Page 1 Grid Solutions Low Impedance Bus Differential System Instruction Manual Product version: 7.41x GE publication code: 1601-0115-AE1 (GEK-130973) E83849 LISTED IND.CONT. EQ. 52TL 1601-0115-AE1...
Page 2 The contents of this manual are the property of GE Multilin Inc. This documentation is furnished on license and may not be reproduced in whole or in part without the permission of GE Multilin. The content of this manual is for informational use only and is subject to change without notice.
Page 3: Table Of Contents
2.5.14 Approvals ..........................2-27 2.5.15 Maintenance.........................2-27 3 INSTALLATION Unpack and inspect..................3-1 Panel cutouts....................3-2 3.2.1 Rear terminal layout ......................3-4 Wiring ........................ 3-5 3.3.1 Typical wiring ......................... 3-5 3.3.2 Dielectric strength......................3-11 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 4 Menu navigation ........................ 4-16 4.2.4 Menu hierarchy........................4-16 4.2.5 Changing settings......................4-17 4.2.6 Faceplate ..........................4-19 4.2.7 LED indicators........................4-20 4.2.8 Custom LED labeling ......................4-23 4.2.9 Change passwords ......................4-28 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 5 Grouped elements ..................5-137 5.6.1 Overview..........................5-137 5.6.2 Setting group 1.........................5-138 5.6.3 Bus differential........................5-138 5.6.4 Breaker failure (ANSI 50BF) ..................5-143 5.6.5 Voltage elements......................5-151 5.6.6 Current elements......................5-152 5.6.7 End fault protection......................5-159 Control elements ..................5-162 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 6 Event records ........................6-12 6.5.3 Oscillography ........................6-13 Product information..................6-13 6.6.1 Model information ......................6-13 6.6.2 Firmware revisions ......................6-14 7 COMMANDS AND Commands menu..................... 7-1 TARGETS 7.1.1 Virtual inputs ...........................7-2 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 7 Internal and external fault example................9-10 10 MAINTENANCE 10.1 Monitoring ...................... 10-1 10.1.1 Devices with Site Targets....................10-1 10.1.2 Data with Modbus Analyzer ..................10-1 10.2 General maintenance ................... 10-3 10.2.1 In-service maintenance ....................10-3 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 8 B RADIUS SERVER B.1 RADIUS server configuration .................B-1 CONFIGURATION C COMMAND LINE C.1 Command line interface .................C-1 INTERFACE D MISCELLANEOUS D.1 Warranty ......................D-1 D.2 Revision history ....................D-1 ABBREVIATIONS INDEX viii B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 9: Introduction
Ensure that the control power applied to the device, the AC current, and voltage input match the ratings specified on the relay nameplate. Do not apply current or voltage in excess of the specified limits. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 10: For Further Assistance
Worldwide e-mail: multilin.tech@ge.com Europe e-mail: multilin.tech.euro@ge.com Website: http://www.gegridsolutions.com/multilin When contacting GE by e-mail, optionally include a device information file, which is generated in the EnerVista software by clicking the Service Report button. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 11 CHAPTER 1: INTRODUCTION FOR FURTHER ASSISTANCE Figure 1-1: Generate service report B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 12 FOR FURTHER ASSISTANCE CHAPTER 1: INTRODUCTION B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 13: Product Description
The B90 Low Impedance Bus Differential System is a microprocessor-based architecture that provides protection and metering for busbars with up to 24 feeders. The B90 protection system is a centralized architecture built on one B90 IED as per requirements of a particular application. The IED is a full-featured B90 and as such can be accessed and programmed individually.
Page 14 PTP (according to IEEE Std. 1588-2008 or IEC 61588), and it allows access to the relay via any standard web browser (B90 web pages). The IEC 60870-5-104 protocol is supported on the Ethernet port. The Ethernet port also supports the Parallel Redundancy Protocol (PRP) of IEC 62439-3 (clause 4, 2012) when purchased as an option.
Page 15 Time synchronization over IRIG-B or IEEE 1588 DNP 3.0 or IEC 60870-5-104 communications Time synchronization over SNTP Dynamic bus replica User definable displays End fault protection User-programmable fault reports Event recorder User-programmable LEDs B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 16: Security
The B90 supports password entry from a local or remote connection. Local access is defined as any access to settings or commands via the faceplate interface. This includes both keypad entry and the through the faceplate RS232 port. Remote access is defined as any access to settings or commands via any rear communications port.
Page 17 See table notes See table notes |--------------- Display Properties |--------------- Clear Relay Records (settings) |--------------- Communications |--------------- Modbus User Map |--------------- Real Time Clock |--------------- Oscillography |--------------- Data Logger |--------------- Demand B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 18 |---------- Virtual Inputs |---------- Clear Records |---------- Set Date and Time User Displays Targets Actual Values |---------- Front panel labels designer |---------- Status |---------- Metering |---------- Transducer I/O |---------- Records |---------- Product Info B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 19: Order Codes
2.3 Order codes A B90 protection system consists of several UR-series B90 IEDs as per user needs and system configuration. At least three IEDs are required to provide differential and other protection functions for phases A, B, and C of the busbar. The fourth IED is required for breaker failure functionality and isolator status monitoring as well as extra input and output capability.
Page 20 B90 IEDs. The B90 is provided with an option of protecting 8, 16, or 24-feeder busbars. When ordered as an eight-feeder protection system, the B90 is configurable for up to eight-input bus differential, regardless of the number of physical current inputs available in the B90 IEDs.
Page 21 IEEE 1588 + PRP + CyberSentry Lvl 1 + six-zone 16-feeder bus protection + breaker failure + IEC 61850 IEEE 1588 + PRP + CyberSentry Lvl 1 + six-zone 24-feeder bus protection + breaker failure + IEC 61850 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 22 CyberSentry Lvl 2 + 24 feeders, 01 zone + Breaker Failure + IEC 61850 IEEE 1588 + CyberSentry Lvl 2 + 08 feeders, 06 zones IEEE 1588 + CyberSentry Lvl 2 + 16 feeders, 06 zones 2-10 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 23 IEC 60870-5-103 + IEEE 1588 + PRP + CyberSentry Lvl 2 + 24 feeders, 06 zones + Breaker Failure + IEC 61850 IEC 60870-5-103 + IEEE 1588 + PRP + CyberSentry Lvl 2 + 24 feeders, 01 zone + Breaker Failure + IEC 61850 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 2-11...
Page 24: Replacement Modules
RS422, 1 Channel 7W RS422, 2 Channels 2.3.1 Replacement modules Replacement modules can be ordered separately. When ordering a replacement CPU module or faceplate, provide the serial number of your existing unit. 2-12 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 25 CHAPTER 2: PRODUCT DESCRIPTION ORDER CODES Not all replacement modules apply to the B90 relay. The modules specified in the order codes for the B90 are available as replacement modules for the B90. The order codes shown here are subject to change without notice. See the web page for the product for the latest options.
Page 26: Signal Processing
The UR samples its AC signals at 64 samples per cycle, that is, at 3840 Hz in 60 Hz systems, and 3200 Hz in 50 Hz systems. The sampling rate is dynamically adjusted to the actual system frequency by an accurate and fast frequency tracking system. The A/D converter has the following ranges of AC signals: 2-14 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 27 Measured analog values and binary signals can be captured in COMTRADE format with sampling rates from 8 to 64 samples per power cycle. Analog values can be captured with Data Logger, allowing much slower rates extended over long period of time. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 2-15...
Page 28: Specifications
0.5% of reading or 1% of nominal (whichever is greater) above 2.0 × CT 1.5% of reading Curve shapes: IEEE Moderately/Very/Extremely Inverse; IEC (and BS) A/B/C and Short Inverse; GE IAC Inverse, Short/Very/Extremely Inverse; I t; FlexCurves™ (programmable); Definite Time (0.01 s base curve) 2-16 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM –...
Page 29: User-Programmable Elements
<2 ms at 60 Hz Timer accuracy: ±3% or 10 ms, whichever is greater 2.5.2 User-programmable elements FLEXLOGIC Programming language: Reverse Polish Notation with graphical visualization (keypad programmable) Lines of code: 1024 Internal variables: B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 2-17...
Page 30 Hold timer: 0.0 to 10.0 s in steps of 0.1 DIGITAL ELEMENTS Number of elements: Operating signal: any FlexLogic operand Pickup delay: 0.000 to 999999.999 s in steps of 0.001 2-18 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 31: Monitoring
4xInom URs equipped with 24 CT inputs have a maximum operating temperature of 50°C Short circuit rating: 150000 RMS symmetrical amperes, 250 V maximum (primary current to external CT) B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 2-19...
Page 32 Unreturned message alarm: Responding to: Rate of unreturned messages in the ring configuration Monitoring message count: 10 to 10000 in steps of 1 Alarm threshold: 1 to 1000 in steps of 1 2-20 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 33: Power Supply
Operate time: < 4 ms Contact material: silver alloy LATCHING RELAY Make and carry for 0.2 s: 30 A as per ANSI C37.90 Carry continuous: 6 A as per IEEE C37.90 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 2-21...
Page 34 <100 µs Maximum voltage: 265 V DC Maximum leakage current in off state (excluding voltage monitor circuit current): 100 µA Maximum continuous current: 5 A at 45°C; 4 A at 65°C 2-22 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 35: Communications
–30 dBm Power budget 10 dB Maximum input power –14 dBm Typical distance 2 km Full duplex Redundancy ETHERNET (10/100 MB TWISTED PAIR) Modes: 10 Mb, 10/100 Mb (auto-detect) Connector: RJ45 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 2-23...
Page 36: Inter-Relay Communications
9 dB –14 dBm 1300 nm Laser, Single mode –1 dBm –30 dBm 29 dB –14 dBm 1550 nm Laser, Single mode +5 dBm –30 dBm 35 dB –14 dBm 2-24 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 37: Cybersentry Security
OPTIONS Software options: Level 1 2.5.11 Environmental AMBIENT TEMPERATURES Storage temperature: –40 to 85°C Operating temperature: –40 to 60°C; the LCD contrast can be impaired at temperatures less than –20°C B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 2-25...
Page 38: Type Tests
NKCR Safety UL C22.2-14 e83849 NKCR7 Safety UL 1053 e83849 NKCR Safety IEC 60255-27 Insulation: class 1, Pollution degree: 2, Over voltage cat II 1 Not tested by third party. 2-26 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 39: Production Tests
Normally, cleaning is not required. When dust has accumulated on the faceplate display, wipe with a dry cloth. To avoid deterioration of electrolytic capacitors, power up units that are stored in a de-energized state once per year, for one hour continuously. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 2-27...
Page 40 SPECIFICATIONS CHAPTER 2: PRODUCT DESCRIPTION 2-28 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 41: Installation
For any issues, contact GE Grid Solutions as outlined in the For Further Assistance section in chapter 1. Check that you have the latest copy of the B90 Instruction Manual and the UR Family Communications Guide, for the applicable firmware version, at http://gegridsolutions.com/multilin/manuals/index.htm...
Page 42: Panel Cutouts
Maintenance > Change Front Panel. The B90 is available as a 19-inch rack horizontal mount unit with a removable faceplate. The faceplate can be specified as either standard or enhanced at the time of ordering. The enhanced faceplate contains additional user-programmable pushbuttons and LED indicators.
Page 43 CHAPTER 3: INSTALLATION PANEL CUTOUTS Figure 3-2: Horizontal mounting (enhanced panel) Figure 3-3: Horizontal mounting and dimensions (standard panel) B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 44: Rear Terminal Layout
(nearest to CPU module), indicated by an arrow marker on the terminal block. The figure shows an example of rear terminal assignments. Figure 3-4: Example of modules in F and H slots B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 45: Wiring
CHAPTER 3: INSTALLATION WIRING 3.3 Wiring 3.3.1 Typical wiring Figure 3-5: B90 is a multi-IED protection system B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 46 The wiring diagrams on the next four pages are based on the following order code: B90-H02-HCL-F8H-H6H-L8H-N6A-S8H-U6H-W7H. The purpose of these diagrams is to provide examples of how the B90 is typically wired, not specifically how to wire your own relay. See the sections following the wiring diagrams for examples on connecting your relay correctly based on your relay configuration and order code.
Page 47 CHAPTER 3: INSTALLATION WIRING Figure 3-6: Typical wiring diagram (Phase A; T module shown for CPU) B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 48 WIRING CHAPTER 3: INSTALLATION Figure 3-7: Typical wiring diagram (Phase B; T module shown for CPU) B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 49 CHAPTER 3: INSTALLATION WIRING Figure 3-8: Typical wiring diagram (Phase C; T module shown for CPU) B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 50 WIRING CHAPTER 3: INSTALLATION Figure 3-9: Typical wiring diagram (breaker fail and isolator monitoring; T module shown) 3-10 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 51: Dielectric Strength
The power supply module can be ordered for two possible voltage ranges, and the B90 can be ordered with or without a redundant power supply module option. Each range has a dedicated input connection for proper operation. The ranges are as follows (see the Specifications section of chapter 2 for details): •...
Page 52: Ct And Vt Modules
1 to 50000 A primaries and 1 A or 5 A secondaries may be used. Each B90 voltage input is intended for monitoring a single-phase voltage. The may include phase voltages or neutral voltage from the open-delta VT.
Page 53: Contact Inputs And Outputs
“On = 1” when the current flowing through the closed contact exceeds about 80 to 100 mA. The voltage monitor is intended to check the health of the overall trip circuit, and the current monitor can be used to seal-in B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-13...
Page 54 500 Ω, 10 W resistor is appropriate. In this configuration, the voltage across either the form-A contact or the resistor can be used to monitor the state of the output. 3-14 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 55 2 Inputs Fast Form-C ~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs Fast Form-C ~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-15...
Page 56 2 Inputs 2 Outputs Solid-State Solid-State ~6a, ~6c 2 Inputs 2 Outputs Not Used Not Used ~7a, ~7c 2 Inputs 2 Outputs Solid-State Solid-State ~8a, ~8c 2 Inputs Not Used 3-16 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 57 CHAPTER 3: INSTALLATION WIRING Figure 3-13: Contact input and output module wiring (Sheet 1 of 2) B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-17...
