8: Breaker/Recloser Monitor, Battery System Monitor, Metering, and Load Profile Functions for further details on the breaker monitor. 10-16 Serial Port Communications and Commands Date Code 20020215 SEL-351R Instruction Manual...
Page 425 <ENTER>. To reverse the order of the COMM records in the report, supply a range of row numbers, with the larger number first, i.e., COMM 40 10 L <ENTER>. To display all the Date Code 20020215 Serial Port Communications and Commands 10-17 SEL-351R Instruction Manual...
Page 426: Dat Command (View/Change Date)
DATE_F is set to YMD, enter DATE yy/mm/dd <ENTER>. To set the date to June 1, 1997, enter: =>DATE 6/1/97 <ENTER> 6/1/97 => You can separate the month, day, and year parameters with spaces, commas, slashes, colons, and semicolons. 10-18 Serial Port Communications and Commands Date Code 20020215 SEL-351R Instruction Manual...
Page 427: Eve Command (Event Reports)
The fault locator function influences information in the EVENT and LOCAT columns. If the fault locator is enabled (Access Level 2 SET command enable setting EFLOC = Y), the fault Date Code 20020215 Serial Port Communications and Commands 10-19 SEL-351R Instruction Manual...
Page 428 For more information on front-panel target LEDs, see Front-Panel Status and Trip Target LEDs in Section 1: Factory-Set Logic. For more information on event reports, see Section 12: Standard Event Reports and SER. 10-20 Serial Port Communications and Commands Date Code 20020215 SEL-351R Instruction Manual...
Page 429: Iri Command (Synchronize To Irig-B Time Code)
IRI Command (Synchronize to IRIG-B Time Code) IRI forces the SEL-351R to read the demodulated IRIG-B time code at the serial port input to force the control to synchronize to IRIG-B. Enter the following command: =>IRI <ENTER> If the SEL-351R successfully synchronizes to IRIG, it sends the following header and access...
Page 430: Met K-Instantaneous Metering
A-phase current. The angles range from –179.99 to 180.00 degrees. If phantom voltages are enabled through the SET F or SET G commands on an SEL-351R-2, the relay measures only one voltage. In this case the relay copies the measured amplitude to the remaining two voltages and rotates the phase angles to generate balanced voltages.
Page 431: Met X K-Extended Instantaneous Metering
The angles are referenced to the A-phase voltage if it is greater than 13 V secondary; otherwise, the angles are referenced to A-phase current. The angles range from -179.99 to 180.00 degrees. Date Code 20020215 Serial Port Communications and Commands 10-23 SEL-351R Instruction Manual...
Page 432: Met D-Demand Metering
=>MET X k <ENTER> where k is an optional parameter to specify the number of times (1–32767) to repeat the meter display. If k is not specified, the meter report is displayed once. The output from an SEL-351R is shown: =>MET X <ENTER>...
Page 433: Met E-Energy Metering
The output from an SEL-351R with three-phase wye-connected voltage inputs is shown: =>MET D <ENTER> RECLOSER R1 Date: 02/01/97 Time: 15:08:05.615 FEEDER 2101 DEMAND 188.6 186.6 191.8 PEAK 188.6 186.6 191.8 MW3P MVARA MVARB MVARC MVAR3P DEMAND IN PEAK IN...
Page 434: Qui Command (Quit Access Level)
Reset Time Last time the maximum/minimum meter was reset To view maximum/minimum metering values, enter the command: =>MET M <ENTER> The output from an SEL-351R with three-phase wye-connected voltage inputs is shown: =>MET M <ENTER> RECLOSER R1 Date: 02/01/97 Time: 15:16:00.239...
Page 435: Ser Command (Sequential Events Recorder Report)
SHO T Show text label settings for the front panel display points. Also, see Table 9.1 in Section 9: Setting the SEL-351R Recloser Control for settings sheet references. You may append a setting name to each of the commands to specify the first setting to display (e.g., SHO 1 E50P displays the setting Group 1 control settings starting with setting E50P).
Page 436 A to the SHO command (e.g., SHO 1 A). Below are sample SHOWSET commands for the SEL-351R showing all the factory default settings. Settings groups 1 through 6 have the same settings for SHO n, SHO EZ n, and SHO L n.
Page 437 High current lockout - phase (Y/N) High current lockout - ground (Y/N) Cold load pickup scheme (Y/N) Sequence coordination (Y/N) Underfrequency loadshedding (Y/N) Demand meter time constant (5,10,15,30,60 min) =>> Date Code 20020215 Serial Port Communications and Commands 10-29 SEL-351R Instruction Manual...
Page 438 % Battery capacity for sleep (0-100) = 20 Turn on the 12 V power (Y,N) =>> If the relay is an SEL-351R-2, the display includes the phantom voltage setting. =>>SHO FZ <ENTER> Global EZ Settings: System Frequency (50,60 Hz) = 60...
Page 439 If the relay is an SEL-351R-2, the display includes the phantom voltage setting. =>>SHO G <ENTER> Global Settings: = 0.00 NFREQ = 60 PHROT = ABC DATE_F= MDY FP_TO = 15 = 15 IN101D= 0.50 IN102D= 0.50 IN103D= 0.50 IN104D= 0.50 IN105D= 0.50...
Page 440 51N1TC=!SV10 * OCG * LT1 51G1TC=!SV10 * OCG * LT1 51P2TC=!SV8 + SV8 * 50P5 51N2TC=(!SV10 + SV10 * 50G5 + SV10 * 50N5) * LT1 Continued on Next Page 10-32 Serial Port Communications and Commands Date Code 20020215 SEL-351R Instruction Manual...
Page 441 LED16 =67P2T + 67G2T + 67N2T LED17 =81D1T LED18 =79RS LED19 =79CY LED20 =79LO LED24 =50G6 + 50N6 + 51N1 + 51N2 LED25 =67N3T Continued on Next Page Date Code 20020215 Serial Port Communications and Commands 10-33 SEL-351R Instruction Manual...
Page 442 =CLOSE 52A CF 79CY 79LO 79RS SH0 SH1 SH2 SH3 SH4 PB8 59A1 SER3 =TOSLP BCBOK DTFAIL Load Profile settings: (Only available in firmware versions 1 and greater) LDLIST=0 LDAR =>> 10-34 Serial Port Communications and Commands Date Code 20020215 SEL-351R Instruction Manual...
Page 443: Sta Command (Recloser Control Self-Test Status)
=>STA n <ENTER> where n is an optional parameter to specify the number of times (1–32767) to repeat the status display. If n is not specified, the status report is displayed once. A typical SEL-351R status report output appears as shown below: =>STA <ENTER>...
Page 444: Sta Command Row And Column Definitions
“XX:XX”. 5V_PSBC Voltage level in Vdc of the 5-volt supply on the battery charger board. 12V_AUX Voltage level in Vdc of the 12-volt auxiliary port supply. 10-36 Serial Port Communications and Commands Date Code 20020215 SEL-351R Instruction Manual...
Page 445: Tar Command (Display Relay Word Bit Status)
Table 9.3). A Relay Word bit is either at a logical 1 (asserted) or a logical 0 (deasserted). Relay Word bits are used in SEL control equations. See Section 9: Setting the SEL-351R Recloser Control OGIC ® and Appendix G: Setting SEL Control Equations.
Page 446 Table 10.6: SEL-351R Recloser Control Relay Word and Its Correspondence to TAR Command TAR 0 LED10 LED11 LED12 LED13 LED14 LED15 LED16 LED 17 (Front-Panel (EN) (BATTERY (HOT LINE (TRIP) (FAST (HIGH (81) LEDs) SUPPLY) PROBLEM) TAG) CURVE) CURRENT) TAR 1...
