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ABB REJ 527 Technical Reference Manual

Directional or non-directional earth-fault relay
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REJ 527
Directional or Non-Directional
Earth-Fault Relay
Technical Reference Manual

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Summary of Contents for ABB REJ 527

  • Page 1 REJ 527 Directional or Non-Directional Earth-Fault Relay Technical Reference Manual...

  • Page 3: Table Of Contents

    1MRS 750616-MUM Directional or Non-Directional REJ 527 Earth-Fault Relay Issued: 07.07.99 Version: B/05.07.2002 Checked: A.S. Technical Reference Manual Approved: L.N. We reserve the right to change data without prior notice. Contents 1. Introduction ................5 1.1. About this manual .................5 1.2. The use of the relay ..............5 1.3.
  • Page 4 REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual 4.1.7.1. Function ............. 39 4.1.7.2. Disturbance recorder data ......... 39 4.1.7.3. Control and indication of disturbance recorder status ..............40 4.1.7.4. Triggering ............41 4.1.7.5. Settings and unloading ........41 4.1.7.6.

  • Page 5: Introduction

    About this manual The purpose of this manual is to provide the user with thorough information on the protection relay REJ 527 and its applications, focusing on giving a technical description of the relay. Refer to the Operator’s Manual for instructions on how to use the Human-Machine Interface (HMI) of the relay, also known as the Man-Machine Interface (MMI), and to the Installation Manual for installation of the relay.

  • Page 6: Guarantee

    • User-selectable rated frequency 50/60 Hz • User-selectable password protection for the HMI • Display of primary current and voltage values as well as phase angle values • Multi-language support 1.4. Guarantee Please inquire the guarantee of your nearest ABB representative.

  • Page 7: Safety Information

    Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual Safety information Dangerous voltages can occur on the connectors, even though the auxiliary voltage has been disconnected National and local electrical safety regulations must always be followed The device contains components which are sensitive to electrostatic...

  • Page 8: Instructions

    3.2. Requirements When the REJ 527 is operating under the conditions specified below (see also “Technical data”), it will be practically maintenance-free. The relay includes no parts or components subject to abnormal physical or electrical wear under normal operating conditions.
  • Page 9 Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual OUTP. CONT. UNLATCHED AND INDIC. CLEARED MEMORIZED VALUES AND INDIC. CLEARED; OUTPUT CONTACTS UNLATCHED SWITCHGROUP SELECTION )LJ  &RQQHFWLRQ GLDJUDP RI WKH GLUHFWLRQDO HDUWKIDXOW UHOD\...

  • Page 10: Technical Description

    REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual Technical description 4.1. Functional description 4.1.1. Product functions 4.1.1.1. Schema of product functions Earth-fault protection with definite- or inverse-time characteristic, low-set stage Earth-fault protection with instantaneous or definite-time characteristic, high-set...

  • Page 11: Inputs

    4.1.1.4. Outputs The REJ 527 is provided with two power outputs (PO1 and PO2) and two signal outputs (SO1 and SO2). Switchgroups SGR1...6 are used for routing start and trip signals from the protection stages to the desired signal or power output. PO1 and PO2 can be configured to be latched and the minimum pulse length to 40 or 80 ms.

  • Page 12: Self-Supervision

    4.1.1.9. Self-supervision The self-supervision system of the REJ 527 manages run-time fault situations and informs the user about an existing fault. When the self-supervision system detects a permanent internal relay fault, the READY indicator LED will start to blink. At the same time the self-supervision alarm relay (also referred to as the IRF relay), which is normally picked up, will drop off and a fault code will appear on the LCD.

  • Page 13: Configuration

    Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual 4.1.3. Configuration The figure below illustrates how the start, trip and binary input signals can be configured to obtain the required protection functionality. )LJ  6LJQDO GLDJUDP RI WKH GLUHFWLRQDO HDUWKIDXOW UHOD\ The functions of the blocking and start signals are selected with the switches of switchgroups SGF, SGB and SGR.

