Toshiba GR 200 Series User manual

6F2S1931 (Rev. 0.20)
Notice: This manual is issued for ‘030’, ‘031’, ‘032’
‘033’, ‘034’software codes, which you can identify
at ’S, G, and T positions’ on Software nameplate.
GRB200---
S, G, and T positions
TOSHIBA ENERGY SYSTEMS&SOLUTIONS CORPORATION
Instruction manual
Centralized Busbar Protection IED
GR200 series (GRB200)

6F2S1931 (0.20)
ii
Safety Precautions
Before using this equipment, please read this chapter carefully.
This chapter describes the safety precautions recommended when using the GR
equipment. Before installing and using the equipment, this chapter must be thoroughly read
and understood.
Explanation of symbols used
Signal words such as DANGER, WARNING, and CAUTION, will be followed by
important safety information that must be carefully reviewed.
Indicates an imminently hazardous situation which will result in
death or serious injury if you do not follow the instructions.
Indicates a potentially hazardous situation which could result in
death or serious injury if you do not follow the instructions.
CAUTION Indicates a potentially hazardous situation which if not avoided,
may result in minor injury or moderate injury or property damage.
•Current transformer circuit
Never allow the current transformer (CT) secondary circuit connected to this equipment to
be opened while the primary system is live. Opening the CT circuit will produce a
dangerously high voltage.
•Exposed terminals
Do not touch the terminals of this equipment while the power is on, as the high voltage
generated is dangerous.
•Residual voltage
Hazardous voltage can be present in the DC circuit just after switching off the DC power
supply. It takes approximately 30 seconds for the voltage to discharge.
•Fiber optic
CLASS 1 LASER PRODUCT.
DANGER
WARNING
DANGER
WARNING

6F2S1931 (0.20)
iii
CAUTION
•Earth
The earthing terminal of the equipment must be securely earthed.
CAUTION
•Operating environment
The equipment must only be used within the range of ambient temperature, humidity and
dust detailed in the specification and in an environment free of abnormal vibration.
•Ratings
Before applying AC voltage and current or the DC power supply to the equipment, check
that they conform to the equipment ratings.
•Printed circuit board
Do not attach and remove printed circuit boards when the DC power to the equipment is
on, as this may cause the equipment to malfunction.
•External circuit
When connecting the output contacts of the equipment to an external circuit, carefully
check the supply voltage used in order to prevent the connected circuit from overheating.
•Connection cable
Carefully handle the connection cable without applying excessive force.
•Modification
Do not modify this equipment, as this may cause the equipment to malfunction.
•Short-wire (Short-bar)
Do not remove the short-wire/short-bar(s) connected to the frame earth (FG) at the terminal
block on the rear of cases.
•Electric wire between #35 - #37 on the power-supply terminal block
Make sure the wire is connected.
(Exception: This wire needs to be detached for performing the dielectric voltage test.)

6F2S1931 (0.20)
iv
•Disposal
This equipment contains neither expendable supplies nor parts that can be recycled. When
disposing of this equipment, the customer must contact an operator responsible for
industrial waste disposal, and request that the operator dispose of this equipment in
accordance with the local waste disposal regulations; otherwise the person who disposes
of this equipment may be punished under local regulations. When disposing of this
equipment is practiced by the customer acting on their own behalf, it must be done so in a
safe manner according to local regulations. For further information in terms of the disposal,
the customer shall contact to a local dealer and sales staff at Toshiba Energy Systems &
Solutions Corporation (Toshiba ESS, Japan).
This equipment contains neither expendable supplies nor recyclables.
•Plastics material
This equipment contains the following plastics material.
- ABS, Polycarbonate, Acrylic resins, Nylon 66, and others.
Equipment installation and operation
•Equipment installation
Never remove cables at frame ground terminals (FGs) while the AC/DC power supplies.
•Equipment operation
The user shall have responsibilities to use and install the equipment where the
specifications are designated by the manufacture. Never operate the equipment on the
condition where the manufacture cannot intend. Otherwise, the safety function furnished
into the equipment may not be operated properly.
•Symbols
Symbol
Description
Protective conductor terminal
Caution, risk of electric shock