Page 58 CHAPTER 3: INSTALLATION Figure 3-14: Contact input and output module wiring (Sheet 2 of 2) For proper functionality, observe the polarity shown in the figures for all contact input and output connections. 3-18 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 59 Afterwards the contact input current is reduced to a steady-state current. The impulse has a five-second delay after a contact input changes state. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-19...
Page 60: Rs232 Faceplate Port
EnerVista UR Setup software provided with the relay. Cabling for the RS232 port is shown in the following figure for both 9-pin and 25-pin connectors. The baud rate for this port can be set, with a default of 115200 bps. 3-20 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 61: Cpu Communication Ports
3.3.7 CPU communication ports 3.3.7.1 Overview In addition to the faceplate RS232 port, there is a rear RS485 communication port. The CPU modules do not require a surge ground connection. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-21...
Page 62 This common voltage is implied to be a power supply common. Some systems allow the shield (drain wire) to be used as common wire and to connect directly to the B90 COM terminal (#3); others function correctly only if the common wire is connected to the B90 COM terminal, but insulated from the shield.
Page 63: Irig-B
IRIG-B is a standard time code format that allows stamping of events to be synchronized among connected devices. The IRIG-B code allows time accuracies of up to 100 ns. Using the IRIG-B input, the B90 operates an internal oscillator with 1 µs resolution and accuracy.
Page 64: Direct Input And Output Communications
UR-series relays with the following connections: UR1-Tx to UR2-Rx, UR2-Tx to UR3-Rx, UR3-Tx to UR4-Rx, and UR4-Tx to UR1-Rx. A maximum of 16 URs can be connected in a single ring. 3-24 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 65 UR1-Tx1 to UR2-Rx1, UR2-Tx1 to UR3-Rx1, UR3-Tx1 to UR4-Rx1, and UR4-Tx1 to UR1-Rx1 for the first ring; and UR1-Tx2 to UR4-Rx2, UR4-Tx2 to UR3-Rx2, UR3-Tx2 to UR2-Rx2, and UR2-Tx2 to UR1-Rx2 for the second ring. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-25...
Page 66 Those that apply depend on options purchased. The options are outlined in the Inter-Relay Communications section of the Order Code tables in Chapter 2. All of the fiber modules use ST type connectors. 3-26 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 67: Fiber: Led And Eled Transmitters
The following figure shows the configuration for the 72, 73, 7D, and 7K fiber-laser modules. Figure 3-27: 7x Laser fiber modules The following figure shows configuration for the 2I and 2J fiber-laser modules. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-27...
Page 68: Interface
The following figure shows the typical pin interconnection between two G.703 interfaces. For the actual physical arrangement of these pins, see the Rear Terminal Layout section earlier in this chapter. All pin interconnections are to be maintained for a connection to a multiplexer. 3-28 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 69 Once the clips have cleared the raised edge of the chassis, engage the clips simultaneously. When the clips have locked into position, the module is inserted fully. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-29...
Page 70 (S1 = ON) and set timing mode to loop timing (S5 = OFF and S6 = OFF). The switch settings for the internal and loop timing modes are shown. 3-30 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 71 One source lies on the G.703 line side of the interface while the other lies on the differential Manchester side of the interface. Figure 3-34: G.703 dual loopback mode B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-31...
Page 72: Rs422 Interface
(data module 1) connects to the clock inputs of the UR RS422 interface in the usual way. In 3-32 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 73 Figure 3-37: Timing configuration for RS422 two-channel, three-terminal application Data module 1 provides timing to the B90 RS422 interface via the ST(A) and ST(B) outputs. Data module 1 also provides timing to data module 2 TT(A) and TT(B) inputs via the ST(A) and AT(B) outputs. The data module pin numbers have been omitted in the figure because they vary by manufacturer.
Page 74: Rs422 And Fiber Interface
When using a laser interface, attenuators can be necessary to ensure that you do not exceed maximum optical input power to the receiver. Figure 3-39: RS422 and fiber interface connection 3-34 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 75: And Fiber Interface
Connection — as per all fiber optic connections, a Tx to Rx connection is required The UR-series C37.94 communication module can be connected directly to any compliant digital multiplexer that supports the IEEE C37.94 standard. The figure shows the concept. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-35...
Page 76 5.60. For customers using firmware release 5.60 and higher, the module can be identified with "Rev D" printed on the module and is to be used on all ends of B90 communication for two and three terminal applications.
Page 77 Figure 3-44: IEEE C37.94 timing selection switch setting Modules shipped since January 2012 have status LEDs that indicate the status of the DIP switches, as shown in the following figure. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-37...
Page 78: C37.94Sm Interface
Fiber optic cable length — Up to 11.4 km • Fiber optic connector — Type ST • Wavelength — 1300 ±40 nm • Connection — As per all fiber optic connections, a Tx to Rx connection is required 3-38 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 79 5.60. For customers using firmware release 5.60 and higher, the module can be identified with "Rev D" printed on the module and is to be used on all ends of B90 communication for two and three terminal applications.
Page 80 When the clips have locked into position, the module is inserted fully. Figure 3-47: C37.94SM timing selection switch setting Modules shipped since January 2012 have status LEDs that indicate the status of the DIP switches, as shown in the following figure. 3-40 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 81: Activate Relay
MESSAGE SECURITY Press the down arrow until the message displays. MESSAGE INSTALLATION Press the right arrow until the Not Programmed message displays. MESSAGE RELAY SETTINGS: B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-41...
Page 82: Install Software
To communicate via the faceplate RS232 port, use a standard straight-through serial cable. Connect the DB-9 male end to the relay and the DB-9 or DB-25 female end to the computer COM2 port as described in the CPU Communication Ports section earlier in this chapter. 3-42 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 83: System Requirements
This device (catalog number F485) connects to the computer using a straight-through serial cable. A shielded twisted-pair (20, 22, or 24 AWG) connects the F485 converter to the B90 rear communications port. The converter terminals (+, –, GND) are connected to the B90 communication module (+, –, COM) terminals. See the CPU Communication Ports section in chapter 3 for details.
Page 84: Install Software
Click the Next button to begin the installation. The files are installed in the directory indicated, and the installation program automatically creates icons and adds an entry to the Windows start menu. 3-44 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 85: Add Device To Software
3.7 Add device to software You connect remotely to the B90 through the rear RS485 or Ethernet port with a computer running the EnerVista UR Setup software. The B90 also can be accessed locally with a computer through the front panel RS232 port or the rear Ethernet port using the Quick Connect feature.
Page 86 From the Windows desktop, right-click the My Network Places icon and select Properties to open the network connections window. Or in Windows 7, access the Network and Sharing Center in the Control Panel. 3-46 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 87 Select the Internet Protocol (TCP/IP) item from the list, and click the Properties button. Click the “Use the following IP address” box. Enter an IP address with the first three numbers the same as the IP address of the B90 relay and the last number different (in this example, 1.1.1.2).
Page 88 Minimum = 0ms, Maximum = 0ms, Average = 0 ms Pinging 1.1.1.1 with 32 bytes of data: verify the physical connection between the B90 and the computer, and double-check the programmed IP address in setting, then repeat step 2. Product Setup  Communications  Network  IP Address...
Page 89 If this computer is used to connect to the Internet, re-enable any proxy server settings after the computer has been disconnected from the B90 relay. Start the Internet Explorer software. Select the UR device from the EnerVista Launchpad to start EnerVista UR Setup. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-49...
Page 90 Click the Quick Connect button to open the window. Select the Ethernet interface and enter the IP address assigned to the B90, then click the Connect button. The EnerVista UR Setup software creates a site named “Quick Connect” with a corresponding device also named “Quick Connect”...
Page 91: Configure Serial Connection
For the RS232 connection, a computer with an RS232 port and a serial cable are required. To use the RS485 port at the back of the relay, a GE Grid Solutions F485 converter (or compatible RS232-to-RS485 converter) is required. See the F485 instruction manual for details.
Page 92: Configure Ethernet Connection
SEL-2032. This option enables display of a terminal window to allow interaction with the other device. 11. Click the Read Order Code button to connect to the B90 and upload the order code to the software. If a communications error occurs, ensure that the EnerVista software serial communications values entered in the previous step correspond to the relay setting values, and also ensure that the same IP address is not assigned to multiple B90 ports.
Page 93 12. If using a gateway to connect to the device, select Yes from the drop-down list. 13. Click the Read Order Code button to connect to the B90 device and upload the order code. If the device was entered already, a message displays "Device ’x’ is also using IP address.." If a communications error occurs, ensure that the values entered in the previous steps correspond to the relay setting values, and also ensure that the same IP address is not assigned to multiple B90 ports.
Page 94: Configure Modem Connection
ADD DEVICE TO SOFTWARE CHAPTER 3: INSTALLATION The device has been configured for Ethernet communications. Proceed to the Connect to the B90 section to begin communications. 3.7.4 Configure modem connection A modem connection allows a computer to communicate with a UR device over phone lines.
Page 95: Connect To The B90
When unable to connect because of an "ACCESS VIOLATION," access Device Setup and refresh the order code for the device. When unable to connect, ensure that the same IP address is not assigned to multiple B90 ports, for example under Settings > Product Setup > Communications > Network.
Page 96: Use Quick Connect Via The Front Panel Rs232 Port
Connect a nine-pin to nine-pin RS232 serial cable to the computer and the front panel RS232 port. Verify that the latest version of the EnerVista UR Setup software is installed (available from the GE EnerVista DVD or online from http://www.gegridsolutions.com/multilin). See the software installation section if not already installed.
Page 97: Use Quick Connect Via A Rear Ethernet Port
Connect" and displays them in the Online Window. Expand the sections to view data directly from the B90 device. Use the Device Setup button to change the site name. Each time that the EnerVista software is initialized, click the Quick Connect button to establish direct communications to the B90.
Page 98: Import Settings
Select the file to import. To apply the settings to a live device, drag-and-drop the device entry from the Offline Window area to its entry in the Online Window area. 3-58 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 99 CHAPTER 3: INSTALLATION IMPORT SETTINGS Individual settings also can be dragged and dropped between Online and Offline Window areas. The order codes much match. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 3-59...
Page 100 IMPORT SETTINGS CHAPTER 3: INSTALLATION 3-60 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 101: Interfaces
The EnerVista UR Setup software is provided with every B90. This chapter outlines the EnerVista software interface features. The EnerVista UR Setup Help File also provides details for getting started and using the software interface.
Page 102: Event Viewing
IP Address IP Subnet Mask IP Routing When a settings file is loaded to a B90 that is in-service, the following sequence occurs: The B90 takes itself out of service. The B90 issues a UNIT NOT PROGRAMMED major self-test error.
Page 103: File Support
Settings list / offline window area Software windows, with common tool bar Settings file data view windows, with common tool bar Workspace area with data view tabs Status bar 10. Quick action hot links B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 104: Protection Summary Window
The Protection Summary is a graphical user interface to manage elements, such as enabling and disabling them. Access it under Settings > Protection Summary. See the Settings chapter for information on use. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 105: Settings Templates
Right-click the selected device or settings file and select the Template Mode > Create Template option. The settings file template is now enabled and the file menus displayed in light blue. A message displays. The settings file is now in template editing mode. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 106 Figure 4-4: Settings template with all settings specified as locked Specify the settings to make viewable by clicking them. A setting available to view is displayed against a yellow background. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 107 Select an installed device or a settings file from the left menu of the EnerVista UR Setup window. Apply the template by selecting the Template Mode > View In Template Mode option. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 108 Once the template has been applied, users are limited to edit the settings specified by the template, but all settings are shown. The effect of applying the template to the phase time overcurrent settings is shown as follows. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 109: Secure And Lock Flexlogic Equations
4.1.8.1 Lock FlexLogic equations To lock individual entries of a FlexLogic equation: Right-click the settings file or online device and select the Template Mode > Create Template item to enable the settings template feature. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 110 The effect of applying the template to the FlexLogic entries is shown here. Figure 4-10: Locking FlexLogic entries through settings templates The FlexLogic entries are also shown as locked in the graphical view and on the front panel display. 4-10 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 111 Right-click the setting file in the offline window area and select the Edit Device Properties item. The window opens. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-11...
Page 112: Settings File Traceability
When a settings file is transferred to a B90 device, the date, time, and serial number of the B90 are sent back to EnerVista UR Setup and added to the settings file on the local computer. This information can be compared with the B90 actual values at any later date to determine if security has been compromised.
Page 113 With respect to the figure, the traceability feature is used as follows. The transfer date of a settings file written to a B90 is logged in the relay and can be viewed in the EnerVista software or the front panel display. Likewise, the transfer date of a settings file saved to a local computer is logged in the EnerVista software.