  • Page 14: Directional Or Non-Directional Earth-Fault

    REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual 4.1.4.2. Directional or non-directional earth-fault current unit The high-set and the low-set stage of the directional earth-fault current unit can be configured to be either directional or non-directional. The directional earth-fault stages can be given either a basic angle or a sin(ϕ) or a cos(ϕ)
  • Page 15 Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual ϕb=0° ϕa=40° ∆ϕ=80° OPERATION OPERATION AREA AREA Negative Positive quadrant quadrant Io> -140° -120° -100° -80° -60° -40° -20° 0° 20° 40° 60° 80° 100° NON-OPERATION AREA )LJ  2SHUDWLRQ FKDUDFWHULVWLF RI WKH GLUHFWLRQDO HDUWKIDXOW SURWHFWLRQ XQLW ZKHQ EDVLF DQJOH ϕ...
  • Page 16 REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual LEAD ϕ Io> ∆ϕ OPERATION SECTOR ϕ b=-90° ∆ϕ =80° )LJ  2SHUDWLRQ FKDUDFWHULVWLF ZKHQ EDVLF DQJOH ϕ ° The start and the tripping of the directional earth-fault stages with the sin(ϕ) or the cos(ϕ) characteristic are based on measuring the earth-fault current, I...
  • Page 17 Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual ϕc=2..7° ϕ Io>(>) ϕc=2..7° )LJ  2SHUDWLRQ FKDUDFWHULVWLF VLQ ϕ ϕ ϕc=2..7° ϕc=2..7° Io>(>) )LJ  2SHUDWLRQ FKDUDFWHULVWLF FRV ϕ The operation directions, forward or reverse, of the directional earth-fault stages can be selected independently of each other.

  • Page 18: Zero-Sequence Voltage Unit

    REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual When the earth-fault current exceeds the set start value of high-set stage I >>, the earth-fault unit will start to deliver a start signal after a ~ 60 ms’ start time. When the set operate time elapses, the earth-fault unit will deliver a trip signal.

  • Page 19: Protection Against Intermittent Earth-Faults

    Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual 4.1.4.4. Protection against intermittent earth-faults An intermittent earth-fault typically occurs in an insulated cable where the insulation has a crack and water leaks into the cable. The earth-fault dries up the crack in the cable, extinguishing the fault, but reappears after a short time as water leaks back through the crack.

  • Page 20: Time/Current Characteristics

    The two additional inverse-time curve groups, referred to as RI and RD, are special curve groups according to ABB praxis. Characteristics according to the IEC 60255 standard The relay module incorporates four internationally standardized time/current curve groups called extremely inverse, very inverse, normal inverse and long-time inverse.
  • Page 21 Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual According to the standard, the normal current range is 2...20 times the setting value at normal inverse, very inverse or extremely inverse characteristic. The relay is to start before the current exceeds the setting value by 1.3 times. At long-time inverse characteristic, the normal current range is specified to be 2...7 times the setting...
  • Page 22 REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual RD-type characteristic The RD-type characteristic is a special characteristic which is principally used in earth-fault protection and which requires a high degree of selectivity even at high resistance faults. The protection can operate in a selective way even if it is not directional.
  • Page 23 Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual 0 .9 0 .8 0 .7 0 .6 0 .5 0 .4 0 .3 0 .2 0.05 0 .09 0 .08 0.07 0 .06 0 .05 0 .04 0 .03...
  • Page 24 REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual t /s 0 . 9 0 . 8 0 . 7 0 .9 0 . 6 0 .8 0 . 5 0 .7 0 .6 0 . 4 0 .5...
  • Page 25 Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual t / s 0 . 9 0 . 8 0 . 7 0 . 6 0 . 5 0 . 4 0 . 3 1 . 0 0 . 2 0 .
  • Page 26 REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual t/ s 70 0 60 0 40 0 30 0 20 0 10 0 0. 9 0. 8 0. 7 0. 6 0. 5 0. 4 0.05 0. 3 0.
  • Page 27 Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual 1. 0 0. 9 0. 8 0 . 7 0. 6 0. 5 0 . 4 0 . 3 0 . 2 0. 1 0. 05 0.09 0.08 0.07...
  • Page 28 REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual t/ s 0. 9 1 .0 0. 8 0 . 7 0. 6 0 . 5 0 . 4 0. 7 0 . 3 0 . 2 0 . 1 0 .