6F2S1931 (0.20)
v
Liability, copyright and others
•Disclaimer of liability
We have checked the description of this manual against the hardware and software
described, but we cannot guarantee that all deviations have been eliminated from the
description completely; hence, no liability can be accepted for any errors or omissions
contained in the information given. We review the information in this manual regularly
and there will be some corrections in subsequent editions. We reserve the right to make
technical improvements without notice.
•Copyright
© Toshiba Energy Systems & Solutions Corporation 2021.
All rights reserved.
•Registered Trademarks
Product/Equipment names (mentioned herein) may be trademarks of their respective
companies.

6F2S1931 (0.20)
vi
Contents
1Introduction ............................................................................................................................................ 1
Configuration................................................................................................................................... 2
Protection functions ........................................................................................................................ 7
Recording function .......................................................................................................................... 7
Metering function............................................................................................................................ 7
Summary of GRB200 ...................................................................................................................... 9
Symbols used in logical diagrams................................................................................................ 10
Abbreviation .................................................................................................................................. 14
Function Block (FB), Function ID, Signal number (Data ID).................................................... 16
2Relay application .................................................................................................................................. 18
Current differential protection (DIF)........................................................................................... 19
2.1.1 Check-zone-protection and Discriminating-zone-protection............................................... 19
2.1.2 Selection of protection-characteristic ................................................................................... 24
2.1.3 Stabilization for CT saturation with through-fault current............................................... 25
2.1.4 Current transformer requirements ...................................................................................... 27
2.1.5 DIF slope settings .................................................................................................................. 28
2.1.6 Protection for respective zones (DIFCH, DIFZA to DIFZF)................................................ 30
2.1.7 Blind zone protection............................................................................................................. 36
2.1.8 CT circuit failure detection (Open circuit) ........................................................................... 38
2.1.9 Supervision of differential current (DIF-IdSV) ................................................................... 42
2.1.10 Setting..................................................................................................................................... 44
2.1.11 Signal (DataID) ...................................................................................................................... 45
Circuit breaker failure protection (CBF)..................................................................................... 52
2.2.1 Detecting the failure of circuit breakers .............................................................................. 53
2.2.2 Protection scheme .................................................................................................................. 53
2.2.3 Scheme logic and setting ....................................................................................................... 56
2.2.4 CBF operation by faults occurrence...................................................................................... 65
2.2.5 Setting..................................................................................................................................... 69
2.2.6 Signal (Data ID)..................................................................................................................... 70
Fail safe (FS).................................................................................................................................. 96
2.3.1 Under-voltage element for phase-to-earth voltage (UVFS) ................................................ 97
2.3.2 Under-voltage element for phase-to-phase voltage (UVSFS)............................................. 97
2.3.3 Under-voltage change detection element (UVDFS) ............................................................ 97
2.3.4 Scheme logic ........................................................................................................................... 97
2.3.5 Setting................................................................................................................................... 100
2.3.6 Signal (Data ID)................................................................................................................... 101