Page 447 LT14 LT15 LT16 TAR 60 elements only valid in firmware versions 1 or greater. IRRORED Only available in SEL-351R-2 Relay versions or greater. Command TAR SH1 10 is executed in the following example: =>TAR SH1 10 <ENTER> 79RS 79CY 79LO...
Page 448: Tim Command (View/Change Time)
The command format is: BTT x where: x is blank or “NOW”. 10-40 Serial Port Communications and Commands Date Code 20020215 SEL-351R Instruction Manual...
Page 449 Each period is displayed at about one second intervals as the control times through the rest. See the Battery System Monitor subsection in Section 8: Breaker/Recloser Monitor, Battery System Monitor, Metering, and Load Profile Functions. Date Code 20020215 Serial Port Communications and Commands 10-41 SEL-351R Instruction Manual...
Page 450: Set Ez And Set Fz Commands (Change Ez Settings)
Use the BRE W command to preload breaker/recloser contact wear. For example, to preload the breaker/recloser wear to 25 percent, 28 percent, and 24 percent for the respective phases, issue the following command. 10-42 Serial Port Communications and Commands Date Code 20020215 SEL-351R Instruction Manual...
Page 451 0.8 IB= 0.9 IC= 1.1 kA Percent wear: A= 8 B= 7 C= A-phase Trips= B-phase Trips= C-phase Trips= EF/G Trips= SEF Trips= LAST RESET 12/27/98 15:32:59 ==> Date Code 20020215 Serial Port Communications and Commands 10-43 SEL-351R Instruction Manual...
Page 452: Clo Command (Close Breaker)
Figure 7.30) contact to close a recloser. See the Close Logic subsection in Section 6: Close and Reclose Logic for more information concerning Relay Word bit CC and its recommended use. 10-44 Serial Port Communications and Commands Date Code 20020215 SEL-351R Instruction Manual...
Page 453: Gro N Command (Change Active Setting Group)
Active Group = 2 ==> The SEL-351R switches to Group 2 and pulses the ALARM contact. The control automatically outputs the Group Switch Report on all ports with the serial port setting AUTO = Y. An example Group Switch Report is shown below: ==>...
Page 454: Ope Command (Open Breaker)
Typing N <ENTER> after either of the above prompts will abort the command. The OPE command is supervised by the main board Breaker jumper (see Table 2.4 and Table 2.5). If the Breaker jumper is not in place (Breaker jumper = OFF), the SEL-351R does not execute the OPE command and responds:...
Page 455: Access Level 2 Commands
The CON command is a two-step command that allows you to control Relay Word bits RB1 through RB8 (RB1 through RB16 in the SEL-351R-2). See Row 26 and Row 59 in Table 9.4. At the Access Level 2 prompt, type CON, a space, and the number of the remote bit you wish to control, 1–8 (1–16 in the SEL-351R-2).
Page 456: Loo Command (Loop Back)
‘-’, and ‘.’. Upper- and lower-case letters are treated as different characters. Strong passwords consist of six characters, with at least one special character or digit and mixed case sensitivity, 10-48 Serial Port Communications and Commands Date Code 20020215 SEL-351R Instruction Manual...
Page 457: Set Command (Change Settings)
The SET EZ n and SET FZ commands are available from Access Level E (EZ), too. See Table 9.1 for settings sheet references. See subsection Settings Changes via the Serial Port in Section 9: Setting the SEL-351R Recloser Control for more setting command information. Date Code 20020215...
Page 458: Sta C Command (Status Clear Command)
Line four shows the serial communications protocol (Standard or DNP). The fifth line shows any other installed options available. The sixth line shows the status of the SEL bootstrap BOOT program. 10-50 Serial Port Communications and Commands Date Code 20020215 SEL-351R Instruction Manual...
Page 459 A typical VER command response is shown below: =>>VER <ENTER> FID=SEL351R-R101-V0-D980415 0351R-0 Wye Integral Battery Charger 1 A Nominal phase current, 0.05 A Nominal neutral current Standard 263D SELboot checksum OK Date Code 20020215 Serial Port Communications and Commands 10-51 SEL-351R Instruction Manual...
Page 461: Sel-351R Recloser Control Command Summary
Entry of dates is dependent on the Date Format setting DATE_F (= MDY or YMD) ® COU k Show the SEL counter values. Enter k for repeat count. (SEL-351R-2 only) OGIC Show date. DAT m/d/y Enter date in this manner if Date Format setting DATE_F = MDY.
Page 462 Change EZ recloser control settings for settings group n (n = 1–6). EZ recloser control settings override and change a number of the “regular” settings made with the SET n command (Access Level 2). Page 2 of 4 SEL-351R Command Summary Date Code 20020215 SEL-351R Instruction Manual...
Page 463 Access Level 2. The screen prompt is: =>> CON n Control Relay Word bit RBn, Remote Bit n where n = 1–8 (n = 1–16 in the SEL-351R-2). Execute CON n and the control responds: CONTROL RBn. Then reply with one of the...
Page 464 Skips to next setting section. END <ENTER> Exits setting editing session, then prompts user to save settings. Ctrl - X Aborts setting editing session without saving changes. Page 4 of 4 SEL-351R Command Summary Date Code 20020215 SEL-351R Instruction Manual...
Page 465 DETAILS ................. 11-1 Introduction..........................11-1 Functions Unique to the Front-Panel Interface................11-1 Reclosing Relay Shot Counter Screen ................11-1 SEL-351R Recloser Control Shot Counter Screen Operation (with factory settings)....................... 11-2 Extra Local Control......................11-3 View Extra Local Control (with factory settings)............11-4 Operate Extra Local Control (example settings)............
Page 467 These text label settings are set with the SET T command or viewed with the SHOWSET T command via the serial port [see Section 9: Setting the SEL-351R Recloser Control and SHO Command (Show/View Settings) in Section 10: Serial Port Communications and Commands].
Page 468 SEL-351R recloses the recloser. The shot counter screen shows the incremented shot counter: SET RECLOSURES=3 RECLOSE COUNT =2 If the SEL-351R trips, recloses, then trips again, the SEL-351R goes to the lockout state (front- panel LOCKOUT LED illuminates). The shot counter screen then appears as: SET RECLOSURES=3 RECLOSE COUNT =3...
Page 469 If the recloser is closed, the reset timer times out (79RSLD = 600), the SEL-351R goes to the reset state (front-panel LOCKOUT LED extinguishes and RESET LED illuminates), and the shot counter returns to 0. The shot counter screen appears as:...
Page 470 These text label settings are set with the SET T command or viewed with the SHO T command via the serial port [see Section 9: Setting the SEL-351R Recloser Control and SHO Command (Show/View Settings) in Section 10: Serial Port Communications and Commands]. See Local Control Switches in Section 7: Inputs, Outputs, Timers, and Other Control Logic for more information on local control.
Page 471 TRIP position for one processing interval (1/4 cycle; long enough to assert the correspond- ing local bit LB3 to logical 1). and then returns to the: RETURN position (local bit LB3 deasserts to logical 0 again). Date Code 20020215 Additional Front-Panel Interface Details 11-5 SEL-351R Instruction Manual...
Page 472 See Drive-to-Lockout and Drive-to-Last Shot Settings (79DTL and 79DLS, respectively) in Section 6: Close and Reclose Logic for more information on setting 79DTL. 11-6 Additional Front-Panel Interface Details Date Code 20020215 SEL-351R Instruction Manual...