  • Page 29: Settings

    Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual 4.1.4.6. Settings There are two alternative setting groups available, setting groups 1 and 2. Either of these setting groups can be used as the actual settings, one at a time. Both groups have their related registers.
  • Page 30 Iϕ characteristic CBFP Circuit-breaker failure protection 0.10...1.00 s 0.10 s At IDMT characteristic, the REJ 527 allows settings above 40% x I for stage I , but regards any setting >40% x I as equal to 40% x I The stage can be set out of operation in SGF.
  • Page 31 Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual SGF1...SGF5 Switchgroups SGF1...SGF5 are used for configuring the desired function as follows. Table 4.1.4.6-2 SGF1 Default Switch Function setting SGF1/1 Selection of the latching feature for power output PO1...
  • Page 32 REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual Table 4.1.4.6-3 SGF2 Default Switch Function setting SGF2/1 Automatic doubling of the set start value of stage I>> • When the switch is in position 1, the set start value of the stage will automatically be doubled at high inrush situations.
  • Page 33 Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual Table 4.1.4.6-4 SGF3 Default Switch Function setting SGF3/1 Selection of directional or non-directional operation for stage I > • 0 = directional • 1 = non-directional SGF3/2 Selection of operation for stage I >...
  • Page 34 REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual Table 4.1.4.6-6 SGF5: Resetting time of stage I >/U > SGF5/1 SGF5/2 SGF5/3 SGF5/4 SGF5/5 SGF5/6 SGF5/7 SGF5/8 Operation 80 ms 100 ms 500 ms 1000 ms Default setting ≥...
  • Page 35 Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual SGB1 Table 4.1.4.6-7 SGB1 Resetting/blocking with BI Default Switch Function setting SGB1/1 • 0 = indications are not cleared by the binary input signal • 1 = indications are cleared by the binary input signal SGB1/2 •...
  • Page 36 REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual Not in use Not in use Not in use Not in use Checksum (factory setting) SGR1 ∑ SGR1= Uob> (12) SGR2 ∑ SGR2= tb> SGR3 Io>/ ∑ SGR3= Uo>...

  • Page 37: Technical Data On Protection Functions

    Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual Table 4.1.4.6-10 Memory settings Default Switch Function setting • 0 = alarm indication messages and LEDs will be cleared • 1 = alarm indication messages and LEDs will be retained •...

  • Page 38: Indicator Leds And Alarm Indication Messages

    4.1.5. Indicator LEDs and alarm indication messages The operation of the REJ 527 can be monitored by means of three indicators on the front panel of the relay: a green READY indicator LED, a yellow START indicator LED and a red TRIP indicator LED (refer to the Operator’s Manual for a more...

  • Page 39: Commissioning Test

    4.1.7.1. Function The REJ 527 features an integrated disturbance recorder for recording monitored quantities. The recorder continuously captures the curve forms of the current and voltage as well as the status of both the internal signals and the external binary input signal and stores these in the memory.

  • Page 40: Control And Indication Of Disturbance Recorder Status

    REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual The recording length varies according to the selected sampling frequency. The RMS curve is recorded by selecting the sampling frequency to be the same as the nominal frequency of the relay. The sampling frequency is selected with parameter M15; see the table below for details.

  • Page 41: Triggering

    4.1.8. Recorded data of the last events The REJ 527 records up to five events. This enables the user to analyze the last five fault situations in the electrical power network. Each event includes the measured zero-sequence voltage, non-directional earth-fault current, directional earth-fault current and phase angle, start durations, and the time stamp.

  • Page 42: External Serial Communication

    1MRS 750616-MUM Technical Reference Manual The REJ 527 will start to collect data from all the stages when a protection function starts. When each stage has dropped off, the collected data and the time stamp will be stored in the first event register and the four previously stored events will move one step forward.