6F2S1931 (0.20)
vii
Command trip function (COMTP).............................................................................................. 105
2.4.1 Operation of Command-trip ................................................................................................ 106
2.4.2 Operation of Command-transfer-trip ................................................................................. 106
2.4.3 Scheme logic and setting ..................................................................................................... 107
2.4.4 Operation example of Command-transfer-trip ...................................................................111
2.4.5 Setting................................................................................................................................... 112
2.4.6 Data ID ................................................................................................................................. 113
End fault protection (EFP) ......................................................................................................... 116
2.5.1 Operation of EFP-trip.......................................................................................................... 117
2.5.2 Scheme logic and setting ..................................................................................................... 119
2.5.3 Setting................................................................................................................................... 123
2.5.4 Data ID ................................................................................................................................. 124
Non-directional overcurrent protection (OC) ............................................................................ 131
2.6.1 Characteristic of non-directional OC.................................................................................. 132
2.6.2 Inverse time and definite time delay and characteristic .................................................. 132
2.6.3 Threshold value for each CH............................................................................................... 141
2.6.4 Reset ratio............................................................................................................................. 141
2.6.5 Miscellaneous functions....................................................................................................... 142
2.6.6 Scheme logic and settings ................................................................................................... 143
2.6.7 Setting................................................................................................................................... 146
2.6.8 Signal (Data ID)................................................................................................................... 150
Trip circuit (TRC) ........................................................................................................................ 169
2.7.1 General trip1 (GEN.TRIP1_CH*)....................................................................................... 170
2.7.2 General trip2 (GEN.TRIP2_CH*)....................................................................................... 170
2.7.3 Transfer trip (TR.TRIP_CH*) ............................................................................................. 170
2.7.4 Scheme logic ......................................................................................................................... 170
2.7.5 Setting................................................................................................................................... 173
2.7.6 Signal (Data ID)................................................................................................................... 174
Miscellaneous .............................................................................................................................. 180
2.8.1 Contact supervision (Contact SV)....................................................................................... 180
2.8.2 Blocking coupler (CoupTpBlk) ............................................................................................ 187
Exclusing zone evaluation (Exclusion_CH)............................................................................... 188
3General control function .................................................................................................................... 189
Control scheme ............................................................................................................................ 190
Control mode................................................................................................................................ 193
3.2.1 Select-before-operation mode (SBO)................................................................................... 193
3.2.2 Direct-operation mode (DIR)............................................................................................... 194
Control hierarchy ........................................................................................................................ 196
3.3.1 Control level and control point............................................................................................ 197

6F2S1931 (0.20)
viii
3.3.2 Selector switches and bay operations................................................................................. 197
3.3.3 Programming of control-right distributions....................................................................... 197
Common controls (CMNCTRL) .................................................................................................. 199
3.4.1 Double command blocking (DCB) ....................................................................................... 199
3.4.2 Provision of selected status ................................................................................................. 200
3.4.3 Miscellaneous settings......................................................................................................... 200
Local, remote and PLC control................................................................................................... 202
3.5.1 Local control ......................................................................................................................... 203
3.5.2 Remote control...................................................................................................................... 203
3.5.3 Programmable logic control (PLC)...................................................................................... 203
3.5.4 Connection and mapping for local/remote control............................................................. 203
3.5.5 Signal (DataID).................................................................................................................... 204
LED reset function (LEDR)........................................................................................................ 205
3.6.1 Select logic for resetting LEDs............................................................................................ 206
3.6.2 Cancel logic in SBO mode.................................................................................................... 208
3.6.3 Operate logic for SBO/DIR mode ........................................................................................ 209
3.6.4 Settings in LED logics ......................................................................................................... 210
3.6.5 Mapping for IEC61850 communication.............................................................................. 212
3.6.6 Setting................................................................................................................................... 216
3.6.7 Signal (DataID).................................................................................................................... 216
Counter function for the general (GCNT) ................................................................................. 217
3.7.1 Counter setting for a signal................................................................................................. 218
3.7.2 Select logics for SBO/DIR modes ........................................................................................ 220
3.7.3 Cancel logic for SBO mode .................................................................................................. 225
3.7.4 Operate logic for SBO/DIR modes....................................................................................... 227
3.7.5 Mapping for IEC61850 communication.............................................................................. 231
3.7.6 Setting................................................................................................................................... 235
3.7.7 Signal (DataID).................................................................................................................... 236
Mode control function (MDCTRL).............................................................................................. 238
3.8.1 Function................................................................................................................................ 239
3.8.2 Mapping for IEC61850 communication.............................................................................. 240
3.8.3 Setting................................................................................................................................... 244
3.8.4 Signal (DataID).................................................................................................................... 245
4Technical description.......................................................................................................................... 247
Case and module slots in MainUnit and SubUnits .................................................................. 249
Transformer module for AC analog input (VCT)....................................................................... 254
4.2.1 VCT23B................................................................................................................................. 255
4.2.2 VCT48B................................................................................................................................. 256
4.2.3 VCT21B................................................................................................................................. 257

