Toshiba GR 200 Series User manual

6F2T0200 (Rev. 0.15)
Instruction manual
Multi functional protection IED
GR-200 series (GRE200 -1 & -2 models)

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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.
•Fiber optic
Class 1 laser product
DANGER
WARNING
DANGER
WARNING

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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(link)
Do not remove the short-link wire(s) connected to the frame earth (FG) at the terminal block
on the rear of the relay.
•Electric wire on DC/DC power-supply (between #17 - FG)
Make sure the wire is connected.
(Exception: This wire needs to be detached for performing the dielectric voltage test.)

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•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

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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.

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Contents
1 Introduction ......................................................................................................................................... 1
Relay applications......................................................................................................................... 2
Control and monitoring application............................................................................................. 5
Monitoring and recording functions ............................................................................................ 5
Hardware overview....................................................................................................................... 6
Symbols used in logical diagrams................................................................................................ 7
Abbreviation.................................................................................................................................11
Function Block (FB), Function ID, Signal number (Data ID) .................................................. 12
2 Relay application ............................................................................................................................... 14
Overcurrent protection (OC) ...................................................................................................... 16
2.1.1 Relay polarity ...................................................................................................................... 17
2.1.2 Inverse time and definite time delay characteristic .......................................................... 21
2.1.3 Threshold value for operation............................................................................................. 28
2.1.4 Reset Ratio........................................................................................................................... 28
2.1.5 Application for motor protection......................................................................................... 29
2.1.6 Miscellaneous functions ...................................................................................................... 30
2.1.7 Scheme logic ........................................................................................................................ 31
2.1.8 Setting.................................................................................................................................. 33
2.1.9 Signal ................................................................................................................................... 38
Earth fault protection (EF) ........................................................................................................ 41
2.2.1 Relay polarity ...................................................................................................................... 42
2.2.2 Inverse time and definite time delay characteristic .......................................................... 44
2.2.3 Threshold level for operation .............................................................................................. 49
2.2.4 Reset Ratio........................................................................................................................... 49
2.2.5 Miscellaneous functions ...................................................................................................... 50
2.2.6 Scheme logic ........................................................................................................................ 50
2.2.7 Setting.................................................................................................................................. 52
2.2.8 Signal ................................................................................................................................... 56
Directional earth fault command protection (DEFCAR) .......................................................... 58
2.3.1 Permissive overreach protection (POP).............................................................................. 59
2.3.2 Unblocking overreach protection (UOP)............................................................................. 62
2.3.3 Blocking overreach protection (BOP) ................................................................................. 62
2.3.4 Setting.................................................................................................................................. 65
2.3.5 Signal ................................................................................................................................... 66
Sensitive earth fault protection (SEF)....................................................................................... 69
2.4.1 Relay polarity ...................................................................................................................... 70
2.4.2 Inverse time and definite time delay characteristic .......................................................... 72
2.4.3 Threshold level for operation .............................................................................................. 79

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2.4.4 Reset Ratio........................................................................................................................... 79
2.4.5 Miscellaneous functions ...................................................................................................... 79
2.4.6 Setting for Petersen coil earthed system............................................................................ 80
2.4.7 Setting of standby earth-fault............................................................................................. 81
2.4.8 Scheme logic ........................................................................................................................ 81
2.4.9 Setting.................................................................................................................................. 84
2.4.10 Signal ................................................................................................................................... 89
Negative sequence overcurrent protection (OCN)..................................................................... 91
2.5.1 Relay polarity ...................................................................................................................... 91
2.5.2 Inverse time and definite time delay characteristic .......................................................... 93
2.5.3 Threshold value ................................................................................................................... 99
2.5.4 Reset Ratio........................................................................................................................... 99
2.5.5 Miscellaneous functions ...................................................................................................... 99
2.5.6 Scheme logic ...................................................................................................................... 100
2.5.7 Setting................................................................................................................................ 102
2.5.8 Signal ................................................................................................................................. 107
Undercurrent protection (UC).................................................................................................. 109
2.6.1 Operation and characteristic .............................................................................................110
2.6.2 Miscellaneous functions .....................................................................................................110
2.6.3 Scheme switch ....................................................................................................................110
2.6.4 Setting.................................................................................................................................112
2.6.5 Signal ..................................................................................................................................113
Switch on to fault (SOTF-OC)...................................................................................................114
2.7.1 Scheme logic .......................................................................................................................114
2.7.2 Setting.................................................................................................................................116
2.7.3 Signal ..................................................................................................................................116
Broken conductor protection (BCD)..........................................................................................117
2.8.1 Equivalent circuit for a one-phase series fault .................................................................118
2.8.2 Characteristic and setting................................................................................................. 120
2.8.3 Miscellaneous functions .................................................................................................... 120
2.8.4 Scheme logic ...................................................................................................................... 121
2.8.5 Setting................................................................................................................................ 122
2.8.6 Signal ................................................................................................................................. 122
Thermal overload function (THM)........................................................................................... 123
2.9.1 Thermal state determination............................................................................................ 124
2.9.2 Thermal characteristic...................................................................................................... 125
2.9.3 Scheme logic ...................................................................................................................... 126
2.9.4 Setting................................................................................................................................ 127
2.9.5 Signal ................................................................................................................................. 127