Page 473 The channel IA, IB, IC, and IN current SCHWEITZER ENGINEERING LABORATORIES values (in A primary) display continually if PULLMAN WASHINGTON USA no local control is operational (i.e., no SEL-351R RECLOSER CONTROL corresponding switch position label settings were made) and no display point labels are IA=50 IB=50 enabled for display.
Page 474 = logical 0 Press CNTRL for DP2_0 = 79 DISABLED Extra Control SCHWEITZER ENGINEERING LABORATORIES PULLMAN WASHINGTON USA DP4_1 = BREAKER CLOSED SEL-351R RECLOSER CONTROL DP4 = IN101 = logical 0 79 DISABLED DP4_0 = BREAKER OPEN BREAKER OPEN SERIAL PORT F DWG.
Page 475 Display point label settings are set with the SET T command or viewed with the SHO T command via the serial port [see Section 9: Setting the SEL-351R Recloser Control and SHO Command (Show/View Settings) in Section 10: Serial Port Communications and Commands].
Page 477 Sampled Current Waveform..................12-28 Figure 12.4: Derivation of Phasor RMS Current Values From Event Report Current Values .... 12-29 Figure 12.5: Example Sequential Events Recorder (SER) Event Report ..........12-30 Date Code 20020215 Standard Event Reports and SER SEL-351R Instruction Manual...
Page 479 Set the event report length with the Access Level 2 global (SET G) LER setting and the prefault length with the PRE setting. See the SET G command in Table 9.1 and corresponding Settings Sheet 20 of 28 in Section 9: Setting the SEL-351R Recloser Control for instructions on setting the LER and PRE settings.
Page 480 ER is set to trigger standard event reports for conditions other than trip conditions. When the ER function goes from logical 0 to logical 1, it generates an event report if the SEL-351R is not already generating a report that encompasses the new transition. The factory default ER...
Page 481 See Section 10: Serial Port Communications and Commands and the Pushbutton Primary Functions subsection (CNTRL pushbutton) in the Front-Panel Interface section of the SEL-351R Quick-Start Installation and User’s Guide for more information on the TRI and PUL commands. Standard Event Report Summary Each time the control generates a standard event report, it also generates a corresponding event summary (see Figure 12.1).
Page 482 The event type designations AG through CAG in Table 12.1 only are entered in the “Event:” field if the fault locator operates successfully. If the fault locator does not operate successfully, just TRIP or ER is displayed. 12-4 Standard Event Reports and SER Date Code 20020215 SEL-351R Instruction Manual...
Page 483 (Y,N)” must be set to Y (yes), which forces Access Level 2 global setting, 3PVOLT, (three-phase voltages connected) to Y (yes). See the SET command in Table 9.1 and corresponding Settings Sheet 1 of 28 in Section 9: Setting the SEL-351R Recloser Control for information on the line parameter settings.
Page 484 “Invalid Event” Compressed ASCII Event Reports The SEL-351R provides compressed ASCII event reports to facilitate event report storage and display. The SEL-2020 Communications Processor and the SEL-5601 Analytic Assistant software take advantage of the compressed ASCII format. Use the EVE C command or CEVENT command to display compressed ASCII event reports.
Page 485 Filtered and Unfiltered Event Reports The SEL-351R samples the basic power system measurands (ac voltage, ac current, and optoisolated inputs) 16 times per power system cycle. The control filters the measurands to remove transient signals, operates on the filtered values, and reports them in the event report.
Page 486 Output, Input, Protection, and Control Columns Table 12.3 summarizes the event report output, input, protection, and control columns. See Tables 9.3 and 9.4 in Section 9: Setting the SEL-351R Recloser Control for more information on Relay Word bits shown in Table 12.3.
Page 487 Both IN105 and IN106 asserted. In BC PINBD, PINC Control cable pin BD input (PINBD) (see Figure 7.30) asserted. Control cable pin C input (PINC) asserted. Both PINBD and PINC asserted. Date Code 20020215 Standard Event Reports and SER 12-9 SEL-351R Instruction Manual...
Page 488 50CA1, 50CA2, 50CA3, or 50CA4 picked up. 50AB_ and 50CA_ picked up. 50AB_ and 50BC_ picked up. 50BC_ and 50CA_ picked up. 50AB_, 50BC_, and 50CA_ picked 12-10 Standard Event Reports and SER Date Code 20020215 SEL-351R Instruction Manual...
Page 489 Level 1 instantaneous element 67_1 picked up. DM PQ PDEM, QDEM Phase demand ammeter element PDEM picked up. Negative-sequence demand ammeter element QDEM picked up. Both PDEM and QDEM picked up. Date Code 20020215 Standard Event Reports and SER 12-11 SEL-351R Instruction Manual...
Page 490 59C1 or 59C2 picked up. 59A_ and 59B_ elements picked up. 59B_ and 59C_ elements picked up. 59C_ and 59A_ elements picked up. 59A_, 59B_, and 59C_ elements picked up. 12-12 Standard Event Reports and SER Date Code 20020215 SEL-351R Instruction Manual...
Page 491 Channel VS voltage window element 59VS picked up (used in synchronism check). Both 59VP and 59VS picked up. 25 SF Slip frequency element SF picked up (used in synchronism check). Date Code 20020215 Standard Event Reports and SER 12-13 SEL-351R Instruction Manual...
Page 492 SH0, SH1, SH2 Reclosing function disabled. SH3, SH4 shot = 0 (SH0). shot = 1 (SH1). shot = 2 (SH2). shot = 3 (SH3). shot = 4 (SH4). 12-14 Standard Event Reports and SER Date Code 20020215 SEL-351R Instruction Manual...
Page 493 Latch bit LT1 asserted. Latch bit LT2 asserted. Both LT1 and LT2 asserted. Ltch 34 LT3, LT4 Latch bit LT3 asserted. Latch bit LT4 asserted. Both LT3 and LT4 asserted. Date Code 20020215 Standard Event Reports and SER 12-15 SEL-351R Instruction Manual...
Page 494 Received input 2 asserted (DCUB logic). Permissive Trip Received input 1 asserted and Permissive Trip Received input 2 asserted (DCUB logic). Z3RB Z3RB Zone 3 Reverse Block element asserted. 12-16 Standard Event Reports and SER Date Code 20020215 SEL-351R Instruction Manual...
Page 495 Transmit M 1 channel IRRORED A deasserted and Transmit 2 channel A IRRORED asserted. Transmit M 1 channel IRRORED A asserted and Transmit M IRRORED 2 channel A asserted. Date Code 20020215 Standard Event Reports and SER 12-17 SEL-351R Instruction Manual...
Page 496 1 channel A IRRORED deasserted and Receive M IRRORED 2 channel A asserted. Receive M 1 channel A IRRORED asserted and Receive M IRRORED 2 channel A asserted. 12-18 Standard Event Reports and SER Date Code 20020215 SEL-351R Instruction Manual...
Page 497 Receive channel A OK element deasserted and Receive channel B OK element asserted. Receive channel A OK element asserted and Receive channel B OK element asserted. Date Code 20020215 Standard Event Reports and SER 12-19 SEL-351R Instruction Manual...
Page 498 Aux. 1 pushbutton output Aux. 2 pushbutton output Close pushbutton output Trip pushbutton output **Output contacts can be A or B type contacts (see Table 2.1 and Figure 7.27). 12-20 Standard Event Reports and SER Date Code 20020215 SEL-351R Instruction Manual...
Page 499 R command in Table 9.1 and corresponding Settings Sheet 20 of 28 at the end of Section 9: Setting the SEL-351R Recloser Control. Use either spaces or commas to delimit the elements. For example, if you enter setting SER1 as:...