6F2S1931 (0.20)
ix
4.2.4 Constitution of VCT............................................................................................................. 258
4.2.5 Setting of VCT...................................................................................................................... 260
4.2.6 VCT combinations................................................................................................................ 263
Signal processing and communication modules (CPU)............................................................ 267
4.3.1 Upstream communication ................................................................................................... 268
4.3.2 MainUnit-SubUnit communication.................................................................................... 269
4.3.3 Type of COM modules.......................................................................................................... 270
4.3.4 OPT2 modules (OPT2)......................................................................................................... 274
Binary IO module (BIO).............................................................................................................. 275
4.4.1 Binary input (BI) feature in BI1A and BIO5A................................................................... 276
4.4.2 Binary input (BI) circuit...................................................................................................... 276
4.4.3 Binary output (BO) feature in BO1A and BIO5A.............................................................. 283
4.4.4 Binary output (BO) circuit .................................................................................................. 284
4.4.5 BIO structure ....................................................................................................................... 289
4.4.6 Settings of binary input circuits ......................................................................................... 292
4.4.7 Signals of binary input circuits........................................................................................... 293
4.4.8 Settings of binary output circuits ....................................................................................... 295
4.4.9 Signals of binary output circuits......................................................................................... 297
Power supply module (PWS) ...................................................................................................... 299
4.5.1 PWS structure...................................................................................................................... 299
4.5.2 Input and output items of PWS .......................................................................................... 301
4.5.3 DC voltage monitoring......................................................................................................... 302
Human Machine Interface (HMI) .............................................................................................. 304
4.6.1 Outlook.................................................................................................................................. 304
4.6.2 LED Indicators..................................................................................................................... 305
4.6.3 Function keys with LEDs.................................................................................................... 310
4.6.4 Monitoring jacks................................................................................................................... 315
4.6.5 Operation keys ..................................................................................................................... 317
Clock function.............................................................................................................................. 318
4.7.1 Clock setting......................................................................................................................... 318
4.7.2 Selection of date and time formats ..................................................................................... 318
4.7.3 Time Synchronization.......................................................................................................... 319
4.7.4 Setting time zone ................................................................................................................. 325
4.7.5 DST setting (Summer time setting).................................................................................... 326
4.7.6 Setting................................................................................................................................... 328
Group setting for protection functions....................................................................................... 329
5Engineering tool.................................................................................................................................. 332
Overview of GR-TIEMS .............................................................................................................. 333
Connection ................................................................................................................................... 334

6F2S1931 (0.20)
x
Common tools .............................................................................................................................. 335
Monitoring tools........................................................................................................................... 335
Record tools.................................................................................................................................. 335
Generic configuration tools......................................................................................................... 336
IEC 61850 configuration tool...................................................................................................... 336
IEC 60870-5-103 configuration tool........................................................................................... 337
Modbus configuration tool .......................................................................................................... 337
Busbar configuration tools.......................................................................................................... 337
6PLC function ....................................................................................................................................... 338
Overview of PLC function........................................................................................................... 339
PLC data error............................................................................................................................. 339
PLC driver.................................................................................................................................... 340
6.3.1 Monitoring point for PLC driver......................................................................................... 340
Timer variable settings using PLC drivers ............................................................................... 344
7Recording function.............................................................................................................................. 349
Fault recorder.............................................................................................................................. 350
7.1.1 Types of recording information ........................................................................................... 350
7.1.2 Screen information............................................................................................................... 351
7.1.3 Operation identifiers (ID1–ID128) ..................................................................................... 352
Event recorder ............................................................................................................................. 359
7.2.1 Trigger signals...................................................................................................................... 359
7.2.2 Trigger modes....................................................................................................................... 368
7.2.3 Screen information............................................................................................................... 369
7.2.4 Setup for the event recorder................................................................................................ 369
Disturbance recorder................................................................................................................... 370
7.3.1 Recording time and amount................................................................................................ 370
7.3.2 Trigger settings for PLC programming.............................................................................. 378
7.3.3 Screen information............................................................................................................... 378
7.3.4 Setting................................................................................................................................... 380
7.3.5 Signal (Data ID)................................................................................................................... 382
Transferred information during fault........................................................................................ 386
7.4.1 Transferred metering values............................................................................................... 387
7.4.2 Transferred information about tripped phase and mode.................................................. 393
7.4.3 Transferred state information............................................................................................. 393
7.4.4 Transferring record value and information ....................................................................... 394
8Metering function ............................................................................................................................... 423
Outline ......................................................................................................................................... 424
Metering data (Metering group)................................................................................................. 424
Metering information on the screen........................................................................................... 425