Page 114 4.1.9.2 Online device traceability information The B90 serial number and file transfer date are available for an online device through the actual values. Select the Actual Values > Product Info > Model Information menu item within the EnerVista online window as shown in the example.
Page 115: Front Panel Interface
The front panel can be viewed and used in the EnerVista software, for example to view an error message displayed on the front panel. To view the front panel in EnerVista software: Click Actual Values > Front Panel. Figure 4-18: Front panel use in the software (C60 shown) B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-15...
Page 116: Front Panel Keypad
Conversely, continually pressing the MESSAGE left arrow from a setting value or actual value display returns to the header display. 4-16 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 117: Changing Settings
Each numerical setting has its own minimum, maximum, and increment value associated with it. These parameters define what values are acceptable for a setting. FLASH MESSAGE For example, select the SETTINGS  PRODUCT SETUP  DISPLAY PROPERTIES  FLASH TIME: 10.0 s MESSAGE TIME setting.  B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-17...
Page 118 Repeat step 2 for the remaining characters: r,e,a,k,e,r, ,#,1. Press to store the text. ENTER If you have any problem, press to view context sensitive help. Flash messages appear sequentially for several HELP 4-18 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 119: Faceplate
The faceplate is hinged to allow easy access to the removable modules. There is also a removable dust cover that fits over the faceplate that must be removed in order to access the keypad panel. The following figure shows the horizontal arrangement of the faceplate panel. Figure 4-21: Standard horizontal faceplate B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-19...
Page 120: Led Indicators
ORed to turn on or off the phase A, B, or C LEDs. • VOLTAGE — This LED indicates voltage was involved • CURRENT — This LED indicates current was involved • FREQUENCY — Not used 4-20 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 121 Support for applying a customized label beside every LED is provided. Default labels are shipped in the label package of every B90, together with custom templates. The default labels can be replaced by user-printed labels. User customization of LED operation is of maximum benefit in installations where languages other than English are used to communicate with operators.
Page 122 • OTHER — Indicates a composite function was involved, BUS 5 OP was asserted, or BUS 6 OP was asserted. For the B90, a composite function means either any Digital Element OP or any TRIP BUS OP. • PHASE A — Not used •...
Page 123: Custom Led Labeling
Select the Front Panel Label Designer item from the Online Window or Offline Window area, for example under Settings > Front Panel Label Designer. If the option does not display, it means that the B90 does not have an enhanced front panel or that no customization is possible. The Online Window has the advantage of displaying the live fields as opposed to blank fields.
Page 124 Use the tool EXACTLY as outlined as follows, with the printed side containing the GE part number facing the user. The label package shipped with every B90 contains the three default labels, the custom label template sheet, and the label removal tool.
Page 125 Bend the tab at the center of the tool tail as shown. To remove the LED labels from the B90 enhanced front panel and insert the custom labels: Use the knife to lift the LED label and slide the label tool underneath. Ensure that the bent tabs are pointing away from the relay.
Page 126 Slide the new LED label inside the pocket until the text is properly aligned with the LEDs, as shown. To remove the user-programmable pushbutton labels from the B90 enhanced front panel and insert the custom labels: Use the knife to lift the pushbutton label and slide the tail of the label tool underneath, as shown. Ensure that the bent 4-26 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM –...
Page 127 Remove the tool and attached user-programmable pushbutton label. Slide the new user-programmable pushbutton label inside the pocket until the text is properly aligned with the B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-27...
Page 128: Change Passwords
When entering a settings or command password via EnerVista or any serial interface, the user must enter the corresponding connection password. If the connection is to the back of the B90, the remote password must be used. If the connection is to the RS232 port of the faceplate, the local password must be used.
Page 129: Invalid Password Entry
By default, when an incorrect Command or Setting password has been entered via the faceplate interface three times within five minutes, the FlexLogic operand is set to “On” and the B90 does not allow settings or LOCAL ACCESS DENIED command level access via the faceplate interface for five minutes.
Page 130 Connection  S, R Set, Reset Timer pickup. Triggered by the settings latch in the diagram. Timer reset. Triggered by the reset latch in the diagram. Figure 4-27: Logic diagram 4-30 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 131: Flexlogic Design And Monitoring Using Engineer
Works with all UR firmware versions The figure shows an example where several inputs are used to trigger an output. With the OR function, any one of the inputs can trigger the output. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-31...
Page 132 This section explains how to use Engineer. It outlines the following topics: • Design logic • Send file to and from device • Monitor logic • View front panel • Generate connectivity report • Preferences 4-32 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 133: Design Logic
Preparation — Under Settings > Inputs/Outputs > Virtual Outputs, virtual outputs 3 and 4 are named DLTrigger Top logic — Seven-minute timer trigger Bottom logic — Turn on LED 9 for 10 seconds when the trigger starts B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-33...
Page 134 This procedure uses input / output logic as an example. To create a logic diagram: In the Offline Window area, access Engineer for the device, then Logic Designer. If the device is not listed, right-click 4-34 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 135 Add the input blocks to the logic diagram. For example, click the I/O Tokens tab on the right, click the Input element, then click in the logic sheet to add it. Or drag-and-drop it. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-35...
Page 136 Line option. The cursor needs to be at the connection point to end the line, not elsewhere on the block. Note that the outline color is no longer red on the blocks. 4-36 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 137 The warning "input using disabled feature" means that input needs to be enabled. Double-click the block, click the View Associated Screen button, enable the setting, save, and recompile. The output and messages are explained in the next section. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-37...
Page 138 'Do not update IID file when updating SCL files') are updated. If the CID file is not already there, it is generated. The location of these files is C:\ProgramData\GE Power Management\urpc, for example, in the Offline and Online folders.
Page 139 The same timer is used in more than one place in the editor. This means (TIMER_ID, SheetReference) either the circuit that the Timer belongs to has been branched, or the Timer has been duplicated. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-39...
Page 140 Click the Ok button to save and exit from the window. In the logic diagram, select an element, then click in the drawing area to add it, click again to add a second box, and so on. 4-40 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 141 Optimization Summary. Changes also display when the FlexLogic Equation Editor is accessed. The logic diagram does not change. In the example shown, no lines were saved to free up space. Figure 4-44: Code optimization results B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-41...
Page 142 Type in the second text string box, or select any of the 32 previous searches from the drop-down list. Click the Search button. Any results display. The search applies to all tabs, not just the active tab. Double-click a search result to view the item. 4-42 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 143: Send File To And From Device
When a window opens, select the device to which you want to send the file, then click the Send button and confirm. The order codes must match. The file is sent to the live device. Any errors can be viewed in the log file at the prompt. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-43...
Page 144: Monitor Logic
(green box outline). In this case, the battery is weak and needs to be replaced. This can be viewed as the Replace Battery message on the front panel of the device and in the EnerVista software under Actual Values > Front Panel > Front Panel or Display/Keypad. 4-44 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 145: View Front Panel And Print Labels
To save the report and labels, click File > Save As, enter a file name, and select the FPR, JPG, or PDF format. Use the instructions in the second tab of the window to add the labels to the physical device. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-45...
Page 146: Generate Connectivity Report
View > Toolbar > Advanced Actions — Active when in Logic Designer. Toggles a toolbar to nudge, rotate, flip, or change the order of an element. View > Show Unused Pins — Enable to display unconnected pins. Disable to eliminate unconnected pins from the view, for example when printing. 4-46 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 147 File Information The text entered here displays at the bottom right of a diagram when printing, provided that the Show Title Block option is enabled. Note the option to change the logo from the GE logo to your company logo. Display The panel sets how the element boxes display.
Page 148 The software displays the color specified when an element is on. There is no color when the element is off. The software displays another color when the status cannot be determined and is unknown. 4-48 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 149 Options display for filtering, such as recording timing for Virtual Inputs and Outputs, but not Communications Status. 4.4.6.4 COMTRADE waveforms Waveform files are viewable in the EnerVista software. The preferences are unrelated to Engineer and are outlined in the UR Family Communications Guide. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-49...
Page 150: Toolbars
4.4.7.2 Token Toolbox Drawing Tools Draw a line. Click and drag to draw. Draw multiple joined lines. Click and drag for each line. Double-click to finish. 4-50 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 151 Input from another UR device. Teleprotection inputs/outputs and direct inputs/outputs are mutually exclusive and cannot be used simultaneously. Teleprotection inputs/outputs and direct inputs/outputs are mutually exclusive and cannot be used simultaneously. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-51...
Page 152 Tag-In can is used to reference an existing Tag-Out. It joins another diagram to a previous diagram. Boolean Tokens These symbols are used to create FlexLogic Equations. Use them as intermediate logic for the Virtual Output equations. The display can vary from that shown here. 4-52 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 153 Place a positive one shot and a negative one shot symbol in the Logic Designer diagram Place a timer in the Logic Designer diagram Elements These blocks configure properties of the element or use element operands as input to FlexLogic equations. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-53...
Page 154 Set the width of the selected components to the same width as the reference component Same Height Set the height of the selected components to the same height as the reference component 4-54 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 155 Front, Back Moves current components to the absolute front or back of all viewable layers Forward, Backward Moves current components on layer higher or lower than its original layer hierarchy B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-55...
Page 156 FLEXLOGIC DESIGN AND MONITORING USING ENGINEER CHAPTER 4: INTERFACES 4-56 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 157: Settings
See page 5-90   FAULT REPORT  OSCILLOGRAPHY See page 5-91    USER-PROGRAMMABLE See page 5-93   LEDS  USER-PROGRAMMABLE See page 5-96   SELF TESTS B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 158  DIGITAL ELEMENTS See page 5-165    MONITORING See page 5-168    ELEMENTS  SETTINGS  CONTACT INPUTS See page 5-173   INPUTS / OUTPUTS  B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 159: Overview
CT. Use the secondary current base to convert per-unit settings to/from a secondary current value, and use the primary current base to convert to/from a primary current value. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 160 Not every operand of a given element in a UR relay generates events, only the major output operands. Elements, asserting output per phase, log operating phase output only, without asserting the common three-phase operand event. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 161: Product Setup
B90 FUNCTION and logic), download the same file to all the B90 IEDs, and modify the settings accordingly to finalize the application. This means that some modules, for example CT/VT module when set to "Logic," can become unusable. Communications and settings are typically modified when downloading the common B90 setting file.
Page 162  EVENTS: Disabled The B90 supports password entry from a local or remote connection. Local access is defined as access to settings or commands via the faceplate. This includes both keypad entry and the RS232 port. Remote access is defined as access to settings or commands via any rear communications port. This includes both Ethernet and RS485 connections.
Page 163 When entering a settings or command password via EnerVista or any serial interface, the user must enter the corresponding connection password. If the connection is to the back of the B90, the remote password must be used. If the connection is to the RS232 port of the faceplate, the local password must be used.
Page 164 FlexLogic operands are set to “On.” These operands are returned to the “Off” state upon expiration of the lockout. DENIED — This setting specifies the time that the B90 locks out password access after the number PASSWORD LOCKOUT DURATION of invalid password entries specified by the setting has occurred.
Page 165 CHAPTER 5: SETTINGS PRODUCT SETUP The B90 provides a means to raise an alarm upon failed password entry. If password verification fails while accessing a password-protected level of the relay (either settings or commands), the FlexLogic operand is UNAUTHORIZED ACCESS asserted.
Page 166 The EnerVista security system allows an administrator to manage access privileges of multiple users of EnerVista. It is disabled by default to allow access to the device immediately after installation. When security is disabled, all users have administrator access. GE recommends enabling the EnerVista security before placing the device in service. 5-10...
Page 167 If you force password entry by using this feature, ensure that you know the Administrator password. If you do not know the password and are locked out of the software, contact GE Grid Solutions for the default password of a UR device.
Page 168 The EnerVista security management system must be enabled (the Enable Security check box enabled) To modify user privileges: Select the Security > User Management item from the top menu to open the user management window. Locate the username in the User field. 5-12 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 169 This feature requires a CyberSentry software option. See the Order Codes section in chapter 2 for details. The EnerVista software provides the means to configure and authenticate the B90 access using either a server or the device. Access to functions depends on user role.