Page 500 (top) of the report and the newest row at the end (bottom) of the report, for the given date. Chronological progression through the report is down the page and in descending row number. 12-22 Standard Event Reports and SER Date Code 20020215 SEL-351R Instruction Manual...
Page 501 If the “trigger” row (>) and the maximum phase current row (*) are the same row, the * symbol takes precedence. Date Code 20020215 Standard Event Reports and SER 12-23 SEL-351R Instruction Manual...
Page 502 -5.8 -0.0 60.01 ..T ...Bb -3.4 -3.4 0.0 60.01 ..T ...Bb -5.8 -0.0 0.0 60.01 ..T ...Bb [12] -6.7 -0.0 60.01 ..T ...Bb -5.8 0.0 60.01 ..T ...Bb 12-24 Standard Event Reports and SER Date Code 20020215 SEL-351R Instruction Manual...
Page 503 1r..1r...... *... C.0 ...b..7 ....T..1r...... *... C.0 ...b..7 ....T....... *... C.0 ...b..7 ....Date Code 20020215 Standard Event Reports and SER 12-25 SEL-351R Instruction Manual...
Page 504 .................................... 12-26 Standard Event Reports and SER Date Code 20020215 SEL-351R Instruction Manual...
Page 505 Figure 12.2. Figure 12.3 shows how the event report ac current column data relates to the actual sampled waveform and RMS values. Figure 12.4 shows how the event report current column data can be converted to phasor RMS values. Voltages are processed similarly. Date Code 20020215 Standard Event Reports and SER 12-27 SEL-351R Instruction Manual...
Page 506 In Figure 12.3, note that any two rows of current data from the event report in Figure 12.2, 1/4 cycle apart, can be used to calculate RMS current values. 12-28 Standard Event Reports and SER Date Code 20020215 SEL-351R Instruction Manual...
Page 507 RMS current values. In Figure 12.4, at the present sample, the phasor RMS current value is: IA = 991 A ∠-33.7° Date Code 20020215 Standard Event Reports and SER 12-29 SEL-351R Instruction Manual...
Page 508 # column numbers in Figure 12.5. The SER event report in Figure 12.5 contains records of events that occurred before and after the standard event report in Figure 12.2. 12-30 Standard Event Reports and SER Date Code 20020215 SEL-351R Instruction Manual...
Page 509 (= 300 cycles) 4, 3 Reclose control increments reclose shot counter from 0 to 1 (SH1 asserted, SH0 deasserted). 2, 1 Close output deasserts as recloser closes. Date Code 20020215 Standard Event Reports and SER 12-31 SEL-351R Instruction Manual...
Page 511 Inspection Procedure......................13-8 Troubleshooting Procedure ....................13-8 All Front-Panel LEDs Dark..................13-8 Cannot See Characters on LCD Screen..............13-9 SEL-351R Does Not Respond to Commands From Device Connected to Serial Port........................13-9 SEL-351R Does Not Respond to Faults..............13-9 Calibration..........................13-9 Factory Assistance ........................
Page 513: Testing And Troubleshooting
This helps ensure the accuracy and correctness of the control settings when you issue them. Refer to the Testing section in the SEL-351R Quick-Start Installation and User’s Guide for test procedures using the Type MET Electronic Recloser Control Tester.
Page 514: Maintenance Testing
SEL-351R current and voltage inputs are of the proper magnitude and phase rotation. Brief fault tests ensure that the SEL-351R settings are correct. It is not necessary to test every element, timer, and function in these tests.
Page 515: Testing Methods And Tools
Because SEL-351R Recloser Controls are microprocessor-based, their operating characteristics do not change over time. Time-overcurrent operating times are affected only by the SEL-351R settings and applied signals. It is not necessary to verify operating characteristics as part of maintenance checks.
Page 516: Test Methods
LCD. The bottom row of the LCD displays all elements asserted in Relay Word Row 6. The SEL-351R maps the state of the elements in Relay Word Row 6 on the bottom row of LEDs. The 51P1T element state is reflected on the LED labeled RS. See Table 9.3 for the correspondence between the Relay Word elements and the TAR command.
Page 517: Testing Via Sequential Events Recorder
SER report. Use this method to verify timing associated with time-overcurrent elements, reclosing relay operation, etc. Do not forget to reenter the correct SEL-351R settings when you are ready to place the SEL-351R in service.
Page 518 Failure Latched Performs a read/write test on system RAM every 60 seconds. Failure checksum Latched Performs a checksum test on the SEL-351R program memory every 10 seconds. Failure Latched Validates proper number of conversions each 1/4 cycle. 13-6 Testing and Troubleshooting...
Page 519 SEL-351R settings every 10 seconds. The following two self-tests are performed by dedicated circuitry in the microprocessor and the SEL-351R main board. Failures in these tests shut down the microprocessor and are not shown in the STATUS report. Micro-...
Page 520: Sel-351R Troubleshooting
SEL-351R T ROUBLESHOOTING Inspection Procedure Complete the following procedure before disturbing the SEL-351R. After you finish the inspec- tion, proceed to the Troubleshooting Procedure. 1. Measure and record the AC power supply voltage at the power input terminals’ positions 17 and 20 on the terminal block.
Page 521: Cannot See Characters On Lcd Screen
3. CT or PT input wiring error. 4. Analog input cable between transformer secondary and main board loose or defective. 5. Failed SEL-351R self-test. ALIBRATION The SEL-351R is factory-calibrated. If you suspect that the control is out of calibration, please contact the factory. ACTORY SSISTANCE We appreciate your interest in SEL products and services.
Page 523 OPERATE COMMANDS..........D-1 Introduction..........................D-1 Message Lists..........................D-1 Binary Message List......................D-1 ASCII Configuration Message List..................D-1 Message Definitions........................D-2 A5C0 Relay Definition Block ....................D-2 A5C1 Fast Meter Configuration Block ................D-2 A5D1 Fast Meter Data Block....................D-4 Date Code 20020215 Appendices Table of Contents SEL-351R Instruction Manual...
Page 524 BNA Message ........................D-12 APPENDIX E: COMPRESSED ASCII COMMANDS .......E-1 Introduction..........................E-1 CASCII Command—General Format..................E-1 CASCII Command—SEL-351R....................E-2 CSTATUS Command—SEL-351R ..................... E-4 CHISTORY Command—SEL-351R ................... E-4 CEVENT Command—SEL-351R ....................E-5 APPENDIX F: SETTING NEGATIVE-SEQUENCE OVERCURRENT ELEMENTS ..............F-1 Setting Negative-Sequence Definite-Time Overcurrent Elements..........F-1 Setting Negative-Sequence Time-Overcurrent Elements ............
Page 525 Example of NOT Operator ! Applied to Multiple Elements (within parentheses) ....................G-5 Control Equation Rising Edge Operator / ............G-5 OGIC Control Equation Falling Edge Operator \ ...........G-7 OGIC Control Equation Analog Compares (SEL-351R-2 only)........G-7 OGIC Control Equation Operation Example—Tripping..........G-8 OGIC Analysis of SEL Control Equation Trip Setting TR..........G-8 OGIC Set an Output Contact for Tripping................G-10...
Page 526 Table G.2: Comparison Operator Descriptions ..................G-8 Table G.3: Processing Order of Relay Elements and Logic (top to bottom)........G-12 Table H.1: Data Access Methods......................H-4 Table H.2: SEL-351R DNP Object Table....................H-7 Table H.3: SEL-351R DNP Data Map....................H-11 FIGURES Figure B.1: Establishing a Connection ....................B-3 Figure B.2: Determining the Computer Serial Port ................B-3...