6F2S1931 (0.20)
xi
Setting for measurements .......................................................................................................... 425
Setting for the report (Dead band feature)................................................................................ 427
Statistics data (Counter group).................................................................................................. 428
Statistics data (Accumulated time)............................................................................................ 429
Setting.......................................................................................................................................... 430
Signal and measurand ................................................................................................................ 431
9Automatic supervision........................................................................................................................ 463
Outline of automatic supervision............................................................................................... 464
Supervision tasks ........................................................................................................................ 467
9.2.1 Mismatch between ROM and RAM data (ROM/RAM error)............................................ 468
9.2.2 Supervision of check-sum error (SUM error)..................................................................... 469
9.2.3 Supervision of RAM (RAM error) ....................................................................................... 470
9.2.4 Supervision of ECC on memory (ECC error) ..................................................................... 471
9.2.5 Supervision of MRAM (MRAM).......................................................................................... 472
9.2.6 Supervision of FPGA (FPGA error)..................................................................................... 473
9.2.7 Supervision of program codes (CPU error) ........................................................................ 474
9.2.8 Supervision of task operation (RUN error)........................................................................ 475
9.2.9 Detecting non-maskable interrupt (NMI error)................................................................. 476
9.2.10 Supervision of sampling period (SMP error)...................................................................... 477
9.2.11 Supervision of setting data (Setting error) ........................................................................ 478
9.2.12 Supervision of real-time clock (RTC error) ........................................................................ 479
9.2.13 Supervision of sampling and transferring data (SA error) ............................................... 480
9.2.14 Supervision of analog input data on VCTs (AI error)........................................................ 481
9.2.15 Abnormal currents flowing in CTs (CT error).................................................................... 482
9.2.16 Supervision of voltage in negative-sequence (V2 error).................................................... 484
9.2.17 Supervision of voltage in zero-sequence (V0 error) ........................................................... 485
9.2.18 Supervision of SubUnit-connection (SUB Conn. Error).................................................... 486
9.2.19 Supervision of binary IO modules (BIO error)................................................................... 487
9.2.20 Supervision of human machine interface (HMI error)...................................................... 489
9.2.21 Supervision of power supply module (Power error)........................................................... 490
9.2.22 Supervision of data in PLC function (PLC data error) ..................................................... 491
9.2.23 Detecting erroneous differential current in the DIF (Id error) ........................................ 493
9.2.24 Current transformer failure (CT fail)................................................................................. 494
9.2.25 Supervision of circuit breaker contacts (CB fail)............................................................... 495
9.2.26 Supervision of disconnector contact (DS fail) .................................................................... 496
9.2.27 Supervision of LAN status (LAN error) ............................................................................. 497
9.2.28 Supervision of response for pinging (Ping error)............................................................... 498
9.2.29 Supervision of link redundant entity (LRE error)............................................................. 499
9.2.30 Supervision of communication setting (Commslv error)................................................... 500