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Inrush current detection function (ICD).................................................................................. 128
2.10.1 Operation and characteristic ............................................................................................ 129
2.10.2 Scheme logic ...................................................................................................................... 129
2.10.3 Setting................................................................................................................................ 130
2.10.4 Signal ................................................................................................................................. 130
Cold load protection (CLP) ....................................................................................................... 131
2.11.1 Scheme logic ...................................................................................................................... 132
2.11.2 Setting................................................................................................................................ 134
2.11.3 Signal ................................................................................................................................. 134
Circuit breaker fail protection (CBF)....................................................................................... 135
2.12.1 CBF operation and its elements ....................................................................................... 136
2.12.2 Re-trip feature ................................................................................................................... 136
2.12.3 Backup feature .................................................................................................................. 137
2.12.4 Scheme logic ...................................................................................................................... 138
2.12.5 Operation timing ............................................................................................................... 140
2.12.6 Setting................................................................................................................................ 141
2.12.7 Signal ................................................................................................................................. 142
Under-voltage protection for phase-to-natural (UV)............................................................... 143
2.13.1 Drop-off and pick-up characteristic .................................................................................. 144
2.13.2 Time characteristic............................................................................................................ 144
2.13.3 Miscellaneous functions .................................................................................................... 146
2.13.4 Scheme logic ...................................................................................................................... 147
2.13.5 Setting................................................................................................................................ 150
2.13.6 Signal ................................................................................................................................. 152
Phase-to-phase under-voltage protection (UVS) ..................................................................... 155
2.14.1 Drop-off and pick-up characteristic .................................................................................. 156
2.14.2 Time characteristic............................................................................................................ 156
2.14.3 Miscellaneous functions .................................................................................................... 158
2.14.4 Scheme logic ...................................................................................................................... 159
2.14.5 Setting................................................................................................................................ 162
2.14.6 Signal ................................................................................................................................. 164
Overvoltage protection for phase-to-neutral (OV)................................................................... 167
2.15.1 Drop-off and pickup characteristic ................................................................................... 168
2.15.2 Delay for the operation of the OV element....................................................................... 168
2.15.3 Time characteristic............................................................................................................ 168
2.15.4 Miscellaneous functions .................................................................................................... 170
2.15.5 Scheme logic ...................................................................................................................... 171
2.15.6 Setting................................................................................................................................ 173
2.15.7 Signal ................................................................................................................................. 175