Page 527 APPENDIX A: FIRMWARE VERSIONS This manual covers the SEL-351R Recloser Control that contains firmware bearing the following part numbers and revision numbers (most recent firmware listed at top): Firmware Part/Revision No. Description of Firmware SEL-351R-2-R300-V0-Z003003-D20020131 This firmware differs from previous versions as follows: −...
Page 528 SUPPLY LED) to LED= !DISCHG SEL-351R-R108-V0-Z001001-D20010501 This firmware differs from previous versions as follows: − Prevented the SEL-351R from setting the device trouble bit within the DNP response header when status warnings and failures occur. − Internal changes to support Flash memory revision.
Page 529 TMB1A) no longer appear in TAR command responses (see Section 10: Serial Port Communications and Commands or DNA Command Responses in Appendix D if the SEL-351R is not ordered with the M IRRORED communications option (firmware versions 1 or greater).
Page 530 − Changed setting range for kA Interrupted set points KASP1, KASP2, and KASP3 (new lower limit is 0.10 kA and new setting increment is 0.01 kA). − Changed the setting range of DNP setting UTIMEO to 1–50 seconds. Firmware Versions Date Code 20020215 SEL-351R Instruction Manual...
Page 531 (for certain settings/operator control modes). − Fixed problem of fast curves not being enabled if auto-reclosing is nonexistent (see Figures 1.6 and 1.7 in Section 1: Factory-Set Logic). SEL-351R-R102-V0 Original Firmware Release. Date Code 20020215 Firmware Versions SEL-351R Instruction Manual...
Page 532 To find the firmware revision number in your SEL-351R, view the status report using the serial port STATUS command or the front-panel STATUS pushbutton. The status report displays the FID label with the Part/Revision number in bold: FID=SEL-351R-R107-V0-Z001001-D20010501 The Firmware revision number follows the “R” and the release date follows the “D”.
Page 533: Appendix B: Sel-300 Series Relays Firmware
• Terminal emulation software that supports the XMODEM/CRC protocol (these ® ® instructions use HyperTerminal from a Microsoft Windows operating system) • Serial communications cable (SEL-C234A or equivalent) • Disk containing firmware upgrade file Date Code 20020215 Firmware Upgrade Instructions SEL-351R Instruction Manual...
Page 534: Upgrade Procedure
If there is no identification label, connect the cable to any computer serial port. Note that you may later have to change this computer serial port to establish communication between your relay and your computer. Firmware Upgrade Instructions Date Code 20020215 SEL-351R Instruction Manual...
Page 535 RTSCTS setting). If computer settings do not match relay settings, change the computer settings to match relay settings. Figure B.1: Establishing a Connection Figure B.2: Determining the Computer Serial Port Date Code 20020215 Firmware Upgrade Instructions SEL-351R Instruction Manual...
Page 536: Failure To Connect
Perform the following steps to reattempt a connection. Step 1. Terminate communication by pressing the icon illustrating a phone off the hook. Figure B.5: Terminating Communication Firmware Upgrade Instructions Date Code 20020215 SEL-351R Instruction Manual...
Page 537 From the File menu, choose Properties. b. Choose Configure to see a dialog box similar to Figure B.3. Step 4. Change settings in the appropriate list boxes and click OK. Date Code 20020215 Firmware Upgrade Instructions SEL-351R Instruction Manual...
Page 538: Save Settings And Other Data
Step 2. Under the Transfer menu in HyperTerminal, select Capture Text. Step 3. Enter a directory and file name for a text file in which you will record existing relay settings. Firmware Upgrade Instructions Date Code 20020215 SEL-351R Instruction Manual...
Page 539: Start Sel Boot
SEL BOOT Commands Available in SEL BOOT To list the commands available in SEL , use the HELP (HEL) command. The relay BOOT displays a list similar to the following: Date Code 20020215 Firmware Upgrade Instructions SEL-351R Instruction Manual...
Page 540: Set Relay Data Transmission Rate
(Figure B.9). Step 5. Click OK twice. Note that you should not have to reestablish communication; HyperTerminal reestablishes communication automatically the second time you click OK. Step 6. Press <Enter>. Firmware Upgrade Instructions Date Code 20020215 SEL-351R Instruction Manual...
Page 541: Download Existing Firmware
Enter the pathname of a folder on your computer hard drive in which you want to record the existing relay firmware, and select “1K Xmodem” if you have this protocol available on your PC. Otherwise, choose “Xmodem.” Date Code 20020215 Firmware Upgrade Instructions SEL-351R Instruction Manual...
Page 542: Upload New Firmware
Some firmware may be in self-extracting compressed files (files with .exe extensions). If you have firmware in such files, double-click on the file you want from Windows Explorer and select a directory on your local hard drive into which B-10 Firmware Upgrade Instructions Date Code 20020215 SEL-351R Instruction Manual...
Page 543 For Filename, type in the location of your new firmware or use the browse button to select the firmware file (Figure B.13). Step 6. For Protocol, select “1K Xmodem” if you have this protocol available. Otherwise, select “Xmodem.” Date Code 20020215 Firmware Upgrade Instructions B-11 SEL-351R Instruction Manual...
Page 544: Check Relay Self-Tests
If the EN LED is illuminated and the Access Level 0 prompt does not appear, the relay data transmission rate has reverted to the value you recorded in Prepare the Relay on page B-2. B-12 Firmware Upgrade Instructions Date Code 20020215 SEL-351R Instruction Manual...
Page 545: En Led Not Illuminated
As you did earlier in Match Computer Communications Speed to the Relay on page B-8, terminate communication. Step 2. Change communications software settings to 2400 baud, 8 data bits, 1 stop bit. Step 3. Reestablish communication. Date Code 20020215 Firmware Upgrade Instructions B-13 SEL-351R Instruction Manual...
Page 546 Step 11. If any failure codes still appear on the relay display, see the testing and troubleshooting section in your relay instruction manual or contact the factory for assistance. B-14 Firmware Upgrade Instructions Date Code 20020215 SEL-351R Instruction Manual...
Page 547: Verify Calibration, Status, Breaker Wear, And Metering
Note: If an SEL-2020 or SEL-2030 Communications Processor is connected to the relay, re-autoconfigure the SEL-20x0 port. Failure to do so may cause automatic data collection failure if power to the communications processor is cycled. Date Code 20020215 Firmware Upgrade Instructions B-15 SEL-351R Instruction Manual...
Page 549: Appendix C: Sel Distributed Port Switch Protocol
6. Enter the sequence CTRL-X QUIT <CR> before entering the prefix character if all relays in the multidrop network do not have the same prefix setting. Note: You can use the front-panel SET pushbutton to change the port settings to return to SEL protocol. Date Code 20020215 SEL Distributed Port Switch Protocol SEL-351R Instruction Manual...
Page 551: Appendix D: Configuration, Fast Meter, And Fast
ASCII commands can also be accessed by a device that does not interleave the data streams. SEL Application Guide AG95-10, Configuration and Fast Meter Messages, is a comprehensive description of the SEL binary messages. Below is a description of the messages provided in the SEL-351R Recloser Control. ESSAGE ISTS Binary Message List...
Page 552: A5C0 Relay Definition Block
ESSAGE EFINITIONS A5C0 Relay Definition Block In response to the A5C0 request, the SEL-351R sends the following block: Data Description A5C0 Command Length Support two protocols, SEL, M ™, DNP, and LMD IRRORED Support three Fast Meter messages Support three status flag commands...
Page 553 Standard Power Calculations FFFF No Deskew angle FFFF No Rs compensation (-1) FFFF No Xs compensation (-1) IA channel index IB channel index IC channel index VA channel index Date Code 20020215 Configuration, Fast Meter, and Fast Operate Commands SEL-351R Instruction Manual...