6F2S1931 (0.20)
xii
9.2.31 Supervision of GOOSE publishing (LAN(GOOSE)error).................................................. 502
9.2.32 Setting................................................................................................................................... 503
9.2.33 Signal (Data ID)................................................................................................................... 508
10 Communication protocol................................................................................................................. 514
Selection of slave protocol........................................................................................................... 515
LAN operation ............................................................................................................................. 516
10.2.1 LAN address (IP address).................................................................................................... 516
10.2.2 Redundant LAN (Hot-standby)........................................................................................... 517
10.2.3 Redundant LAN (PRP/HSR operation) .............................................................................. 525
10.2.4 Redundant LAN (RSTP operation)..................................................................................... 529
10.2.5 Settings................................................................................................................................. 531
10.2.6 Signals (DataID) .................................................................................................................. 533
IEC 61850 communication.......................................................................................................... 535
10.3.1 About protocol ...................................................................................................................... 537
10.3.2 Communication service ....................................................................................................... 540
10.3.3 How to manage engineering work ...................................................................................... 543
10.3.4 Settings for 61850 communications.................................................................................... 562
10.3.5 Selection of a slave protocol................................................................................................. 564
10.3.6 How to supervise in 61850 communication........................................................................ 564
10.3.7 Quality signal of IEC 61850 communication ..................................................................... 565
10.3.8 Goose monitoring status in 61850 communication............................................................ 574
10.3.9 Feature of IEC61850 Edition1 option................................................................................. 575
10.3.10 Setting............................................................................................................................... 576
10.3.11 Signal (Data ID) ............................................................................................................... 577
IEC 60870-5-103 communication............................................................................................... 593
10.4.1 Overview............................................................................................................................... 594
10.4.2 Requirements in the Master station................................................................................... 596
10.4.3 Interoperability .................................................................................................................... 597
10.4.4 Communication interface in the IEC 60870-5-103 standard............................................ 598
10.4.5 Editing data of the configuration........................................................................................ 599
10.4.6 Protocol selection.................................................................................................................. 618
10.4.7 Tips for settings.................................................................................................................... 619
10.4.8 Setting................................................................................................................................... 620
10.4.9 Signal (Data ID)................................................................................................................... 621
Modbus communication .............................................................................................................. 622
10.5.1 About protocol ...................................................................................................................... 622
10.5.2 Selection of Modbus protocol............................................................................................... 623
10.5.3 Modbus interface.................................................................................................................. 624
10.5.4 Modbus serial (Modbus RTU) ............................................................................................. 625

6F2S1931 (0.20)
xiii
10.5.5 Modbus TCP ......................................................................................................................... 627
10.5.6 Modbus model....................................................................................................................... 629
10.5.7 Modbus functions................................................................................................................. 630
10.5.8 How to manage Modbus data file ....................................................................................... 633
10.5.9 How to map IED signals to Modbus addresses.................................................................. 637
10.5.10 Setting............................................................................................................................... 644
10.5.11 Signal (Data ID) ............................................................................................................... 645
USB communication.................................................................................................................... 646
RS485 communication ................................................................................................................ 647
11 User interface.................................................................................................................................. 648
Outline ......................................................................................................................................... 649
HMI operation ............................................................................................................................. 652
Record sub-menu......................................................................................................................... 655
Monitoring sub-menu.................................................................................................................. 662
Setting sub-menu ........................................................................................................................ 670
I/O setting sub-menu................................................................................................................... 683
Time sub-menu............................................................................................................................ 689
Test sub-menu.............................................................................................................................. 698
Information sub-menu ................................................................................................................ 704
Security setting sub-menu ...................................................................................................... 705
12 Installation and setting.................................................................................................................. 706
Caution for storage...................................................................................................................... 707
Handling precautions.................................................................................................................. 707
Unpack and inspection of hardware and software ................................................................... 708
SubUnit ID setting...................................................................................................................... 713
PWS alarm threshold setting..................................................................................................... 714
13 Commissioning and maintenance.................................................................................................. 715
Scope of required test.................................................................................................................. 716
Cautions....................................................................................................................................... 717
Preparations ................................................................................................................................ 717
Test operations............................................................................................................................. 719
13.4.1 Test for communication ....................................................................................................... 719
13.4.2 Test for relay application..................................................................................................... 720
13.4.3 Test for BI and BO circuits.................................................................................................. 720
13.4.4 Test for mode change (MDCTRL)........................................................................................ 720
13.4.5 Signal monitor...................................................................................................................... 720
13.4.6 LED light test....................................................................................................................... 721
Setting.......................................................................................................................................... 722
Signal ........................................................................................................................................... 723