  • Page 43: Iec 60870-5-103 Remote Communication Protocol

    The IEC_103 protocol can be used only through the RS-485 connection on the rear panel. Connecting the REJ 527 to the fibre-optic communication bus requires the use of the fibre-optic interface module RER 103. The line-idle state of the RER 103 is “light off”...
  • Page 44 )LJ  5(-  FRPPXQLFDWLRQ XVLQJ WKH ,(&B SURWRFRO The REJ 527 will use the SPA bus protocol as default when the rear connection is in use. The IEC_103 protocol can be selected through the HMI of the relay. The selection is memorized and will therefore always be activated when the rear connection is in use.
  • Page 45 Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual measurand multiplied by the normalize factor is proportional to the rated value. Therefore, the maximum value of each measurand is the normalize factor multiplied by the rated value.
  • Page 46 REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual 7DEOH  ,QIRUPDWLRQ PDSSLQJ RI FRQILJXUDWLRQ VHW  Standard description of Event reason the information number (IEC 80870-5-103) > Trip (trip IN>) Activated/Reset (160) >> Start Activated/Reset >> Trip E11/ (trip IN>>)
  • Page 47 Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual 7DEOH  ,QIRUPDWLRQ PDSSLQJ RI FRQILJXUDWLRQ VHW  Standard description of Event reason the information number (IEC 80870-5-103) > Start Activated/Reset > Trip Activated/Reset > Start Activated/Reset > Trip Activated/Reset >>...

  • Page 48: Event Codes

    REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual 4.1.9.3. Event codes Special codes have been determined to represent certain events, such as start and tripping of protection stages and different states of output signals. Events E1…E51 are stored in the event register of the relay. The maximum capacity of the register is 60 events.

  • Page 49: Spa Bus Communication Protocol Parameters

    Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual Table 4.1.9.3-4 Event codes E13…E20 Code Event Weighting factor Default value PO1 activated PO1 reset PO2 activated PO2 reset SO1 activated SO1 reset SO2 activated SO2 reset Default value of event mask V157 Table 4.1.9.3-5 Event codes E31...E33...
  • Page 50 REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual • S = setting values • V = recorded data/parameter • M = disturbance recorder parameter • O = output data Settings Table 4.1.9.4-1 Settings Actual Group 1...
  • Page 51 Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual Recorded data Parameters V1…V3 show the number of starts of the protection stages and parameter V4 the trip indication code. Table 4.1.9.4-2 Recorded data: Parameters V1…V4 Recorded data...
  • Page 52 REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual Disturbance recorder Table 4.1.9.4-4 Parameters for the disturbance recorder Description Parameter R, W Value/Note Manual triggering Clear recorder memory Sampling rate R, W 800/960 Hz 400/480 Hz 50/60 Hz...
  • Page 53 Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual Table 4.1.9.4-5 Disturbance recorder internal triggering Default value of Default value of Weighting Event triggering mask, triggering edge, factor V241 V242 Start of stage U > Trip of stage U >...
  • Page 54 REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual Table 4.1.9.4-7 Control parameters Description Parameter R, W Value Event mask for the disturbance V158 0...7, see Event codes recorder and the HMI password Entering the SPA password for V160 1...999...
  • Page 55 Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual Input and output signals The measured values and the status of the binary input signal can be read (R) with parameters I1...I5. When the value of parameter I5 is 1, the binary input will be energized.

  • Page 56: Self-Supervision (Irf) System

    4.1.10. Self-supervision (IRF) system The REJ 527 is provided with an extensive self-supervision system which continuously supervises the software and the electronics of the relay. It handles run-time fault situations and informs the user about an existing fault via a LED on the HMI and a text message on the LCD.
  • Page 57 X2.1/13-14 will close. The following picture presents a rear view of the REJ 527, showing three connecting sockets: one for measuring transformers, one for power supply and one for serial...
  • Page 58 REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual 5HDU YLHZ RI WKH GLUHFWLRQDO HDUWKIDXOW UHOD\ Table 4.2.1-1 Inputs for earth-fault current and zero-sequence voltage Terminal Function REJ 527B 411BAA REJ 527B 418BAA X1.1-1 Common Common X1.1-2 X1.1-3...

  • Page 59: Serial Communication Connections

    4.2.2. Serial communication connections The REJ 527 is interfaced with a fibre-optic bus by means of the bus connection module RER 103 via the D9S-type connector X2 located on the rear panel of the device. The terminals of the fibre-optic cables are connected to the counter terminals Rx (Receiver) and Tx (Transmitter) of the bus connection module.