Page 554: A5D1 Fast Meter Data Block
VB channel index VC channel index Reserved checksum 1-byte checksum of all preceding bytes A5D1 Fast Meter Data Block In response to the A5D1 request, the SEL-351R sends the following block: Data Description A5D1 Command Length (9C for SEL-351R-2) 1-byte...
Page 555 0000 Scale factor offset in Fast Meter message 50412D000000 Analog channel name (PA-) Analog channel type Scale factor type 0000 Scale factor offset in Fast Meter message Date Code 20020215 Configuration, Fast Meter, and Fast Operate Commands SEL-351R Instruction Manual...
Page 556: A5D2/A5D3 Demand/Peak Demand Fast Meter Message
MVA I, MVB I, MVC I, MV3PI, MWA O, MWB O, MWC O, MW3PO, MVA O, MVB O, MVC O, MV3PO in 8-byte IEEE FPS 8-bytes Time stamp 1-byte Reserved 1-byte 1-byte checksum of all preceding bytes Configuration, Fast Meter, and Fast Operate Commands Date Code 20020215 SEL-351R Instruction Manual...
Page 557: A5B9 Fast Meter Status Acknowledge Message
In response to the A5B9 request, the relay clears the Fast Meter (message A5D1) Status Byte. The SEL-351R Status Byte contains one active bit, STSET (bit 4). The bit is set on power up and on settings changes. If the STSET bit is set, the external device should request the A5C1, A5C2, and A5C3 messages.
Page 558: A5E0 Fast Operate Remote Bit Control
Length 1-byte Operate code: 00–07 clear remote bit RB1–RB8 (00–0F clear remote bit RB1–RB16 for the SEL-351R-2) 20–27 set remote bit RB1–RB8 (20–2F set remote bit RB1–RB16 for the SEL-351R-2) 40–47 pulse remote bit for RB1–RB8 for one processing interval (40–4F pulse remote bit RB1–RB16 for the SEL-351R-2)
Page 559: A5E3 Fast Operate Breaker Control
The relay performs the specified breaker operation if the following conditions are true: 1. Conditions 1-5 defined in the A5E0 message are true. 2. The breaker jumper (JMP6) is in place on the SEL-351R main board. ID Message In response to the ID command, the relay sends the firmware ID (FID), boot firmware ID ®...
Page 560: Dna Message
A5D1 message. The first name is associated with the MSB, the last name with the LSB. These names are listed in the Relay Word Bits table in Section 9: Setting the SEL-351R Recloser Control. The DNA command is available from Access Level 1 and higher.
Page 561 <ETX> is the ETX character (03). the last field in each line (yyyy) is the 4-byte ASCII hex representation of the checksum for the line. "*" indicates an unused bit location. Date Code 20020215 Configuration, Fast Meter, and Fast Operate Commands D-11 SEL-351R Instruction Manual...
Page 562: Bna Message
"yyyy" is the 4-byte ASCII representation of the checksum. "*" indicates an unused bit location. The BNA command is available from Access Level 1 and higher. D-12 Configuration, Fast Meter, and Fast Operate Commands Date Code 20020215 SEL-351R Instruction Manual...
Page 563: Appendix E: Compressed Ascii Commands
APPENDIX E: COMPRESSED ASCII COMMANDS NTRODUCTION The SEL-351R Recloser Control provides compressed ASCII versions of some of the relay’s ASCII commands. The compressed ASCII commands allow an external device to obtain data from the relay, in a format which directly imports into spreadsheet or database programs, and which can be validated with a checksum.
Page 564: Cascii Command-Sel-351R
If a compressed ASCII request is made for data that are not available, (e.g. the history buffer is empty or invalid event request), the relay responds with the following message: <STX>"No Data Available","0668"<CR><ETX> CASCII C —SEL-351R OMMAND Display the SEL-351R compressed ASCII configuration message by sending: CAS <CR> The SEL-351R sends: <STX> "CAS",5,"YYYY"<CR> "CST",1,"YYYY"<CR>...
Page 565 <ETX> YYYY is the 4-byte hex ASCII representation of the checksum. See the CEVENT command for definition of the “Names of elements in the relay word rows separated by spaces” field. Date Code 20020215 Compressed ASCII Commands SEL-351R Instruction Manual...
Page 566: Cstatus Command-Sel-351R
CSTATUS C —SEL-351R OMMAND Display status data in compressed ASCII format by sending: CST <CR> The SEL-351R sends: <STX>"FID","BCBFID","yyyy"<CR> "Relay FID string","Relay Battery Charger Board FID string","yyyy"<CR> "MONTH","DAY","YEAR","HOUR","MIN","SEC","MSEC","yyyy"<CR> xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,yyyy<CR> "IA","IB","IC","IN","VA","VB","VC","VS","MOF","+5V_PS","+5V_REG", "-5V_REG","+12V_PS","-12V_PS","+15V_PS","yyyy"<CR> "xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx", "xxxx","xxxx","xxxx","xxxx","xxxx","yyyy",<CR> "-15V_PS","TEMP","RAM","ROM","A/D","CR_RAM","EEPROM", "IO_BRD","MODE","%CAP","HRS_LFT","5V_PSBC","12V_AUX","VBAT","IBAT","yyyy" "xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","xxxx", "xxxx","xxxx","xxxx","xxxx","xxxx","xxxx","yyyy"<CR><ETX> where: xxxx are the data values corresponding to the first line labels and yyyy is the 4-byte hex ASCII representation of the checksum.
Page 567: Cevent Command-Sel-351R
LOCATION is the fault location. SHOT is the recloser shot counter. TARGETS are the front-panel tripping targets. IA, IB, IC, IN, IG, 3I2 is the fault current. TRIG refers to the trigger record. Date Code 20020215 Compressed ASCII Commands SEL-351R Instruction Manual...
Page 568 Relay Word are “10”. In binary, this evaluates to 00010000. Mapping the labels to the bits yields: Labels 50A1 50B1 50C1 50A2 50B2 50C2 50A3 50B3 Bits In this example, the 50A2 element is asserted (logical 1); all others are deasserted (logical 0). Compressed ASCII Commands Date Code 20020215 SEL-351R Instruction Manual...
Page 569: Appendix F: Setting Negative-Sequence Overcurrent Elements
51QTD, that results in curve times below 3 cycles (see curves in Figures 9.1 through 9.20 in Section 9: Setting the SEL-351R Recloser Control). This is because negative-sequence current can transiently appear when a circuit breaker is closed and balanced load current suddenly appears.
Page 570: Coordinating Negative-Sequence Overcurrent Elements
3I magnitude negative-sequence current. The SEL-351R can be inserted as the feeder relay in this example. Note that the overcurrent element labels in the example are not the same as the labels of the corresponding SEL-351R overcurrent elements.
Page 571: Coordination Guidelines
= Maximum load current through line recloser = 150 A = Feeder relay phase time-overcurrent element 51QF = Feeder relay negative-sequence time-overcurrent element = Line recloser phase time-overcurrent element (phase “slow curve”) Date Code 20020215 Setting Negative-Sequence Overcurrent Elements SEL-351R Instruction Manual...
Page 572: Traditional Phase Coordination
Applying negative-sequence overcurrent element coordination Guidelines 1 to 3 results in the feeder relay “equivalent” phase overcurrent element (51EP) in Figure F.4. Curve for 51F is shown for comparison only. Setting Negative-Sequence Overcurrent Elements Date Code 20020215 SEL-351R Instruction Manual...