6F2S1931 (0.20)
xiv
Appendix 1 Signal lists for common function.................................................................................... 724
Appendix 2 Case outline in MainUnit and SubUnit.......................................................................... 732
Appendix 3 Typical external connections ........................................................................................... 738
Appendix 4 IEC61850 MICS, PICS, PIXIT, and TICS ...................................................................... 748
Appendix 5 IEC60870-5-103 interoperability .................................................................................... 915
Appendix 6 Modbus address, exception status, return diagnostic register ..................................... 933
Appendix 7 Ordering............................................................................................................................ 949
Appendix 8 Technical data................................................................................................................... 963
Appendix 9 Manufacture settings....................................................................................................... 973
Appendix 10 Notes for the dielectric voltage test ................................................................................ 975

6F2S1931 (0.20)
Centralized GRB200
(Soft: 030, 031, 032, 033, 034)
-1-
1 Introduction
Contents
Page
Abbreviation
14
Function identifies and signals (FB)
16
Configuration
2
Metering functions
7
Protection functions
7
Symbols used in logical diagrams
10
─────────────────────────────────────────────────────────────────
Note:
See Chap. 4.3.4 OPT2 modules (OPT2) for the connection between MainUnit and SubUnits.
See, also, Chap. 12.4 SubUnit ID setting using Rotary switch on Optical module(OPT2) on
SubUnits.
If the MainUnit is a stand-alone type, it is placed without being connected with SubUnits.
For replica setting procedure in the GRB200 relay, see a separate manual entitled Replica
setting procedure for Centralized Busbar protection IED (GRB200) (Document No.
6F2S1923).

6F2S1931 (0.20)
Centralized GRB200
(Soft: 030, 031, 032, 033, 034)
-2-
GRB200 is a low impedance differential relay for bus-bar protection; and it has been designed
to provide very reliable, high speed and selective protection for various types of bus-bar system.
GRB200 can be applied for various bus-bar systems:
Single bus-bars with/without transfer bus-bar
Double bus-bars with/without transfer bus-bar
Ring bus-bars with/without transfer bus-bar
One and a half bus-bar
GRB200 can detect phase and earth faults on the protected bus-bar by employing a phase
segregated current differential scheme. The maximum of 24 three-phase currents can be
acquired from feeders, sections and bus-couplers, which can correctly distinguish between
internal and external faults even in the event of CT saturation.
Circuit breaker failure protection, end zone protection and blind zone protection are
also available.
Backup overcurrent and earth fault protections are provided as options in each bay.
Configuration
Figure 1.1-1 shows the configuration for the busbar protection, which is achieved with main-
unit (MainUnit) and sub-units (SubUnit#1, SubUnit#2) operations. The MainUnit has a signal
processing module, which operates for the applications; it also operates for the control and
monitoring. The SubUnit#1 and the SubUnit#2 are reinforcement units when the MainUnit is
not able to get all signals of the busbar system; the both SubUnits will be used when a larger
system should be protected.

6F2S1931 (0.20)
Centralized GRB200
(Soft: 030, 031, 032, 033, 034)
-3-
Busbar 1
Busbar 2
Busbar 3
Busbar 4
DS closed
DS open
CB closed
CB open
West feeder
North coupler
South coupler
West coupler
Forward looking protection bay (CH)
CT
CH1
CH2
CH3
CH4
CH6
CH8
CB/DS control signals
Optical cables
MainUnit
SubUnit#1
SubUnit#2
CH5
CH7
Voltages
Currents
CB/DS signals
Currents
CB/DS signals
Current signals
VT
Voltage signals
ZoneA
ZoneB
ZoneE
ZoneD
Protection zone
CH11
CB/DS signals
Current
CH9
CH10
0
C
F
Figure 1.1-1 Example of bausbar protection
Figure 1.1-1 illustrates a MainUnit and a SubUnit protecting four zones (ZoneA to ZoneF).
Every current, control and monitoring signal in a bay is bundled as a channel (CH); the CHs
are linked with the VCT and the BIO in the MainUnit and the SubUnit. We will discuss
hardware configurations in the foregoing sections.
(i) MainUnit hardware
Figure 1.1-2 and Figure 1.1-3 shows that the MainUnit case is 1/1 case size of the 19-inch rack.