Page 170 When the "Device" button is selected, the B90 uses its local authentication database and not the RADIUS server to authenticate the user. In this case, it uses built-in roles (Administrator, Engineer, Supervisor, Operator, Observer, or Administrator and Supervisor when Device Authentication is disabled), as login accounts and the associated passwords are stored on the B90 device.
Page 171 For the Device > Settings > Product Setup > Supervisory option, the panel looks like the following. Figure 5-3: Supervisory panel For the Security panel, the following settings are available. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-15...
Page 172 Administrator is to re-enable Device authentication when Device authentication is disabled. To re-enable Device authentication, the Supervisor unlocks the device for setting changes, and then the Administrator can re- enable Device authentication. 5-16 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 173 Range: Administrator, Engineer, Supervisor,   None Operator, Factory (for factory use only), None  CHANGE LOCAL See page 5-18   PASSWORDS  SESSION See page 5-19   SETTINGS B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-17...
Page 174 • Observer — This role has read-only access to all B90 settings. This role allows unlimited concurrent access but it has no download access to any files on the device. Observer is the default role if no authentication has been done to the device.
Page 175 In Device authentication mode, the Observer role does not have a password associated with it. In Server authentication mode the Observer role requires a password. If you are locked out of the software, contact GE Grid Solutions for the default password. When using CyberSentry, the default password is "ChangeMe1#".
Page 176 SETTINGS  PRODUCT SETUP  SECURITY  SUPERVISORY  SELF TESTS  SELF TESTS  FAILED See below    AUTHENTICATE FIRMWARE LOCK: Range: Enabled, Disabled  Enabled SETTINGS LOCK: Range: Enabled, Disabled  Enabled 5-20 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 177 After making any required changes, log out. When changing settings offline, ensure that only settings permitted by the role that performs the settings download are changed because only those changes are applied. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-21...
Page 178 Clear Energy command (not applicable to all UR products) Clear Unauthorized Access command Clear Teleprotection Counters command (not applicable to all UR products) Clear All Relay Records command Role Log in Role Log off 5-22 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 179: Display Properties
CHAPTER 5: SETTINGS PRODUCT SETUP In addition to supporting syslog, a B90 with CyberSentry also saves the security events in two local security files, these being SECURITY_EVENTS.CSV and SETTING_CHANGES.LOG. Details on these files and how to retrieve them are available in the EnerVista software under Maintenance >...
Page 180: Clear Relay Records
Some customers prefer very low currents to display as zero, while others prefer the current to display even when the value reflects noise rather than the actual signal. The B90 applies a cut-off value to the magnitudes and angles of the measured currents.
Page 181: Communications
 SERIAL PORTS RS232 BAUD Range: 19200, 115200  RATE: 115200  RS485 COM2 BAUD Range: 300, 1200, 2400, 4800, 9600, 14400, 19200,  RATE: 19200 28800, 33600, 38400, 57600, 115200 bit/s B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-25...
Page 182 5.3.5.3 Ethernet network topology The B90 has three Ethernet ports. Each Ethernet port must belong to a different network or subnetwork. Configure the IP address and subnet to ensure that each port meets this requirement. Two subnets are different when the bitwise AND operation performed between their respective IP address and mask produces a different result.
Page 183 SCADA is provided through LAN2. P2 and P3 are connected to LAN2, where P2 is the primary channel and P3 is the redundant channel. In this configuration, P3 uses the IP and MAC addresses of P2. Figure 5-5: Multiple LANs, with redundancy B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-27...
Page 184 IP addresses and mask. Configure the network IP and subnet settings before configuring the routing settings. To obtain a list of all port numbers used, for example for audit purposes, contact GE technical support with substantiating information, such as the serial number and order code of your device.
Page 185 2 is performed. The delay in switching back ensures that rebooted switching devices connected to the B90, which signal their ports as active prior to being completely functional, have time to completely initialize themselves and become active. Once port 2 is active again, port 3 returns to standby mode.
Page 186 UR 7 redundancy Failover is selected for redundancy. 5.3.5.6 Parallel Redundancy Protocol (PRP) The B90 is provided with optional PRP capability. This feature is specified as a software option at the time of ordering. See the Order Codes section in chapter 2 for details.
Page 187 Host routes are not supported at present. The routing table configuration is available on the serial port and front panel. This is a deliberate decision, to avoid loss of connectivity when remotely configuring the B90. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-31...
Page 188 Starting with UR 7.10, up to six static network routes can be configured in addition to a default route. The default route configuration was also moved from the network settings into the routing section. The figure shows an example of topology that benefits from the addition of static routes. 5-32 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 189 Show routes and ARP tables This feature is available on the Web interface, where the main menu contains an additional Communications menu and two submenus: • Routing Table • ARP Table B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-33...
Page 190 0 disables Modbus over TCP/IP, meaning closes the Modbus TCP port. When the port number is changed to 0, the change takes effect when the B90 is restarted. When it is set to 0, use the front panel or serial port to communicate with the relay.
Page 191  DNP PROTOCOL  DNP CHANNELS See below    DNP ADDRESS: Range: 0 to 65535 in steps of 1   DNP NETWORK See below   CLIENT ADDRESSES B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-35...
Page 192 Range: 1, 2, 5, 6  DEFAULT VARIATION: 1 DNP OBJECT 21 Range: 1, 2, 9, 10  DEFAULT VARIATION: 1 DNP OBJECT 22 Range: 1, 2, 5, 6  DEFAULT VARIATION: 1 5-36 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 193 DNP ADDRESS unique address to each DNP slave. The B90 can specify a maximum of five clients for its DNP connections. These are IP addresses for the controllers to which the B90 can connect. The settings follow. SETTINGS  PRODUCT SETUP  COMMUNICATIONS  DNP PROTOCOL  DNP NETWORK CLIENT ADDRESSES ...
Page 194 DNP analog input points that are voltages are returned with values 1000 times smaller (for example, a value of 72000 V on the B90 is returned as 72). These settings are useful when analog input values must be adjusted to fit within certain ranges in DNP masters.
Page 195 DNP TCP connection for greater than the time specified by this setting, the connection is aborted by the B90. This frees up the connection to be re-used by a client. Any change takes effect after cycling power to the relay.
Page 196 The maximum number of simultaneous clients supported by the UR family is five. EnerVista setup for IEC 61850 The EnerVista UR Setup software provides the interface to configure B90 settings for the IEC 61850 protocol. This section describes this interface. The software also supports import/export and merging of IEC 61850 Substation Configuration Language (SCL) files as documented in the UR Family Communications Guide.
Page 197 Figure 5-10: IEC 61850 panel Opening the IEC 61850 window while online causes the UR Setup software to retrieve and import an SCL file from the B90. This System Configuration Description (SCD) file contains all the settings in the UR at the time of the file request, both those that are mapped into the IEC 61850 information model (that is, the "public"...
Page 198 When the Save button is clicked in the online IEC 61850 window, UR Setup software prepares a configured IED description (CID) file containing all the settings of the UR and sends the CID file to the B90. Upon receipt, the B90 checks the CID file for correctness, going out of service, then back into service when the CID file is accepted.
Page 199 Default: TEMPLATE The value entered sets the IED name used by IEC 61850 for the B90. An IED name unique within the network must be entered for proper operation. Valid characters are upper and lowercase letters, digits, and the underscore (_) character.
Page 200 Range: status-only, direct-with-normal-security, sbo-with-normal-security Default: sbo-with-normal-security This setting specifies the control service that clients must use to control the TEST MODE FUNCTION of the B90. An "on" control to <LDName>/LLN0.Mod changes TEST MODE FUNCTION to Disabled, an "on-blocked" control changes it to Forcible, and a "test/blocked"...
Page 201 Protection logical device has been set to instance name "Prot", the function-related name "Feeder1Prot" and the configuration revision "2016-03-07 08:46." The text is clipped on the right if the line is longer than the available width. The next paragraphs explain how to do this setup. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-45...
Page 202 Figure 5-14: Menu for logical node If the insert option is selected, or the edit option is selected for other than the Master logical device, a logical device parameters edit dialog opens. 5-46 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 203 Each logical device inst name is required to be unique within the device, and it cannot be blank. Also, if the corresponding functional ldName setting is blank, the concatenation of the IED name and the logical device B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-47...
Page 204 The UR increments the value of paramRev by one whenever one or multiple setting changes occurs in one Modbus write request by any means (front panel, Modbus, or MMS) other than by SCL file 5-48 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 205 Routable GOOSE (R-GOOSE) is supported in firmware release 7.4 and later. Routable GOOSE allows UR and other devices to be located in separate networks. Encryption/decryption of messages is performed by a separate gateway device. Messages are routed using a separate router, using IP addresses. Note the following behavior: B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-49...
Page 206 A.3; the UR always uses the ASN.1 Basic encoding rules (as specified in ISO/IEC 8825-1) as specified in IEC 61850 edition 1.0 and as optional in IEC 61850 edition 2.0. 5-50 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 207 TxGOOSE1 messages from other GOOSE messages. <LDName> is a syntactic variable that is set to the value of setting Master functional ldName if one or more characters have been entered to that setting, otherwise the value of setting IED NAME suffixed with "Master". B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-51...
Page 208 Network devices can forward a message with a higher priority value before a message with a lower priority value, which speeds delivery of high-priority messages in heavily loaded networks. The standard recommends that higher-priority messages, such as GOOSE, have priority values in the range of 4 to 7. 5-52 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 209 Range: 1 to 60 s in steps of 1 s Default: 60 s This setting specifies the time interval between heartbeat messages, meaning messages that are sent periodically while no events are detected. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-53...
Page 210 61850-90-5 R GOOSE service can be subscribed to. The UR accepts both the variable length encoded GOOSE messages specified IEC 61850 8 1:2004 and the Fixed-Length encoded GOOSE messages as specified in IEC 61850 8 1:2011 clause A.3. 5-54 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 211 If the publisher is a UR 7.3x series device, this setting needs match the value of the publisher's TxGOOSE GoID setting. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-55...
Page 212 <GoCBName> is the name of the publishing control block. The B90 translates the ACSI format required for this setting to the MMS format used in GOOSE messages: <LDName>/LLN0$GO$<GoCBName> If the publisher is a UR 7.3x or 7.40 series device, <LDName> is the value of the publisher's Master functional ldName setting if that setting is not empty, otherwise it is the value of the publisher's IED NAME suffixed with "Master".
Page 213 If the publisher is a UR 7.3x or 7.40 series device, set these settings to match the basic type of the members of the publisher's data set selected by the publisher's TxGOOSE datSet setting. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-57...
Page 214 SCD (supported in version 7.40 and later). When the file format is SCD, the system lists all IEDs inside the SCD file and lets the user select the ones to add. The figure shows a selection being made by importing a CID file using the Add IED function. 5-58 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 215 This setting selects the logic state for the RxGOOSE Boolean1 FlexLogic operand if the UR has just completed startup and the selected RxGOOSE has not yet received a message, or the selected RxGOOSE has lost its connectivity with the publisher. The following choices are available: B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-59...
Page 216 Default: None This setting selects the GOOSE message containing the value that drives the RxGOOSE DPS1 FlexLogic operand. If set to None, the RxGOOSE DPS1 FlexLogic operand assumes its default state. 5-60 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 217 (supported in version 7.40 and later). When the file format is SCD, the system lists all IEDs inside the SCD file and lets the user select the ones to add. Figure 5-22: RxGOOSE Analog Inputs panel There are 32 RxGOOSE analog inputs. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-61...
Page 218 Range: 0.000 to 1000000000.000 in steps of 0.001 Default: 1.000 This setting specifies the per-unit base value for other B90 features to use with the RxGOOSE Analog1 operand. A FlexElement for instance subtracts two quantities after converting their values to integers rescaled to a common base, the common base being the largest of the base values of the two quantities.
Page 219 RptEna attribute is false. Buffered and unbuffered reports Navigate to Settings > Product Setup > Communications > IEC 61850 > Reports > Buffered Reports or Unbuffered Reports. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-63...
Page 220 Also, the control block can be configured to send integrity reports containing the present value of all members either on demand from the client or periodically. A TCP handshaking mechanism causes messages that are not read and acknowledged by the client to be retransmitted. 5-64 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 221 Control blocks and data sets can be pre-configured by sending the B90 a CID file. See the UR Family Communications Guide for details. EnerVista UR Setup also can be used to select the data set members and to pre-configure the control blocks.
Page 222 This setting selects the data set whose members' status is reported in Unbuffered Report1 messages using the UR Setup software designator for the data set. The IEC 61850 name of the data sets are configured in the Datasets panel, as described later. 5-66 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 223 DataSets Navigate to Settings > Product Setup > Communications > IEC 61850 > DataSets. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-67...