Page 573: Convert "Equivalent" Phase Overcurrent Element Settings To Negative-Sequence Overcurrent Element Settings (Guideline 4
Guideline 4. The time dial (lever) and curve type of the element remain the same (if the element is a definite-time element, the time delay remains the same). Date Code 20020215 Setting Negative-Sequence Overcurrent Elements SEL-351R Instruction Manual...
Page 574: Negative-Sequence Overcurrent Element Applied At A Distribution Bus (Guideline 5
It is coordinated with the distribution feeder phase or negative-sequence overcurrent elements and provides more-sensitive and faster phase-to-phase fault backup. Setting Negative-Sequence Overcurrent Elements Date Code 20020215 SEL-351R Instruction Manual...
Page 575: Ground Coordination Concerns
This conference paper gives many good application examples for negative-sequence overcurrent elements. The focus is on the transmission system, where negative-sequence overcurrent elements provide better sensitivity than zero-sequence overcurrent elements in detecting some single-line-to-ground faults. Date Code 20020215 Setting Negative-Sequence Overcurrent Elements SEL-351R Instruction Manual...
Page 577: Appendix G: Setting Sel Ogic Control Equations
Section 9: Setting the OGIC SEL-351R Recloser Control (see also Settings Sheets 13 through 17 in the back of Section 9). See the SHO command (Show/View Settings) in Section 10: Serial Port Communications and Commands for a list of the factory settings shipped with the SEL-351R Recloser Control in a standard relay shipment.
Page 578: Phase Time-Overcurrent Element 51P1T Time-Out Indication
51P1T trip logic (see SEL control equation trip setting TR example later in this OGIC section) 51P1R used in testing (e.g., assign to an output contact for reset indication) ® Setting SEL Control Equations Date Code 20020215 OGIC SEL-351R Instruction Manual...
Page 579: Other Relay Word Bits
OGIC Operator Logic Function rising edge detect falling edge detect parentheses Operators in a SEL control equation setting are processed in the order shown in Table G.1. OGIC ® Date Code 20020215 Setting SEL Control Equations OGIC SEL-351R Instruction Manual...
Page 580: Sel Ogic Control Equation Parentheses Operator
IN1 is deenergized [IN1 = 0 (logical 0)]: 52A = !IN101 = NOT(IN101) = NOT(0) = 1 Thus, the SEL control equation circuit breaker status setting 52A sees a closed circuit OGIC breaker. ® Setting SEL Control Equations Date Code 20020215 OGIC SEL-351R Instruction Manual...
Page 581: Example Of Not Operator ! Applied To Multiple Elements (Within Parentheses
The rising edge operator / is applied to individual Relay Word bits only—not to groups of elements within parentheses. For example, the SEL control equation event report OGIC generation setting uses rising edge operators: ER = /51P1 + /51G1 + /OUT103 ® Date Code 20020215 Setting SEL Control Equations OGIC SEL-351R Instruction Manual...
Page 582 (generated by 51G1 asserting first). The assertion of OUT103 for a breaker failure condition is some appreciable time later and will generate another event report, if the first event report capture has ended when OUT103 asserts. ® Setting SEL Control Equations Date Code 20020215 OGIC SEL-351R Instruction Manual...
Page 583: Sel Ogic Control Equation Falling Edge Operator
Figure G.2: Result of Falling Edge Operator on a Deasserting Underfrequency Element Control Equation Analog Compares (SEL-351R-2 only) OGIC The SEL-351R-2 Relay is capable of interpreting SEL control equations that contain a OGIC special type of element, the Analog Compare. Use these elements in any SEL...
Page 584: Sel Ogic Control Equation Operation Example-Tripping
Analysis of SEL Control Equation Trip Setting TR OGIC Again, the example trip equation is: TR = 51P1T+51G1T+50P1*SH0 The Relay Word bit definitions are: 51P1T phase time-overcurrent element timed out ® Setting SEL Control Equations Date Code 20020215 OGIC SEL-351R Instruction Manual...
Page 585 TR = 51P1T+51G1T+50P1*SH0 = 0 + 1 + 1*0 = 0 + 1 + 0 = 1 and a time-delayed trip results from residual ground time-overcurrent element 51G1T. ® Date Code 20020215 Setting SEL Control Equations OGIC SEL-351R Instruction Manual...
Page 586: Set An Output Contact For Tripping
(e.g., phase time-overcurrent element 51P1T) is subject only to the directional control. See Figure 3.14 in Section 3: Overcurrent, Voltage, Synchronism Check, Frequency, and Power Elements for phase time-overcurrent element 51P1T logic. ® G-10 Setting SEL Control Equations Date Code 20020215 OGIC SEL-351R Instruction Manual...
Page 587: Sel Ogic Control Equation Limitations
OGIC SEL-351R responds with the following message: xxx Elements and yy Edges remain available indicating that “xxx” Relay Word bits can still be used and “yy” rising or falling edge operators can still be applied in the SEL control equations for the particular settings group.
Page 588 27BC1, 27CA1, 27AB2, 27BC2, 27CA2, 59AB1, 59BC1, 59CA1, 59AB2, 59BC2, 59CA2, 59Q1, 59Q2 Frequency Elements 81D1, 81D2, 81D3, 81D4, 81D5, Section 3 81D6, 81D1T, 81D2T, 81D3T, 81D4T, 81D5T, 81D6T ® G-12 Setting SEL Control Equations Date Code 20020215 OGIC SEL-351R Instruction Manual...
Page 589 HTG, HLP, HLG, CLP, RPP, RPG, RPS, SEQC, GTP Breaker Monitor (BKMON) BCWA, BCWB, BCWC, BCW Section 8 counter values (SC1–SC8) Section 7 OGIC (only in the SEL-351R-2) Control Equation SV1–SV16, SV1T–SV16T Section 7 OGIC Variables/Timers (SV1–SV16) ® Date Code 20020215...
Page 590 RCTR, RCCL and Close (RCCL) Targeting (Front-Panel LED) Logic LED1–9, LED11–20, LED24, Section 5 LED25 Display Points (DP1–DP8) (DP1–DP16 Section 7 in the SEL-351R-2) Transmit M TMB1A. . .TMB8A Appendix I IRRORED TMB1B. . .TMB8B Setting Group (SS1–SS6) SG1–SG6 Section 7...
Page 591: Appendix H: Distributed Network Protocol (Dnp) V3.00
Age of oldest event to transmit on (0–60 sec.) UTIMEO Unsolicited confirmation time out (0–50 sec.) The response to the VER command will indicate “DNP” if the SEL-351R Relay has DNP. Date Code 20020215 Distributed Network Protocol (DNP) V3.00 SEL-351R Instruction Manual...
Page 592: Extended Mode Dnp Operation
PREDLY delay. The RTS/CTS handshaking may be completely disabled by setting PREDLY to OFF. In this case, RTS is forced high and CTS is ignored, with only received characters acting Distributed Network Protocol (DNP) V3.00 Date Code 20020215 SEL-351R Instruction Manual...
Page 593: Automatic Dial-Out
SEL-351R begins transmitting the unsolicited event data and asserts Relay word bit DCONN. If setting UNSOL = DIAL, the SEL-351R further checks to see that the CTS serial port line is asserted (e.g., from an external modem), before beginning the transmission of the unsolicited event data.
Page 594 Set CLASSC = to a how often messages are non-zero value, desired to be sent. Set UNSOL = Y, Set NUMEVE and AGEEVE according to how often messages are desired to be sent. Distributed Network Protocol (DNP) V3.00 Date Code 20020215 SEL-351R Instruction Manual...