6F2S1931 (0.20)
Centralized GRB200
(Soft: 030, 031, 032, 033, 034)
-4-
Signal processing and communication modules (CPU), Transformer modules (VCTs), Binary
IO modules (BIs, BOs, and BIOs), and Power supply module (PWS) are arranged as shown.
As for the ‘Max. dual ports’type (see Figure 1.1-2), an OPT2 is mounted on CPU in order to
communicate with the subunits using fiber cables. Whilst for the ‘Dual ports with LAN for
Local PC’type (see Figure 1.1-3), it can be mounted on PCX. If the ‘Stand-alone’ type is selected,
it is mounted neither the CPU nor the PCX in the MainUnit.
VCT#1
CPU
BI, BO, BIO
PWS
VCT#2
Figure 1.1-2 MainUnit structure design (for Stand-alone type or Max. dual ports)
VCT#1
CPU
BI, BO, BIO
PWS
VCT#2
PCX
Figure 1.1-3 MainUnit structure design (for the Dual ports with LAN for local PC)
Figure 1.1-4 shows a block diagram of the MainUnit.A Human machine interface (HMI) is
mounted on the front of the IED. The user can monitor and configure setting items and other
actions through the HMI. Configuration of the module depends on the order. For the actual

6F2S1931 (0.20)
Centralized GRB200
(Soft: 030, 031, 032, 033, 034)
-5-
configuration module (and the number of modules), see the IO configuration label on the case
(See Chapter Installation and setting: Unpack and inspection of hardware and software ).
VCT#1, VCT#2
CT×n
VT×m
Filter
A/D
I
V
HMI
LEDs
Operation keys
Monitoring jacks
Function Key
LCD/Large LCD
Local PC
PSW
USB
I/F
Power
Photo coupler
×9
Auxiliary
relay
×9
Binary outputs
Binary inputs
Photo coupler
×18
Auxiliary
relay
×18
BO1A
Binary output
Binary input
CPU
CP1M
LAN I/F
LAN I/F
LAN I/F
PCX
LAN for
engineering
tools
POPT2
SubUnit#1
SubUnit#2
BI1A
BIO5A
Communication
Network for SAS,
etc.
CPU
CP1M
LAN I/F
LAN I/F
POPT2
Communication
Network for SAS,
etc.
SubUnit#1
SubUnit#2
Designed for the Dual ports with LAN for Local PC
Designed for the Max Dual ports
CPU
CP1M
LAN I/F
LAN I/F
LAN I/F
LAN for
engineering
tools
Communication
Network for SAS,
etc.
IRIG-B
RS-485
Designed for the Stand-alone type
(The MainUnit is not connected with SubUnits.
Figure 1.1-4 MainUnit hardware block diagram
Note: The structure for the Dual ports plus LAN for Local PC is shown in the dash
dotted line. The OPT2 is not included in the stand-alone type of the MainUnit.
(ii) SubUnit hardware
Figure 1.1-5 shows modules implemented in the SubUnit(1/1 case). PWS, BIOs, VCTs, and
CPU are provided. The OPT2 is mounted on CPU, which is used to connect with the MainUnit.
Figure 1.1-6 shows a block diagram of the SubUnit. Note that the HMI is not mounted on the
front of the SubUnit.

6F2S1931 (0.20)
Centralized GRB200
(Soft: 030, 031, 032, 033, 034)
-6-
VCT#1
CPU
BIOs
PWS
VCT#2
Figure 1.1-5 SubUnit structure design
VCT#1, VCT#2
CT×n
Filter
A/D
CPU
I
PSW
MainUnit
POPT2
Power
BIO5
Photo coupler
×9
Auxiliary
relay
×9
Binary outputs
Binary inputs
BIO5
Photo coupler
×9
Auxiliary
relay
×9
Binary outputs
Binary inputs
Figure 1.1-6 SubUnit hardware block diagram.
(iii) Communication hardware
- 100Base-TX/1000Base-T/100Base-FX/1000Base-LX(IEC61850 / Modbus TCP)
- RS485 (IEC60870-5-103 / Modbus RTU)
- Fiber optic (IEC60870-5-103)
- USB/LAN (GR-TIEMS engineering tool)
- IRIG-B (Time synchronization)