Page 224 The DataSet name is not copied or pasted. In short, use this feature to copy a DataSet Member setting and paste it into another Member setting, a text file, or Word, as examples. 5-68 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 225 Select the member from the drop-down list. Or right-click an entry to copy, paste, delete, or insert. Product setup Navigate to Settings > Product Setup > Communications > IEC 61850 > Product Setup. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-69...
Page 226 Deadband parameters of measured values related to the Energy metering are configured here. Real Time Clock Navigate to Settings > Product Setup > Communications > IEC 61850 > Product Setup > Real Time Clock. 5-70 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 227 However, a tabulation of the analog values and their associated deadband setting can be found in the UR Family Communications Guide. Figure 5-29: Deadband settings with .db suffix B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-71...
Page 228 61850 deadband interval in primary units. Until the relay restarts, for some quantities, the deadband interval in primary units calculated for the previous settings remains in effect. Signal sources Deadband parameters of measured values related to the signal sources are configured here. 5-72 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 229 Navigate to Settings > Product Setup > Communications > IEC 61850 > Settings for Commands to access the settings that configure the IEC 61850 protocol interface for record clear commands. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-73...
Page 230 This setting selects the control model clients must use to successfully control the command CLEAR FAULT REPORTS. "sbo" here is select-before-operate. Enhanced security means that the B90 reports to the client the breaker 1 position at the end of the command sequence.
Page 231 Virtual Inputs are controllable FlexLogic operands that can be controlled via IEC 61850 commands to GGIO2, by DNP, by Modbus, and by the UR front panel. The settings related to these IEC 61850 commands are described here. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-75...
Page 232 Navigate to Settings > Product Setup > Communications > IEC 61850 > GGIO > GGIO4 > GGIO4.AnIn1 to access the settings for the first GGIO4 value. The settings and functionality for the others are similar. 5-76 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 233 <LDName>/GGIO4.AnIn01.instMag.f. This setting is stored as an IEEE 754 / IEC 60559 floating point number. Because of the large range of this setting, not all possible values can be stored. Some values are rounded to the closest possible floating point number. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-77...
Page 234 CHAPTER 5: SETTINGS File transfer by IEC 61850 The B90 supports file transfer by IEC 61850. The approach is as follows, using the SISCO AX-S4 61850 client software as an example. In the AX-S4 61850 Explorer window, click the Tools menu and access the SISCO File Transfer Utility.
Page 235 NUMBER: 0 The Trivial File Transfer Protocol (TFTP) can be used to transfer files from the B90 over a network. The B90 operates as a TFTP server. TFTP client software is available from various sources, including Microsoft Windows NT. The dir.txt file obtained from the B90 contains a list and description of all available files, for example event records and oscillography.
Page 236 COMMUNICATIONS  PROTOCOL connected to a maximum of two masters (usually either an RTU or a SCADA master station). Since the B90 maintains two sets of IEC 60870-5-104 data change buffers, ideally no more than two masters actively communicate with the B90 at one time.
Page 237 0.0.0.0 The B90 can specify a maximum of five clients for its IEC 104 connections. These are IP addresses for the controllers to which the B90 can connect. A maximum of two simultaneous connections are supported at any given time.
Page 238 PTP, or SNTP, its time is overwritten by these three sources, if any of them is active. If the synchronization timeout occurs and none of IRIG-B, PTP, or SNTP is active, the B90 sets the invalid bit in the time stamp of a time-tagged message.
Page 239 — The configuration field TYP indicates how many measurands are present in the corresponding TYPE IDENTIFICATION (TYP) ASDU. Each ASDU can take either 4 or 9 measurands maximum, depending on the type identification (3 respectively 9). B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-83...
Page 240 FlexAnalog operands. The measurands sent are voltage, current, power, power factor, and frequency. If any other FlexAnalog is chosen, the B90 sends 0 instead of its value. Note that the power is transmitted in KW, not W. Measurands are transmitted as ASDU 3 or ASDU 9 (type identification value set to measurands I, respectively measurands II).
Page 241 Commands are received as General Command (Type Identification 20). The user can configure the action to perform when an ASDU command comes. A list of available mappings is provided on the B90. This includes 64 virtual inputs (see the following table). The ON and OFF for the same ASDU command can be mapped to different virtual inputs.
Page 242: Modbus User Map
ADDRESS The UR Family Communications Guide outlines the Modbus memory map. The map is also viewable in a web browser; enter the IP address of the B90 in a web browser and click the option. 5.3.7 Real-time clock 5.3.7.1 Menu SETTINGS ...
Page 243 Setup for IRIG-B is illustrated in the Installation chapter. For the Other protocols, whenever a time synchronization message is received through any of the active protocols, the B90 clock updates. However, given that IEC 60870-5-103, IEC 60870-5-104, Modbus, and DNP are low-accuracy time synchronization methods, avoid their use for synchronization when better accuracy time protocols, such as IRIG-B and PTP, are active in the system.
Page 244 PRODUCT SETUP CHAPTER 5: SETTINGS The B90 supports the Precision Time Protocol (PTP) specified in IEEE Std 1588 2008 using the Power Profile (PP) specified in IEEE Std C37.238 2011. This enables the relay to synchronize to the international time standard over an Ethernet network that implements PP.
Page 245 B90 clock is closely synchronized with the SNTP/ NTP server. It takes up to two minutes for the B90 to signal an SNTP self-test error if the server is offline.
Page 246: User-Programmable Fault Report
 2:00 The B90 maintains two times: local time and Universal Coordinated Time (UTC). Local time can be provided by IRIG-B signals. UTC time is provided by SNTP servers. The real-time clock (RTC) and time stamps reported in historical records and communication protocols can be incorrect if the Local Time settings are not configured properly.
Page 247: Oscillography
The user programmable record contains the following information: the user-programmed relay name, detailed firmware revision (x.xx, for example) and relay model (B90), the date and time of trigger, the name of pre-fault trigger (a specific FlexLogic operand), the name of fault trigger (a specific FlexLogic operand), the active setting group at pre-fault trigger, the active setting group at fault trigger, pre-fault values of all programmed analog channels (one cycle before pre-fault trigger), and fault values of all programmed analog channels (at the fault trigger).
Page 248 — This setting selects the FlexLogic operand state recorded in an oscillography trace. The length of DIGITAL 1(63) CHANNEL each oscillography trace depends in part on the number of parameters selected here. Parameters set to “Off” are ignored. 5-92 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 249: User-Programmable Leds
When enabled, the LED test can be initiated from any digital input or user-programmable condition, such as a user- programmable pushbutton. The control operand is configured under the setting. The test covers all LED TEST CONTROL LEDs, including the LEDs of the optional user-programmable pushbuttons. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-93...
Page 250 The control pulses must last at least 250 ms to take effect. The following diagram explains how the test is executed. Figure 5-38: LED test sequence Application example 1 Assume one needs to check if any of the LEDs is “burned” through user-programmable pushbutton 1. Apply the following settings. 5-94 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 251 LED column 4 — User-programmable LEDs 25 through 36 • LED column 5 — User-programmable LEDs 37 through 48 See the LED Indicators section in chapter 4 for information on the location of these indexed LEDs. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-95...
Page 252: User-Programmable Self-Tests
Range: Disabled, Enabled  FUNCTION: Enabled All major self-test alarms are reported automatically with their corresponding FlexLogic operands, events, and targets. Most of the minor alarms can be disabled if so wanted. 5-96 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 253: Control Pushbuttons
The location of the control pushbuttons are shown in the following figures. Figure 5-39: Control pushbuttons (enhanced faceplate) An additional four control pushbuttons are included on the standard faceplate when the B90 is ordered with the 12 user- programmable pushbutton option.
Page 254: User-Programmable Pushbuttons
PUSHBTN 1 REMOTE: Range: FlexLogic operand  PUSHBTN 1 LOCAL: Range: FlexLogic operand  PUSHBTN 1 DROP-OUT Range: 0 to 60.00 s in steps of 0.05  TIME: 0.00 s 5-98 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 255  EVENTS: Disabled The B90 is provided with this optional feature, specified as an option at the time of ordering. Using the order code for your device, see the order codes in chapter 2 for details. User-programmable pushbuttons provide an easy and error-free method of entering digital state (on, off) information. The number of available pushbuttons is dependent on the faceplate module ordered with the relay.
Page 256 — This setting specifies the top 20-character line of the user-programmable message and is intended to PUSHBTN 1 ID TEXT provide ID information of the pushbutton. See the User-definable Displays section for instructions on how to enter alphanumeric characters from the keypad. 5-100 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 257 MESSAGE — If this setting is enabled, each pushbutton state change is logged as an event into the event PUSHBUTTON 1 EVENTS recorder. The figures show the user-programmable pushbutton logic. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-101...
Page 258 PRODUCT SETUP CHAPTER 5: SETTINGS Figure 5-44: User-programmable pushbutton logic (Sheet 1 of 2) 5-102 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 259: Flex State Parameters
16 states are readable in a single Modbus register. The state bits can be configured so that all states of interest are available in a minimum number of Modbus registers. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-103...
Page 260: User-Definable Displays
Range: up to 20 alphanumeric characters  DISP 1 ITEM 1: Range: 0 to 65535 in steps of 1   DISP 1 ITEM 5: Range: 0 to 65535 in steps of 1  5-104 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 261 If the parameters for the top line and the bottom line items have the same units, then the unit is displayed on the bottom line only. The units are only displayed on both lines if the units specified both the top and bottom line items are different. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-105...
Page 262: Direct Inputs And Outputs
B90 supports 96 Direct I/Os at 64 or 128 kbps rate and 256 Direct I/Os at 213 kbps rate. With 64 or 128 kbps rate, the B90 can exchange Direct I/Os with other URs, while at 213 kbps B90s can exchange between each other's only. Functionality at 213 kbps is possible only with firmware 7.4 or higher and with CPU FPGA revision 2.02 or higher.
Page 263 DIRECT I/O DATA RATE setting applies to a B90 with dual-channel communication cards and allows crossing DIRECT I/O CHANNEL CROSSOVER over messages from channel 1 to channel 2. This places all UR-series IEDs into one direct input and output network regardless of the physical media of the two communication channels.
Page 264 2, 3, and 4, to the upstream device that monitors a single incomer of the busbar, as shown. Figure 5-47: Sample interlocking busbar protection scheme For increased reliability, a dual-ring configuration (shown as follows) is recommended for this application. 5-108 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 265 The complete application requires addressing a number of issues, such as failure of both the communications rings, failure or out-of-service conditions of one of the relays, and so on. Self-monitoring flags of the direct inputs and outputs feature primarily are used to address these concerns. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-109...
Page 266 Inputs and Outputs section. Implement a blocking pilot-aided scheme with more security and, ideally, faster message delivery time. This is accomplished using a dual-ring configuration as shown here. 5-110 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 267 EVENTS: Disabled The B90 checks integrity of the incoming direct input and output messages using a 32-bit CRC. The CRC alarm function is available for monitoring the communication medium noise by tracking the rate of messages failing the CRC check. The monitoring function counts all incoming messages, including messages that failed the CRC check.
Page 268: Installation
 EVENTS: Disabled The B90 checks integrity of the direct input and output communication ring by counting unreturned messages. In the ring configuration, all messages originating at a given device should return within a pre-defined period of time. The unreturned messages alarm function is available for monitoring the integrity of the communication ring by tracking the rate of unreturned messages.
Page 269: System Setup
Range: 1 A, 5 A  This menu configures the AC current inputs. Upon power up, the B90 recognizes all the AC modules loaded in its chassis and populates the above menu accordingly. The current terminals are denoted in the following format: Xa, where X = {F, L, S} and a = (1, 2,..., 8}. X represents the chassis slot containing the AC input module and a represents the AC channel of each module.
Page 270: Flexcurves
FlexCurve, enter the reset and operate times (using the keys) for each selected pickup point (using the VALUE up/down keys) for the required protection curve (A, B, C, or D). MESSAGE 5-114 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 271 The recloser curve configuration window shown here appears when the Initialize From setting in the EnerVista software is set to “Recloser Curve” and the Initialize FlexCurve button is clicked. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-115...
Page 272 MRT and from then onwards the operating time remains at 200 ms. Figure 5-53: Composite recloser curve with HCT disabled With the HCT feature enabled, the operating time reduces to 30 ms for pickup multiples exceeding eight times pickup. 5-116 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 273 EnerVista software generates an error message and discards the proposed changes. 5.4.3.5 Standard recloser curves The following graphs display standard recloser curves available for the B90. Figure 5-55: Recloser curves GE101 to GE106 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 274 SYSTEM SETUP CHAPTER 5: SETTINGS Figure 5-56: Recloser curves GE113, GE120, GE138, and GE142 Figure 5-57: Recloser curves GE134, GE137, GE140, GE151, and GE201 5-118 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 275 CHAPTER 5: SETTINGS SYSTEM SETUP Figure 5-58: Recloser curves GE131, GE141, GE152, and GE200 Figure 5-59: Recloser curves GE133, GE161, GE162, GE163, GE164, and GE165 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-119...
Page 276 SYSTEM SETUP CHAPTER 5: SETTINGS Figure 5-60: Recloser curves GE116, GE117, GE118, GE132, GE136, and GE139 Figure 5-61: Recloser curves GE107, GE111, GE112, GE114, GE115, GE121, and GE122 5-120 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 277: Bus