  • Page 60: Technical Data

    REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual 4.2.3. Technical data Table 4.2.3-1 Dimensions Width, frame 111.4 mm, box 94 mm Height, frame 265.9 mm (6U), box 249.8 mm Depth 235 mm (245.1 mm with a protective rear cover, available as an option) Enclosure size 1/4 (x 19”)
  • Page 61 Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual Table 4.2.3-5 Binary input Operating range 18…265 V dc Rated voltage =24/48/60/110/220 V dc Current drain ~ 2…25 mA Power consumption < 0.8 W Table 4.2.3-6 Signal outputs (SO1, SO2) and self-supervision (IRF) output...
  • Page 62 REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual Table 4.2.3-10 Electromagnetic compatibility tests Radio frequency interference tests • Conducted, common mode According to the IEC 61000-4-6 and IEC 60255-22-6 (2000) 10 V (rms), f=150 kHz…80 MHz •...
  • Page 63 • 4.8 or 9.6 kbps Auxiliary voltage The REJ 527 requires a secured auxiliary voltage supply to operate. The internal power supply of the relay forms the voltages required by the relay electronics. The power supply is a galvanically isolated (flyback-type) DC/DC converter. When the auxiliary voltage is connected, the READY indicator LED on the front panel will be on.

  • Page 64: Ordering Information

    REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual Ordering information Order number (I inputs 0.2 A/1 A) REJ527B 411BAA (Article nr:1MRS091411-BAA) Order number (I inputs 1 A/5 A) REJ527B 418BAA (Article nr:1MRS091418-BAA) Protective cover for rear connectors...

  • Page 65: References

    Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual References Other available manuals: • Operator’s Manual, 1MRS751055-MUM • Installation Manual, 1MRS750526-MUM...

  • Page 66: Index

    REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual Index Application ....................8 Auxiliary voltage ................58, 60, 63 Basic angle ..............14, 30, 33, 35, 38, 50 Binary input..................59, 61 Binary input test ..................39 Block diagram ....................
  • Page 67 Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual HMI ...................... 11, 29 IEC 60255 standard ..................20 IEC 60870-5-103 ..................43 Indication messages................38, 56 Input/output connections ................56 Input/output signals ..................55 Inputs .....................11, 55 Intermittent earth-fault ................19, 34 Internal relay fault ................
  • Page 68 REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual Safety information..................7 Self-supervision..................12, 56 Serial communication ................42, 59 Setting groups................. 29, 70, 71 Settings ....................29, 50 SGB1 ......................35 SGF1...SGF5 ....................31 SGR1...SGR6 ..................35, 57 Signal diagram ...................

  • Page 69: Abbreviations

    Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual Abbreviations ϕ Additional angle ϕ Basic angle ϕ Angle correction factor Binary input CBFP Circuit-breaker failure protection Central processing unit Current transformer IDMT Inverse definite minimum time characteristic...

  • Page 70: Check Lists

    REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual Check lists Table 9.-1 Setting group 1 Group 1 Default Customer’s Variable Setting range (R, W, P) setting setting Set start value of stage I > 1.0...100% x I 1.0% x I...
  • Page 71 Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual Table 9.-2 Setting group 2 Group 2 Default Customer’s Variable Setting range (R, W, P) setting setting Set start value of stage I > 1.0...100% x I 1.0% x I Set start value of stage U >...
  • Page 72 REJ 527 Directional or Non-Directional Earth-Fault Relay 1MRS 750616-MUM Technical Reference Manual Table 9.-3 Control parameters Default Customer’s Variable Parameter Setting range setting setting Rated frequency V133 50/60 Nominal voltage V134 100/110/115/120 100 Remote control of settings V150 Non-volatile memory settings V152 0...31...

  • Page 73: Customer Feedback

    Directional or Non-Directional Earth-Fault Relay REJ 527 1MRS 750616-MUM Technical Reference Manual Customer feedback Date: To fax: +358 10 224 1080 Category: Comment Query Complaint In case of feedback related to a specific product, please state the name of the product.
  • Page 76 ABB Oy Substation Automation P.O. Box 699 FIN-65101 VAASA Finland Tel. +358 10 22 11 Fax. +358 10 224 1094 www.abb.com/substationautomation...

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