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Overvoltage protection for phase-to-phase (OVS)................................................................... 177
2.16.1 Drop-off and pickup setting............................................................................................... 178
2.16.2 Delay for the operation of the OVS element .................................................................... 178
2.16.3 Time characteristic............................................................................................................ 178
2.16.4 Miscellaneous functions .................................................................................................... 180
2.16.5 Scheme logic ...................................................................................................................... 181
2.16.6 Setting................................................................................................................................ 183
2.16.7 Signal ................................................................................................................................. 185
Earth fault overvoltage protection (OVG) ............................................................................... 187
2.17.1 Drop-off and pickup setting............................................................................................... 188
2.17.2 Delay of the operation of the OVG element...................................................................... 188
2.17.3 Time characteristic............................................................................................................ 188
2.17.4 Miscellaneous functions .................................................................................................... 190
2.17.5 Scheme logic ...................................................................................................................... 191
2.17.6 Setting................................................................................................................................ 193
2.17.7 Signal ................................................................................................................................. 195
Negative sequence overvoltage protection (OVN)................................................................... 196
2.18.1 Drop-off and pickup setting............................................................................................... 197
2.18.2 Delay of the operation of the OVN element ..................................................................... 197
2.18.3 Time characteristic............................................................................................................ 197
2.18.4 Miscellaneous functions .................................................................................................... 199
2.18.5 Scheme logic ...................................................................................................................... 200
2.18.6 Application......................................................................................................................... 201
2.18.7 Setting................................................................................................................................ 202
2.18.8 Signal ................................................................................................................................. 204
Frequency protection with 8 stages (FRQ/DFRQ) .................................................................. 205
2.19.1 FRQ features and characteristics ..................................................................................... 206
2.19.2 DFRQ features and characteristics .................................................................................. 209
2.19.3 Rapid change detector........................................................................................................211
2.19.4 Setting................................................................................................................................ 216
2.19.5 Signal ................................................................................................................................. 218
VT failure detection (VTF) ....................................................................................................... 222
2.20.1 VTF features...................................................................................................................... 223
2.20.2 Operation for the VTF function ........................................................................................ 223
2.20.3 Scheme Logic ..................................................................................................................... 224
2.20.4 Setting................................................................................................................................ 226
2.20.5 Signal ................................................................................................................................. 227
CT failure detection (CTF) ....................................................................................................... 228
2.21.1 CTF features...................................................................................................................... 229

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2.21.2 Operation for the CTF function ........................................................................................ 229
2.21.3 Scheme logic ...................................................................................................................... 229
2.21.4 Setting................................................................................................................................ 231
2.21.5 Signal ................................................................................................................................. 232
Three-phase autoreclose (ARC)................................................................................................ 233
2.22.1 Outline ............................................................................................................................... 234
2.22.2 Terminology ....................................................................................................................... 235
2.22.3 Function block diagram..................................................................................................... 238
2.22.4 Autoreclosing logic............................................................................................................. 239
2.22.5 Timing diagrams ............................................................................................................... 245
2.22.6 Shot number coordination................................................................................................. 248
2.22.7 Miscellaneous feature........................................................................................................ 252
2.22.8 Application guidelines....................................................................................................... 253
2.22.9 Setting................................................................................................................................ 258
2.22.10 Signal.............................................................................................................................. 259
Three-phase trip circuit (TRC)................................................................................................. 261
2.23.1 Command for tripping CB and signal to block reclosing CB........................................... 263
2.23.2 Recording identifiers for respective fault types ............................................................... 264
2.23.3 Scheme logic ...................................................................................................................... 265
2.23.4 Setting................................................................................................................................ 268
2.23.5 Signal ................................................................................................................................. 269
Protection common (PROT_COMMON) .................................................................................. 271
2.24.1 Decision of CB open/close status....................................................................................... 272
2.24.2 Decision of DS open/close status....................................................................................... 274
2.24.3 Dead line detection............................................................................................................ 275
2.24.4 Detection of current change (OCD)................................................................................... 276
2.24.5 User logic switches ............................................................................................................ 277
2.24.6 Setting................................................................................................................................ 278
2.24.7 Signal ................................................................................................................................. 279
Voltage check for autoreclose (VCHK)..................................................................................... 281
2.25.1 Voltage condition and check zone ..................................................................................... 282
2.25.2 Synchronism check scheme............................................................................................... 283
2.25.3 VCHK setting .................................................................................................................... 287
2.25.4 Check logic for the voltage and the synchronism............................................................. 291
2.25.5 Setting................................................................................................................................ 292
2.25.6 Signal ................................................................................................................................. 293
Single-end fault locator (FL) .................................................................................................... 294
2.26.1 Computation method......................................................................................................... 295
2.26.2 Output of FL computation on display............................................................................... 298