See the Order Codes section in chapter 2 for information on the maximum number of zones and inputs for a given B90 model. Six bus differential zones are available. Each zone is associated with its own bus differential protection and CT trouble monitoring elements.
Page 278 BUS ZONE 1A(X) STATUS Figure 5-63: Bus zone direction setting For example, assume that B90 IED 4 is used for isolator monitoring while IEDs 1, 2, and 3 are used for protection. Consequently, the setting of IED 4 must be set to “Logic” while...
Page 279: Flexlogic
FlexLogic. In general, the system receives analog and digital inputs that it uses to produce analog and digital outputs. The figure shows major subsystems of a generic UR-series relay involved in this process. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-123...
Page 280 Figure 5-65: UR architecture overview The states of all digital signals used in the B90 are represented by flags (or FlexLogic operands, which are described later in this section). A digital “1” is represented by a set flag. Any external contact change-of-state can be used to block an element from operating, as an input to a control feature in a FlexLogic equation, or to operate a contact output.
Page 281 The following table lists the operands available for the relay. The operands can be viewed online by entering the IP address of the relay in a web browser and accessing the Device Information Menu. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-125...
Page 282 CT trouble has been detected for bus differential zone 4 CT TROUBLE 5 OP CT trouble has been detected for bus differential zone 5 CT TROUBLE 6 OP CT trouble has been detected for bus differential zone 6 5-126 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 283 (does not appear unless ordered) Contact outputs, Cont Op 2 (does not appear unless ordered) ↓ ↓ current (from detector on Cont Op 64 (does not appear unless ordered) form-A output only) B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-127...
Page 284 Asserted when remote command access is disabled ACCESS REM CMND ON Asserted when remote command access is enabled UNAUTHORIZED ACCESS Asserted when a password entry fails while accessing a password protected level of the B90 5-128 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 285 ID of any of these operands, the assigned name appears in the relay list of operands. The default names are shown in the FlexLogic operands table. The characteristics of the logic gates are tabulated in the following table, and the operators available in FlexLogic are listed in the FlexLogic operators table. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-129...
Page 286: Flexlogic Rules
Assigning the output of an operator to a virtual output terminates the equation. A timer operator (for example, "TIMER 1") or virtual output assignment (for example, " = Virt Op 1") can be used once 5-130 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 287: Flexlogic Evaluation
Inspect each operator between the initial operands and final virtual outputs to determine if the output from the operator is used as an input to more than one following operator. If so, the operator output must be assigned as a virtual output. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-131...
Page 288 Figure 5-68: Logic for virtual output 3 Prepare a logic diagram for virtual output 4, replacing the logic ahead of virtual output 3 with a symbol identified as virtual output 3, shown as follows. 5-132 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 289 Assume for this example that the state is to be ON for a closed contact. The operand is therefore “Cont Ip H1c On”. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-133...
Page 290 [89] DIG ELEM 1 PKP [90] XOR(2) [91] Virt Op 3 On [92] OR(4) [93] LATCH (S,R) [94] Virt Op 3 On [95] TIMER 1 [96] Cont Ip H1c On 5-134 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 291 Virt Op 2 On Virt Ip 1 On DIG ELEM 1 PKP XOR(2) Virt Op 3 On OR(4) LATCH (S,R) Virt Op 3 On TIMER 1 Cont Ip H1c On OR(3) B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-135...
Page 292: Flexlogic Equation Editor
LATCH 1 ID: Range: up to 20 alphanumeric characters  NV Latch 1 LATCH 1 TYPE: Range: Reset Dominant, Set Dominant  Reset Dominant LATCH 1 SET: Range: FlexLogic operand  5-136 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 293: Grouped Elements
The active setting group can be preset or selected in the menu (see the Control Elements section SETTING GROUPS later in this chapter). See also the Introduction to Elements section at the beginning of this chapter. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-137...
Page 294: Setting Group 1
BUS ZONE 1 DIF BLK: Range: FlexLogic operand  BUS ZONE 1 DIF Range: Self-reset, Latched, Disabled  TARGET: Latched BUS ZONE 1 DIF Range: Disabled, Enabled  EVENTS: Disabled 5-138 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 295 Operation of this element is completely dependent on the dynamic bus replica which must be first defined under bus zone 1. The bus differential element 1 protects the differential zone defined as bus zone 1. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-139...
Page 296 The unbiased (high set) differential function can be virtually disabled by setting its operating threshold, , very high. HIGH SET — This setting defines the drop-out time of the seal-in timer applied to the FlexLogic BUS ZONE 1 DIF SEAL-IN BUS 1 OP operand. 5-140 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 297 BF function to isolate the entire zone of busbar protection. More information on the bus zone differential settings can be found in the Application of Settings chapter. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-141...
Page 298 GROUPED ELEMENTS CHAPTER 5: SETTINGS Figure 5-75: Bus zone 1 differential logic 5-142 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 299: Breaker Failure (Ansi 50Bf)
BF1 TIMER 3 PICKUP Range: 0.000 to 65.535 s in steps of  DELAY: 0.000 s 0.001 BF1 BKR POS1: Range: FlexLogic operand  BF1 BKR POS2: Range: FlexLogic operand  B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-143...
Page 300 “Protection.” Breaker failure logic is based on status information and is available if the PRODUCT SETUP  B90 FUNCTION  setting is “Logic.” The Breaker failure element requires B90 fiber optic interconnection and proper B90 FUNCTION configuration of the breaker failure and direct input/output settings. See the Application of Settings chapter for details.
Page 301 FlexLogic operands that initiate tripping required to clear the faulted zone. The trip output can be sealed-in for an adjustable period. • Target message indicating a failed breaker has been declared • Illumination of the face plate TRIP LED B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-145...
Page 302 — If set to "Yes", the element is sealed-in if current flowing through the breaker is above the supervision BF1 USE SEAL-IN pickup level. — This setting selects the B90 Remote Inputs that represent operation of the current BF1 AMP SUPV OP A through C supervision elements on phase A, B, or C.
Page 303 BF1 AMP LOSET PICKUP lowest expected fault current on the protected breaker, after a breaker opening resistor is inserted approximately 90% of resistor current). Figure 5-76: Breaker failure current supervision logic B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-147...
Page 304 GROUPED ELEMENTS CHAPTER 5: SETTINGS Figure 5-77: Breaker failure logic 5-148 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 305 DIRECT INPUT 3 BIT NUMBER : "2" (message received from IED 2) DIRECT INPUT 4 DEVICE : "13" (this is BKRSUPV 3 SUPV OP for Phase B) DIRECT INPUT 4 BIT NUMBER B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-149...
Page 306 BF 3 AMP LOSET OP C The B90 current supervision elements reset in less than 0.7 of a power cycle up to the multiple of pickup of 100 (threshold set at 0.01 of the actual fault current) as in the following figure.
Page 307: Voltage Elements
The relay uses sophisticated algorithms to speed up the reset time of the breaker failure overcurrent supervision. Caution must be paid when testing the B90 for BF reset times. In particular, the current must be interrupted in a way resembling the actual breaker operation (zero-crossing).
Page 308: Current Elements
 OVERCURRENT 24 5.6.6.2 Inverse TOC curve characteristics The inverse time overcurrent curves used by the time overcurrent elements are the IEEE, IEC, GE Type IAC, and I t standard curve shapes. This allows for simplified coordination with downstream devices.
Page 309 22.682 9.522 3.647 2.002 1.297 0.927 0.709 0.569 0.474 0.407 45.363 19.043 7.293 4.003 2.593 1.855 1.418 1.139 0.948 0.813 90.727 38.087 14.587 8.007 5.187 3.710 2.837 2.277 1.897 1.626 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-153...
Page 310 IEC (BS) curve shape IEC Curve A (BS142) 0.140 0.020 IEC Curve B (BS142) 13.500 1.000 43.2 IEC Curve C (BS142) 80.000 2.000 58.2 IEC Short Inverse 0.050 0.040 0.500 5-154 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 311 The curves for the General Electric type IAC relay family are derived from the formulae: Eq. 5-7 where T = operate time (in seconds) TDM = Multiplier setting I = Input current = Pickup Current setting B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-155...
Page 312 0.569 0.419 0.368 0.341 0.325 0.314 0.307 0.301 0.296 1.145 0.759 0.559 0.490 0.455 0.434 0.419 0.409 0.401 0.394 10.0 1.431 0.948 0.699 0.613 0.569 0.542 0.524 0.511 0.501 0.493 5-156 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 313 IOC1 FUNCTION: Range: Disabled, Enabled   OVERCURRENT 1 Disabled IOC1 CT: Range: Available current channels  IOC1 PICKUP: Range: 0.020 to 30.000 pu in steps of 0.001  1.200 pu B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-157...
Page 314 FlexLogic operands are passed between the IEDs using the B90 fiber optic communications (Direct I/Os). Instantaneous Overcurrent supervision can also be used to prevent tripping feeders with low currents or for definite time backup protection.
Page 315: End Fault Protection
Range: 0.000 to 65.535 s in steps of 0.001  0.400 s EFP1 MANUAL CLOSE: Range: FlexLogic operand  EFP1 PICKUP DELAY: Range: 0.000 to 65.535 s in steps of 0.001  0.040 s B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-159...
Page 316 — This setting is a FlexLogic operand indicating an open breaker. The operand shall be "On" when the EFP1 BREAKER OPEN breaker is open. Typically, this setting is a position of an appropriately wired input contact of the B90. — This setting specifies a timed delay between the breaker position being declared as open by the EFP1 EFP1 BKR DELAY BREAKER OPEN setting and the moment the EFP scheme is armed.
Page 317 Therefore, the close status of the isolator shall be used as the block setting. Figure 5-84: End fault protection and bypass isolators Figure 5-85: End fault protection logic B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-161...
Page 318: Control Elements
If more than one operate-type operand is required, it can be assigned directly from the trip bus menu. 5-162 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 319 RESET OP operand is pre-wired to the reset gate of the latch, As such, a reset command from the front panel interface or via communications resets the trip bus output. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-163...
Page 320: Setting Groups
Prevents the active setting group from changing when the selected FlexLogic operand is "On." This SETTING GROUPS BLK — can be useful in applications where it is undesirable to change the settings under certain conditions, such as during a control sequence. 5-164 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 321: Digital Elements
FlexLogic operand, and a timer for pickup and reset delays for the output operand. — Selects a FlexLogic operand to be monitored by the digital element. DIGITAL ELEMENT 1 INPUT B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-165...
Page 322 In most breaker control circuits, the trip coil is connected in series with a breaker auxiliary contact that is open when the breaker is open (see figure). To prevent unwanted alarms in this situation, the trip circuit monitoring logic must include the breaker position. 5-166 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 323 Using the contact input settings, this input is given an ID name, for example, “Cont Ip 1," and is set “On” when the breaker is closed. The settings to use digital element 1 to monitor the breaker trip circuit are indicated (EnerVista example shown). B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-167...
Page 324: Monitoring Elements
5.7.5 Monitoring elements 5.7.5.1 Menu SETTINGS  CONTROL ELEMENTS  MONITORING ELEMENTS  MONITORING  CT TROUBLE ZONE 1 See below   ELEMENTS   5-168 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 325 CT Trouble is declared for the given phase by setting the appropriate FlexLogic output operand. The operand may be configured to raise an alarm and block the bus differential function for the corresponding zone of protection. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-169...
Page 326 Range: 0.00 to 120.00 s in steps of 0.05  DELAY: 0.05 s ISOLATOR 1 RESET: Range: FlexLogic operand  ISOLATOR 1 Range: Self-Reset, Latched, Disabled  TARGET: Self-Reset ISOLATOR 1 Range: Disabled, Enabled  EVENTS: Disabled 5-170 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 327 Bus protection zone discrimination depends heavily on reliable isolator position feedback. Therefore, two isolator auxiliary contacts – normally open and normally closed – must confirm the status of the isolator via the B90 contact inputs. This element responds to both normally open and normally closed auxiliary contacts of an isolator or a tie-breaker in order to assert the actual position of the isolator for the dynamic bus image.
Page 328 CONTROL ELEMENTS CHAPTER 5: SETTINGS Figure 5-93: Isolator monitoring logic Figure 5-94: Isolator monitoring sample timing diagram 5-172 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 329: Inputs/Outputs
The DC input voltage is compared to a user-settable threshold. A new contact input state must be maintained for a user-settable debounce time in order for the B90 to validate the new contact state. In the following figure, the debounce time is set at 2.5 ms;...
Page 330 For example, to use contact input H5a as a status input from the breaker 52b contact to seal-in the trip relay and record it in the Event Records menu, make the following settings changes: 5-174 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 331: Virtual Inputs
FlexLogic equation, it likely needs to be lengthened in time. A FlexLogic timer with a delayed reset can perform this function. Figure 5-96: Virtual inputs logic B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-175...
Page 332: Contact Outputs
: any suitable FlexLogic operand OUTPUT H1 OPERATE “Cont Op 1 OUTPUT H1 SEAL-IN IOn” : “Enabled” CONTACT OUTPUT H1 EVENTS Figure 5-97: Contact input/output module type 6A contact 1 logic 5-176 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 333 Figure 5-98: Contact input/output module type 4L contact 1 logic Application example 1 A latching output contact H1a is to be controlled from two user-programmable pushbuttons (buttons number 1 and 2). The following settings are applied. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-177...
Page 334 (assuming an H4L module): OUTPUTS  CONTACT OUTPUT H1a CONTACT OUTPUT H1c : “VO1” OUTPUT H1a OPERATE : “VO4” OUTPUT H1a RESET : “VO2” OUTPUT H1c OPERATE : “VO3” OUTPUT H1c RESET 5-178 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 335: Virtual Outputs
The command can be sent from the faceplate RESET button, a remote device via a communications channel, or any selected operand. RESET B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-179...
Page 336: Direct Inputs And Outputs
— This setting allows the user to assign a descriptive name to the direct output. DIRECT OUT 1 NAME — This sets the FlexLogic operand that determines the state of this direct output. DIR OUT 1 OPERAND 5-180 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 337 The following settings are applied (assume Bit 3 is used by all 3 devices to send the blocking signal and Direct Inputs 7, 8, and 9 are used by the receiving device to monitor the three blocking signals). UR IED 2: B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-181...