Page 595: Device Profile
Object Group Request Function Codes Response Function Codes Object Variation Request Qualifiers Response Qualifiers Object Name (optional) Vendor Name: Schweitzer Engineering Laboratories, Inc. Device Name: SEL-351R Highest DNP Level Supported: Device Function: ¨ Master þ Slave For Requests Level 2...
Page 596 þ Binary Input Change With Time ¨ Only non-time-tagged ¨ Binary Input Change With Relative ¨ Configurable to send both, one or the Time ¨ Configurable (attach explanation) other (attach explanation) Distributed Network Protocol (DNP) V3.00 Date Code 20020215 SEL-351R Instruction Manual...
Page 597: Object Table
¨ Point-by-point list attached ¨ Yes þ No Sends Multi-Fragment Responses: In all cases within the device profile that an item is configurable, it is controlled by SEL-351R settings. BJECT ABLE The supported object, function and qualifier code combinations are given by the following object table.
Page 598 32-Bit Counter Change Event with Time 6,7,8 17,28 16-Bit Counter Change Event with Time 6,7,8 17,28 32-Bit Delta Counter Change Event with Time 16-Bit Delta Counter Change Event with Time Distributed Network Protocol (DNP) V3.00 Date Code 20020215 SEL-351R Instruction Manual...
Page 599 32-Bit Frozen Analog Event with Time 16-Bit Frozen Analog Event with Time Analog Output Status—All Variations 0,1,6,7,8 32-Bit Analog Output Status 0,1,6,7,8 0,1,7,8 16-Bit Analog Output Status 0,1,6,7,8 0,1,7,8 Date Code 20020215 Distributed Network Protocol (DNP) V3.00 SEL-351R Instruction Manual...
Page 600 Private Registration Object Descriptor Application Identifier Short Floating Point Long Floating Point Extended Floating Point Small Packed Binary-Coded Decimal Medium Packed Binary-Coded Decimal Large Packed Binary-Coded Decimal No object 13,14,23 H-10 Distributed Network Protocol (DNP) V3.00 Date Code 20020215 SEL-351R Instruction Manual...
Page 601: Data Map
The following is the default object map supported by the SEL-351R (FID = SEL-351R-Rxxx- V0-Zxxxxxx-Dxxxxxxxx). Table H.3: SEL-351R DNP Data Map DNP Object Type Index Description 01,02 000–499 Relay Word, where 50B3 is 0 and 50NF is 447 (LT9 is 471 for the SEL-351R-2.)
Page 602 30,32 42,43 A-phase MWhr in and out. 30,32 44,45 B-phase MWhr in and out. 30,32 46,47 C-phase MWhr in and out. 30,32 48,49 3-phase MWhr in and out. H-12 Distributed Network Protocol (DNP) V3.00 Date Code 20020215 SEL-351R Instruction Manual...
Page 603 51N2P setting in primary units 40,41 Active settings group. Extended mode (DNPE) only Object type 32 event messages are generated for these points in DNP extended mode (DNPE) only. Date Code 20020215 Distributed Network Protocol (DNP) V3.00 H-13 SEL-351R Instruction Manual...
Page 604 In order to determine an element’s point index, consult the Relay Word Bits table in Section 9: Setting the SEL-351R Recloser Control. Locate the element in question in the table and note the Relay Word row number. From that row number, subtract the row number of the first Relay Word row (usually 2) and multiply that result by 8.
Page 605: Relay Summary Event Data
Pulse-On binary output point 15. This will load the relay event summary analogs (points 105 113) with information from the oldest relay event summary, discarding the values – Date Code 20020215 Distributed Network Protocol (DNP) V3.00 H-15 SEL-351R Instruction Manual...
Page 606: Point Remapping
Analogs 112 28 17 35 1 56 57 58 59 60 61 62 63 64 65 \ 66 67 100 101 102 103 Binaries = Default Map<ETX> ==> H-16 Distributed Network Protocol (DNP) V3.00 Date Code 20020215 SEL-351R Instruction Manual...
Page 607 35 1 56 57 58 59 60 61 62 63 64 65 66 67 100 101 102 \<CR> 103<CR> Save Changes (Y/N)? Y<CR> ==>DNP B Enter the new DNP Binary map <CR> Save Changes (Y/N)? Y<CR> ==> Date Code 20020215 Distributed Network Protocol (DNP) V3.00 H-17 SEL-351R Instruction Manual...
Page 608: Settings Sheet - Standard Mode Dnp Port - Set P
NUMEVE = – Age of oldest event to force transmit on, seconds (0.0 60.0) AGEEVE = – Time-out for confirmation of unsolicited message, seconds (0 UTIMEO = – H-18 Distributed Network Protocol (DNP) V3.00 Date Code 20020215 SEL-351R Instruction Manual...
Page 609: Settings Sheet - Extended Mode Dnp Port - Set P
NUMEVE = – Age of oldest event to force transmit on, seconds (0.0 60.0) AGEEVE = – Time-out for confirmation of unsolicited message, seconds (0 UTIMEO = – Date Code 20020215 Distributed Network Protocol (DNP) V3.00 H-19 SEL-351R Instruction Manual...
Page 611: Appendix I: Mirrored Bits
The information exchanged can facilitate remote control, remote sensing, or communications-assisted protection schemes such as POTT, DCB, etc. The SEL-351R Recloser Control supports two M IRRORED channels, differentiated by the channel specifiers A and B. Bits transmitted are called TMB1x through TMB8x, where x is the channel specifier (e.g., A or B), and are controlled by...
Page 612: Synchronization
1/2 cycle. However, in that same example, a security counter set to two on the SEL-351R will delay a bit by 1/4 cycle, because the SEL-351R is receiving new messages each 1/8 cycle from the SEL-321.
Page 613: Loop-Back Testing
The relay resets RTS (to a negative voltage at the EIA-232 connector) for M IRRORED communications using this specification. The relay sets RTS (to a positive voltage at the EIA-232 connector) for M communications using the R6 or original R version of IRRORED IRRORED Date Code 20020215 IRRORED SEL-351R Instruction Manual...
Page 614: Settings
CBADA is asserted. The times used in the calculation are those that are available in the COMM records. See the COMM command in the SEL-321, SEL-351, or SEL-351R manuals for a description of the COMM records. Date Code 20020215...
Page 615 RMB8DO= 1 Supervise the transfer of received data (or default data) to RMB1A RMB8A with the M – IRRORED pickup and dropout security counters. Set the pickup and dropout counters individually for each bit. Date Code 20020215 IRRORED SEL-351R Instruction Manual...
Page 617 Entry of dates is dependent on the Date Format setting DATE_F (= MDY or YMD) ® COU k Show the SEL counter values. Enter k for repeat count. (SEL-351R-2 only) OGIC Show date. DAT m/d/y Enter date in this manner if Date Format setting DATE_F = MDY.
Page 618 Change EZ recloser control settings for settings group n (n = 1–6). EZ recloser control settings override and change a number of the “regular” settings made with the SET n command (Access Level 2). Page 2 of 4 SEL-351R Command Summary Date Code 20020215 SEL-351R Instruction Manual...
Page 619 Access Level 2. The screen prompt is: =>> CON n Control Relay Word bit RBn, Remote Bit n where n = 1–8 (n = 1–16 in the SEL-351R-2). Execute CON n and the control responds: CONTROL RBn. Then reply with one of the...
Page 620 Skips to next setting section. END <ENTER> Exits setting editing session, then prompts user to save settings. Ctrl - X Aborts setting editing session without saving changes. Page 4 of 4 SEL-351R Command Summary Date Code 20020215 SEL-351R Instruction Manual...

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