Toshiba GRE110 User Manual

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6 F 2 T 0 1 7 2

INSTRUCTION MANUAL

OVERCURRENT PROTECTION RELAY

GRE110

© TOSHIBA Corporation 2013

All Rights Reserved.

( Ver. 5.3)

Table of Contents

Default Chapter2
- Explanation of Symbols Used2
Safety Precautions2
- Table of Contents4
1 Introduction7
- Series Members and Functions8
2 Application Notes9
- Inverse Time Overcurrent Protection9
- Phase Overcurrent and Residual Overcurrent Protection9
- Time-Distance Characteristics of Inverse Time Protection9
- IDMT Characteristics10
- Programmable Reset Characteristics10
- Definite Time Reset11
- Dependent Time Reset11
- Definite Time Overcurrent Protection12
- Dependent Time Reset Characteristics12
- Specification of IDMT Curves12
- Scheme Logic13
- Earth Fault Overcurrent Protection EF114
- Phase Fault Overcurrent Protection OC114
- Settings15
- Current Setting16
- Current Settings in Radial Feeder16
- Settings for Inverse Time Overcurrent Protection16
- Time Setting16
- Instantaneous and Staged Definite Time Overcurrent Protection17
  - Selective Instantaneous Overcurrent Protection17
  - Conjunction of Inverse and Instantaneous Overcurrent Protection18
  - Feeder Protection Coordinated with Fuses18
  - Operate Time18
  - Staged Definite Time Overcurrent Protection18
  - Phase Overcurrent Protection OC219
  - Staged Definite Time Protection19
  - Earth Fault Protection EF220
  - Phase Overcurrent Protection OC3/OC420
  - Earth Fault Protection EF3/EF421
  - Setting21
  - 2 Phase CT Wiring23
  - CT Wiring and Setting of Earth Fault Detection23
  - CT Wiring of 2 Phase CT23
  - Earth Fault Current Detection Wiring23
  - Restricted Earth Fault Protection24
- Sensitive Earth Fault Protection24
  - Standby Earth Fault Protection24
  - High Impedance REF25
  - Inverse Time or Definite Time SEF Protection SEF1/SEF226
  - Definite Time SEF Scheme Logic27
  - Sef28
  - Maximum Voltage under through Fault Condition29
  - Diretctional Sensitive Earth Fault Protection (at Model 820 and 821)30
  - Directional Element31
  - Directional Operate SEF Characteristic31
  - Relationship Polarising Signal31
  - SEF1/SEF2 Sensitive Earth Fault Protection Scheme Logic for Models 820 and 82132
  - SEF3/SEF4 Sensitive Earth Fault Protection Scheme Logic for Models 820 and 82133
- Phase Undercurrent Protection35
- Undercurrent Protection Scheme Logic35
- Thermal Overload Protection37
  - Thermal Curves38
  - Thermal Overload Protection Scheme Logic38
- Negative Sequence Overcurrent Protection39
- Negative Sequence Overcurrent Protection Scheme Logic40
- Broken Conductor Protection41
  - Equivalent Circuit for a Single-Phase Series Fault41
  - BCD Element Characteristic42
  - Broken Conductor Protection Scheme Logic43
- Breaker Failure Protection44
  - Breaker Failure Protection Scheme Logic45
  - Sequence Diagram45
- Countermeasures for Magnetising Inrush47
  - ICD Block Scheme47
  - ICD Element Characteristic47
  - Inrush Current Detector47
  - Cold Load Protection48
  - Scheme Logic for Cold Load Protection49
  - State Transition Diagram for Cold Load Protection49
- Trip Signal Output50
- Tripping Output for Local Circuit Breaker51
- Application of Protection Inhibits52
  - Blocked Overcurrent Protection52
  - Tripping Output for Adjacent Circuit Breakers52
  - Blocked Busbar Protection53
- CT Requirements54
  - Phase Fault and Earth Fault Protection54
  - Minimum Knee Point Voltage55
- Autoreclose56
  - Multi-Shot Autoreclose56
  - Autoreclose Scheme Logic57
  - Autoreclose Initiation58
  - Autoreclose Shot Output (ARC-SHOT)58
  - PLC Default Setting58
  - Autoreclose Success Judgement (ARC-SUCCESS)59
  - Autoreclosing Requirement59
  - Final Trip Judgement (ARC-FT)59
  - Reset59
  - Manual Close Function60
  - Manual Input Function60
3 Technical Description63
- Hardware Description63
- Outline of Front Panel63
- Front Panel (Model 400 / 420 / 401 / 421 / 820 / 821 )64
- AC Input Signals65
- Binary Input Signals65
- Input and Output Signals65
- Automatic Supervision70
- Recording Function76
- Metering Function79
4 User Interface80
- Front Panel80
- Lcd80
- Outline of User Interface80
- Operation Keys81
- Communication Ports82
- Optional Fibre or Ethernet LAN Port for Model 402A and 422A82
- RS485 Port82
- USB Port82
- Displays During Normal Operation83
- Indication83
- LCD and LED Displays83
- Operation of the User Interface83
- Personal Computer Interface151
- Clock Function152
  - LCD and LED Check Mode153
  - LCD Contrast Adjustment Mode153
- Special Mode153
5 Installation154
- Flush Mounting154
- Receipt of Relays154
- Relay Mounting154
- Flush Mounting the Case into a Panel Cut-Out155
- Dimensions156
- Power Supply156
- Rear View of GRE110 with Tighten the Screw of the Mounting Attachment Kits156
- Side View of GRE110 with the Mounting Attachment Kit Positions156
- Analogue Inputs157
- Binary Inputs157
- Binary Outputs (Output Relays)157
- Electrostatic Discharge158
6 Commissioning and Maintenance159
- Cautions159
- Hardware Tests159
- Outline of Commissioning Tests159
- Cautions on Tests160
- Preparations160
- Hardware Tests161
- Function Test163
- Conjunctive Tests173
- Maintenance175
7 Putting Relay into Service178
Appendix A179
- Implementation of Thermal Model to IEC60255-149181
Appendix B183
- Signal List184
Appendix C191
- Event Record Items192
Appendix D196
- Binary Output Default Setting List197
Appendix E199
- Relay Menu Tree200
Appendix F210
- Case Outline for Model 400,401,420, 421, 820 and 821211
- Case Outline for Model 402 and 422212
Appendix G213
- Typical External Connection of GRE110 - 400A214
- Typical External Connection of GRE110 – 401A215
- Typical External Connection of GRE110 – 420A216
- Typical External Connection of GRE110 – 421A217
- Typical External Connection of GRE110 – 402A218
- Typical External Connection of GRE110 – 422A219
- Typical External Connection of GRE110 – 821A220
- Typical External Connection of GRE110 – 401A 2CT Application221
- Typical External Connection of GRE110 – 420A 2CT Application222
- Relay Setting Sheet Contents223
Appendix H223
- Relay Setting Sheet225
- Commissioning Test Sheet Contents241
Appendix I241
Appendix J245
- Return/Repair Form246
- Reason for Returning the Relay246
Appendix K250
- Technical Data251
- Environmental Performance254
- AND Gates257
- OR Gates257
- Signal Names257
- Symbols Used in the Scheme Logic257
- Flip-Flop258
- One-Shot Timer258
- Signal Inversion258
- Timer258
- Application Layer260
- Modbus: Interoperability260
- Physical and Data Link Layer260
- Modbus Address Map262
- Modbus Address Map Group262
- Time Synchronization262

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Toshiba GRE110 Specifications

General

Brand	Toshiba
Model	GRE110
Category	Protection Device
Language	English

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