Page 338 Assume the Hybrid Permissive Overreaching Transfer Trip (Hybrid POTT) scheme is applied using the architecture shown as follows. The scheme output operand is used to key the permission. HYB POTT TX1 Figure 5-102: Single-channel open-loop configuration 5-182 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 339 In three-terminal applications, both the remote terminals must grant permission to trip. Therefore, at each terminal, direct inputs 5 and 6 are ANDed in FlexLogic and the resulting operand configured as the permission to trip ( HYB POTT RX1 setting). B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-183...
Page 340: Testing
 FUNCTION: Disabled The B90 provides a test facility to verify the functionality of contact inputs and outputs, some communication functions and the phasor measurement unit (where applicable), using simulated conditions. The test mode can be in any of three states: Disabled, Isolated, or Forcible.
Page 341: Force Contact Inputs
FORCE Cont Op xx Range: Normal, Energized, De-energized, Freeze  : Normal The force contact outputs feature provides a method of performing checks on the function of all contact outputs. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-185...
Page 342 While the selected operand is Off, the output behaves as it does when in service. On restart, the setting and the force contact input and force contact output settings revert to TEST MODE FORCING their default states. 5-186 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 343: Actual Values
See page 6-5   STATISTICS  FLEX STATES See page 6-5    ETHERNET See page 6-6    REAL TIME CLOCK See page 6-6   SYNCHRONIZING B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 344: Front Panel
The front panel can be viewed and used in the EnerVista software, for example to view an error message displayed on the front panel. To view the front panel in EnerVista software: Click Actual Values > Front Panel. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 345: Status
For example, ‘Virt Ip 1’ refers to the virtual input in terms of the default name. The second line of the display indicates the logic state of the virtual input. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 346: Rxgoose Boolean Inputs
Range: On, Off  STATUS: Off The B90 is provided with optional IEC 61850 capability. This feature is specified as a software option at the time of ordering. See the Order Codes section of chapter 2 for details. 6.3.4 RxGOOSE DPS inputs ACTUAL VALUES ...
Page 347: Rxgoose Status
 Offline The B90 is provided with optional IEC 61850 capability. This feature is specified as a software option at the time of ordering. See the Order Codes section of chapter 2 for details. actual value does not consider RxGOOSE that are not configured or are not used by any RxGOOSE All RxGOOSE Online Input.
Page 348: Ethernet
PTP - IRIG-B DELTA being received via PTP and that being received via IRIG-B. A positive value indicates that PTP time is fast compared to IRIG- B time. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 349: Direct Inputs
ACTUAL VALUES  STATUS  COMM STATUS REMAINING CONNECT  COMM STATUS MMS TCP(max 5) Range: 0 to 5   REMAINING CONNECT MODBUS TCP (max 4) Range: 0 to 4  B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 350: Parallel Redundancy Protocol (Prp)
Range: 0 to 4G, blank if PRP disabled  The B90 is provided with optional PRP capability. This feature is specified as a software option at the time of ordering. See the Order Codes section in chapter 2 for details.
Page 351: Metering
 ARP: The B90 is provided with optional IEC 61850 capability. This feature is specified as a software option at the time of ordering. See the Order Codes section of chapter 2 for details. This status is relevant to R-GOOSE reception when configured for SSM or ASM reception modes. It is not relevant for GOOSE or for R-GOOSE in unicast reception mode.
Page 352: Bus Zone
These values display the differential and restraint currents phasors for each bus zone. The magnitudes are displayed in primary amperes. There is no cutoff level applied to the differential and restraint currents computed by the B90. Therefore, a small differential current reflecting CT inaccuracies and bus leakage current can be present during balanced conditions.
Page 353: Voltages
 0.000 The B90 is provided with optional GOOSE communications capability. This feature is specified as a software option at the time of ordering. See the Order Codes section of chapter 2 for details. The RxGOOSE Analog values display in this menu. The RxGOOSE Analog values are received via IEC 61850 GOOSE messages sent from other devices.
Page 354: Event Records
The event records are also viewable in the software and in a web browser. The figure shows the event records in the software. To view them in a web browser, enter the IP address of the device. Figure 6-3: Event records viewed in EnerVista software 6-12 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 355: Oscillography
1970/01/01 23:11:19 The order code, serial number, Ethernet MAC address, date and time of manufacture, and operating time are shown here. The rear panel on the device contains similar information. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 6-13...
Page 356: Firmware Revisions
2016/09/15 16:41:32 Date and time when the FPGA was built. The shown data is illustrative only. A modification file number of 0 indicates that, currently, no modifications have been installed. 6-14 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 357: Commands And Targets
The commands menu contains relay directives intended for operations personnel. All commands can be protected from unauthorized access via the command password; see the Security section of chapter 5 for details. The following flash message appears after successfully command entry. COMMAND EXECUTED B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 358: Virtual Inputs
When the relay is synchronizing to an external time source such as PTP, IRIG-B, or SNTP, the manually entered time is over- written. The timescale of the entered time is local time, including daylight savings time where and when applicable. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 359: Relay Maintenance
Although the diagnostic information is cleared before the B90 is shipped from the factory, the user can want to clear the diagnostic information for themselves under certain circumstances. For example, you clear diagnostic information after replacement of hardware.
Page 360: Targets Menu
A target enables the EnerVista UR Setup software to monitor automatically and display the status of any active target messages of all the devices inserted into that site. Each B90 element with a TARGET setting has a target message that when activated by its element is displayed in sequence with any other currently active target messages in the menu.
Page 361: Relay Self-Tests
Contact Factory (xxx) • Latched target message: Yes. • Description of problem: One or more installed hardware modules is not compatible with the B90 order code. • How often the test is performed: Module dependent. • What to do: Contact the factory and supply the failure code noted in the display. The “xxx” text identifies the failed module (for example, F8L).
Page 362 Description of problem: The battery is weak or not functioning. It powers the real time clock. This message displays as Battery Fail in the event records. When the battery weakness reaches a critical level, the message displays persistently on the front panel and no front panel key navigation is possible. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 363 • Latched target message: No. • Description of problem: A discrepancy has been detected between the actual and desired state of a latching contact output of an installed type “4L” module. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 364 Description of problem: The ambient temperature is greater than the maximum operating temperature (+80°C). • How often the test is performed: Every hour. • What to do: Remove the B90 from service and install in a location that meets operating temperature standards. UNEXPECTED RESTART: Press “RESET” key •...
Page 365 • Description of problem: A firmware upgrade operation was attempted while the lock relay setting was enabled. • What to do: Ask the Supervisor to unlock the relay and try again. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 366 MATCH HW&ORDER CODE • Description of problem: The "B90 Function" setting is set to "Protection" and there is a discrepancy between the order code and the hardware (HW) configuration. For example, if the software option in the B90 order code assumes 24 feeder configuration, but there are only two DSP modules with a total of 16 CT inputs, there is a discrepancy between the hardware and order code and if the "B90 Function"...
Page 367: Application Of Settings
It is also assumed that the CTs have been selected without considering a B90 application, but the UR settings are to be calculated for proper relay application. The CT data used in this example are kept to a minimum and in a generic form. The CT data does not reflect any particular notation or national standards.
Page 368 Table 8-2: Basic CT data Ratio (Ω) Leads (m) CTsec CT-1 600:5 0.34 CT-2 600:5 0.34 CT-3 1200:5 0.64 CT-4 1000:5 0.54 CT-5, CT-6 1000:5 0.54 CT-7, CT-8 1200:5 0.64 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 369: Zoning And Dynamic Bus Replica
CT-3 (if S-3 closed), CT-4 (if S-5 closed), CT-5 and CT-8. The North bus protection is to operate the following breakers: B-1, B-2 (if S-1 closed), B-3 (if S-3 closed), B-4 (if S-5 closed), B-5 and B-7. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 370: South Bus Zone
CT-6 and CT-7. The South bus protection is to operate the following breakers: B-2 (if S-2 closed), B-3 (if S-4 closed), B-4 (if S- 6 closed), B-6 and B-7. Figure 8-4: South bus zone B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 371: Biased Characteristic Breakpoints
Assuming 0.003 Ω/m lead resistance and approximating the B90 input resistance for the 5A input CTs as 0.2 VA / (5 A) 0.008 Ω, the limits of the linear operation of the CTs have been calculated and presented in the Limits of Linear Operations of the CTs table.
Page 372: Low Breakpoint
CTs. For this purpose we assume the tie breaker, B-7 closed; all the circuitry capable of supplying the fault current to be in service; moreover, they are connected to the South bus in order to analyze the CT-7 and CT-8 carrying the fault current. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 373: External Faults On C-1
S_LIM Eq. 8-7 where is the maximum CT primary fault current The figure illustrates the K CT saturation capability curve and K limiting factor. S_LIM B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 374 Method 1 — Download the "CT Time-to-Saturate Estimator.xlsm" spreadsheet from the GE Multilin web site, located under Support > Support Documents > B90 Low Impedance Bus Differential System. Enter the required system and CT parameters to obtain the CT time-to-saturate.
Page 375: External Faults On C-2
Table 8-6: Calculations for the external faults on C-3 (kA) (A sec) (ms) AC saturation DC saturation (ms) FAULT FAULT CT-1 0.00 CT-2 0.00 CT-3 33.33 23.68 CT-4 25.00 26.37 CT-6 15.00 61.50 CT-7, CT-8 33.33 23.68 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 376: Bus Differential Settings
11.0 55.00 9.45 CT-7, CT-8 11.0 45.83 11.54 8.5 Bus differential settings 8.5.1 Description Taking the previous analysis from this chapter into account, the settings have been calculated as follows. 8-10 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 377: Enhancing Relay Performance
HIGH BPNT 8.96 None of the CTs saturate for AC currents below 8.96 pu. The DC component, however, can saturate some CTs even for currents below 8.96 pu. The B90 copes with saturation using the current directional principle. HIGH SET 5.94...
Page 378 CTs in any particular bus configuration. 8-12 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 379: Theory Of Operation
9.1.1 Bus differential protection The figure shows that input currents defining (through the dynamic bus replica) the bus differential zone are received by the B90 from current transformers (CTs) associated with the power system. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 380 The output logic (Block 11) combines the differential, directional, and saturation flags into the biased differential operation flag. The applied logic enhances performance of the relay while keeping an excellent balance between dependability/ speed and security. See the Output Logic and Examples section. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 381: Dynamic Bus Replica
9.2.1 Dynamic bus replica mechanism The bus differential zones of the B90 allow for protecting bus sections that include circuits that are switchable between different sections. Proper relay operation is achieved by associating a status signal with each input current. This mechanism is referred to as a dynamic bus replica.
Page 382: Differential And Restraining Currents
Figure 9-2: Biased operating characteristic The higher slope used by the B90 acts as an actual percentage bias regardless of the value of the restraining signal. This is so because the boundary of the operating characteristic in the higher slope region is a straight line intersecting the origin of the ‘differential - restraining’...
Page 383: Enhanced Security
LOW BPNT 9.3.3 Enhanced security To enhance the performance of the B90, the differential characteristic is divided into two regions having diverse operating modes, as shown in following figure. The first region applies to comparatively low differential currents and has been introduced to deal with CT saturation on low-current external faults.
Page 384: Directional Principle
9.4 Directional principle 9.4.1 Current directional protection For better security, the B90 uses the current directional protection principle to dynamically supervise the main current differential function. The directional principle is in effect permanently for low differential currents (region 1 in the Two Regions of Differential Characteristic figure) and is switched on dynamically for large differential currents (Region 2 in the same figure) by the saturation detector (see the Saturation Detector section) upon detecting CT saturation.
Page 385: Saturation Detector
9.5.1 CT saturation detection The saturation detector of the B90 takes advantage of the fact that any CT operates correctly for a short period of time, even under very large primary currents that would subsequently cause a very deep saturation. As a result, in the case of an external fault, the differential current stays very low during the initial period of linear operation of the CTs while the restraining signal develops rapidly.
Page 386 The operation of the saturation detector is available as the FlexLogic operand BUS 1(4) SAT. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 387: Output Logic And Examples
For high differential signals, the directional principle is included only if demanded by the saturation detector (dynamic 1- out-of-2 / 2-out-of-2 mode). Typically, the directional principle is slower, and by avoiding using it when possible, the B90 gains speed.
Page 388: Internal And External Fault Example
The first of the following figures presents the bus currents and the most important logic signals for the case of an external fault. Despite very fast and severe CT saturation, the B90 remains stable. The second figure presents the same signals but for the case of an internal fault. The B90 trips in 10 ms (fast form-C output contact).
Page 389 CHAPTER 9: THEORY OF OPERATION OUTPUT LOGIC AND EXAMPLES Figure 9-9: External fault example B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 9-11...
Page 390 OUTPUT LOGIC AND EXAMPLES CHAPTER 9: THEORY OF OPERATION Figure 9-10: Internal fault example 9-12 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 391: Maintenance
UR Family Communications Guide for the entries. The upper part of the window displays values. The lower part of the window is for factory service use. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 10-1...
Page 392 Float — A numbering system with no fixed number of digits before or after the decimal point. An example is 0.000000. Binary — A numbering system using 0 and 1. An example is 0000-0000-0000-0000. Entries are not saved when closing the window. 10-2 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 393: General Maintenance
GENERAL MAINTENANCE 10.2 General maintenance The B90 requires minimal maintenance. As a microprocessor-based relay, its characteristics do not change over time. Expected service life is 20 years for UR devices manufactured June 2014 or later when applied in a controlled indoors environment and electrical conditions within specification.
Page 394: Cybersentry Security Event Files
15 = Role Log in 10.3.1.2 Setting changes file The SETTING_CHANGES.LOG file stores all the setting changes. A total of 1024 events are stored in a circular buffer in non- volatile memory. 10-4 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 395: Compare Settings
Comparison Report: Sequential File 1, File 2 Layout — When disabled (default), the report shows only what differs, as shown in the previous figure. When enabled, the report indicates differences by device. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 10-5...
Page 396: Back Up And Restore Settings
LED operands are not modeled. If the block setting of the Phase IOC is configured with LED operands, its displays as TBD in IID and CID files, the web interface, or in an MMS client. 10-6 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 397 Hqve this option enabled when you want to keep the IID file from the UR device instead of from another tool. The location of the file is C:\ProgramData\GE Power Management\urpc\Offline, for example.
Page 398: Restore Settings
IID type backup was created either using the EnerVista UR Setup software in online mode or by using any of the supported file transfer protocols. Note that TFTP cannot be used here, as TFTP "put" mode is disabled for security reasons. 10-8 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 399 To restore settings from an IID file using EnerVista software: In Windows, make a copy the IID file with a cid extension. Connect to the device in the Online Window area. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 10-9...
Page 400: Upgrade Software
UR 7.4 can be used to access multiple UR devices that have version 7.4x, 7.2x, and 6.0x firmware installed. Existing installations do not need to be uninstalled before upgrade. You can also downgrade the software; use the same procedure. 10-10 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 401: Upgrade Firmware
If upgrading both EnerVista software and B90 firmware, upgrade the software first. The firmware of the B90 device can be upgraded, locally or remotely, using the EnerVista software. Upgrades are possible for the same release (such as 7.01 to 7.02) and from one firmware version to another (such as 7.2 to 7.3).
Page 402: Replace Module
To avoid damage to the equipment, use proper electrostatic discharge protection (for example, a static strap) when coming in contact with modules while the relay is energized. 10-12 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 403 Open the enhanced faceplate to the left once the thumb screw has been removed. This allows for easy access of the modules for withdrawal. The new wide-angle hinge assembly in the enhanced front panel opens completely and allows easy access to all modules in the B90. Figure 10-10: Modules inside relay with front cover open (enhanced faceplate) The standard faceplate can be opened to the left once the black plastic sliding latch on the right side has been pushed up, as shown below.
Page 404: Battery
Replace the battery with the identical make and model. For example, do not use a rechargeable battery. Observe the + and - polarity of the battery and replace it with the same polarity as marked on the battery holder. 10-14 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 405: Dispose Of Battery
Batteriet er forsynet med indgraveret symboler for hvad batteriet indeholder: kadmium (Cd), bly (Pb) og kviksølv (Hg). Europæiske brugere af elektrisk udstyr skal aflevere kasserede produkter til genbrug eller til leverandøren. Yderligere oplysninger findes på webstedet www.recyclethis.info. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 10-15...
Page 406 (Cd), ólom (Pb) vagy higany (Hg) tartalomra utaló betűjelzés. A hulladék akkumulátor leadható a termék forgalmazójánál új akkumulátor vásárlásakor, vagy a kijelölt elektronikai hulladékudvarokban. További információ a www.recyclethis.info oldalon. 10-16 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 407 (Cd), chumbo (Pb), ou o mercúrio (hg). Para uma reciclagem apropriada envie a bateria para o seu fornecedor ou para um ponto de recolha designado. Para mais informação veja: www.recyclethis.info. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 10-17...
Page 408: Clear Files And Data After Uninstall
.urs files. For the existing installation, upgrading the firmware overwrites the flash memory. Other files can be in standard formats, such as COMTRADE or .csv. 10-18 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 409: Repairs
Customers are responsible for shipping costs to the factory, regardless of whether the unit is under warranty. • Fax a copy of the shipping information to the GE Grid Solutions service department in Canada at +1 905 927 5098. Use the detailed return procedure outlined at https://www.gegridsolutions.com/multilin/support/ret_proc.htm...
Page 410: Disposal
European Union, dispose of the battery as outlined earlier. To prevent non-intended use of the unit, remove the modules, dismantle the unit, and recycle the metal when possible. 10-20 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 411: A Flexanalog A.1 Flexanalog Items
8692 Bus 3 Max CT Amps B90 bus max CT 8698 Bus 4 Diff Mag Amps B90 bus zone DMag 8702 Bus 4 Diff Angle Degrees B90 bus zone diff angle B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 412 Terminal 13 current angle 28455 L6 Curr Mag Amps Terminal 14 current magnitude 28457 L6 Curr Ang Degrees Terminal 14 current angle 28458 L7 Curr Mag Amps Terminal 15 current magnitude B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 413 Terminal 12 voltage angle 28624 System Frequency Terminal frequency 32768 Tracking Frequency Terminal tracking frequency 45584 RxGOOSE Analog 1 RxGOOSE analog input 1 45586 RxGOOSE Analog 2 RxGOOSE analog input 2 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 414 RxGOOSE analog input 31 45646 RxGOOSE Analog 32 RxGOOSE analog input 32 63634 Bus 1 M_Id B90 Bus M_Id 63636 Bus 1 M_Ir B90 Bus M_Ir 63638 Bus 1 d_Ir B90 Bus d_Ir B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 415: B Radius Server Configuration
UR device for successful authentication, and the shortname is a short, optional alias that can be used in place of the IP address. client 10.0.0.2/24 { secret = testing123 shortname = private-network-1 In the <Path_to_Radius>\etc\raddb folder, create a file called dictionary.ge and add the following content. # ########################################################## GE VSAs ############################################################ VENDOR...
Page 416 8.2. Access Settings > Product Setup > Security. Configure the IP address and ports for the RADIUS server. Leave the GE vendor ID field at the default of 2910. Update the RADIUS shared secret as specified in the clients.conf file.
Page 417: C Command Line Interface
This setting cannot be changed using the command line interface. • Use quotes ("") to enclose any parameter containing a space • Commands, options, and parameters are case sensitive B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 418 "traditional" if not specified. Set <account> to "COMMANDS" or "SETTINGS". If not specified, the SETTINGS account is used. Example: SetupCLI URPC login -d "C30 Melbourne" -A traditional -a SETTINGS -w 1password1 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 419 Write the settings file <File> to the device <device>. For CyberSentry devices, putsettings is only supported for users with the "Administrator" role. Example: SetupCLI URPC putsettings -d C30 -f "C30 Markham.urs" B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 420 SetupCLI URPC getsettings -d demoDevice -f devicefile.urs SetupCLI URPC compare -f existingfile.urs -r devicefile.urs -o output.txt The output is similar to the following: Comparing settings file aaa.urs : C:\Users\Public\Documents\GE Power Management\URPC\Data\ with bbb.urs : C:\Users\Public\Documents\GE Power Management\URPC\Data\ Setting Name (Group,Module,Item) Value...
Page 421 SetupCLI URPC getsettings -d DEV@SETUP_CLI -f "example file.urs" SetupCLI URPC logout -d DEV@SETUP_CLI SetupCLI URPC exit DEV@SETUP_CLI has to be used as the device name in the commands followed by the 'adddevice' command. B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 422 COMMAND LINE INTERFACE APPENDIX C: COMMAND LINE INTERFACE B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 423: Revision History
D.1 Warranty For products shipped as of 1 October 2013, GE Grid Solutions warrants most of its GE manufactured products for 10 years. For warranty details including any limitations and disclaimers, see the GE Grid Solutions Terms and Conditions at https://www.gegridsolutions.com/multilin/warranty.htm...
Page 424 8 December 2016 16-3319 1601-0115-AE1 7.41x 31 January 2017 17-3427 Table D-2: Major changes for B90 manual version AE1 (English) Page Description General revision Added routable GOOSE content in chapters 2 and 5 3-34 Updated RS422 and Fiber Interface Connection figure for the clock channels (from 7a and 7b to 1a and 1b)
Page 425 2-13 Added UR Signal Processing section Updated IEC 61850 content Updated FlexAnalog table Table D-5: Major changes for B90 manual version AB1 (English) Page Description Updated document throughout and put into new template. Major revision. Updated references to digital inputs/outputs to contact inputs/outputs for consistency Updated bus differential zones from four to six throughout document, for example specifications, interface, settings, actual values.
Page 426 REVISION HISTORY APPENDIX D: MISCELLANEOUS B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 427 FREQ Frequency Communication Frequency-Shift Keying COMM Communications File Transfer Protocol COMP Compensated, Comparison FlexElement™ CONN Connection Forward CONT Continuous, Contact CO-ORD Coordination Generator Central Processing Unit GDOI Group Domain of Interpretation B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 428 Manual / Manually Pulse Width Modulated Maximum Power Model Implementation Conformance Minimum, Minutes QUAD Quadrilateral Man Machine Interface Manufacturing Message Specification Rate, Reverse Minimum Response Time Registration Authority Message Reach Characteristic Angle B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 429 Time Undercurrent Time Undervoltage TX (Tx) Transmit, Transmitter Under Undercurrent Utility Communications Architecture User Datagram Protocol Underwriters Laboratories UNBAL Unbalance Universal Relay Universal Recloser Control .URS Filename extension for settings files Undervoltage B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 430 ABBREVIATIONS B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 431 Caution symbol in Offline Window ..........4-38 Authentication fail message ............7-9 CE certification ..................2-27 Automatic discovery of UR devices ...........3-54 Certification .................... 2-27 AWG wire size ............3-28, 3-32, 3-34, 3-35 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 432 ..................5-22 Compliance .................... 2-27 COMTRADE files, view ............... 4-49 Conducted RFI specifications ............2-26 Connection timeout ................5-35 Data, reading values ................6-1 Dataset member is empty message ........5-51 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 433 ..................5-24, 7-2 DOS partition alarm error message ..........7-10 records explained ................4-2 Downgrade firmware ..............10-11 specifications ..................2-19 Downgrade software system logs ..................5-22 ..............10-10 via EnerVista software ..............4-2 Download files ..................10-3 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 434 ....................4-9 Group 1 switch after powerup ..........5-138 specifications ..................2-17 Grouped elements ................5-137 timer settings ...................5-136 Guarantee ....................D-1 worksheet ..................5-133 Force contact inputs ...............5-185 Force contact outputs ..............5-185 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 435 ..................7-7 direct input specifications ............2-20 settings ....................5-177 IRIG-B ......................3-23 specifications ..................2-21 IRIG-B specifications ...............2-20 LED test virtual ....................5-175 commands .....................7-3 FlexLogic operand .................5-128 settings ....................5-93 specifications ..................2-18 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 436 ..............6-7 Flex State parameters ..............5-104 port, close .................... 5-34 register entry ..................5-86 settings ....................5-34 user map ....................5-86 Modbus Analyzer ................10-1 Model information, view ..............6-13 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 437 ....................5-87 Ethernet, turn on or off ..............5-28 specifications ..................2-24 HTTP, close ...................5-78 pu quantity ....................5-3 IEC 60870-5-104, close ..............5-80 Modbus, close ..................5-34 SNTP, close ...................5-89 TFTP, close ....................5-79 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 438 Self-tests Restore settings ................... 10-6 description ....................7-5 Revision history ..................D-1 error messages ..................7-5 RF immunity specifications ............2-26 FlexLogic operands ..............5-129 RFI, conducted specifications ............2-26 user-programmable ............... 5-96 viii B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 439 ....................5-158 interface explained ................4-1 specifications ..................2-16 system requirements ..............3-43 Torque for screws ................2-27 update or downgrade ..............10-10 Specifications ..................2-16 Standards, certification ..............2-27 Status LEDs .....................4-21 Storage ....................10-19 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 440 URS file does not include IEC 61850 configuration ..10-9 Windows requirement ..............3-43 URS file is part of a device folder ..........10-9 URS settings file ............3-58, 5-42, 10-6 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 441 RS422 and fiber interface .............3-34 RS422 interface .................3-32 Wiring diagrams ..................3-5 Withdrawal from operation ......... 10-18, 10-19 Wrong transceiver message ............7-9 XOR gate explained ................4-52 Yellow caution icon in Offline Window ........4-38 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...
Page 442 INDEX B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL...

GE B90 Instruction Manual

1 Introduction

Safety Symbols and Definitions

2 Product Description

3 Installation

Unpack and Inspect

4 Interfaces

Enervista Software Interface

5 Settings

Settings Menu

6 Actual Values

Actual Values Menu

7 Commands and Targets

8 Application of Settings

9 Theory of Operation

10 Maintenance

A FLEXANALOG A.1 Flexanalog Items

B Radius Server Configuration

C Command Line Interface

D.1 Warranty

Revision History

Quick Links

Related Manuals for GE B90

Summary of Contents for GE B90