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Table Of Contents - Toshiba GRE110 Instruction Manual

Overcurrent protection relay

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Table of Contents

Safety Precautions2

Explanation Of Symbols Used2

Table Of Contents4

Series Members And Functions8

Application Notes9

Phase Overcurrent And Residual Overcurrent Protection9

Inverse Time Overcurrent Protection9

Time-Distance Characteristics Of Inverse Time Protection9

Programmable Reset Characteristics10

Idmt Characteristics10

Definite Time Reset11

Dependent Time Reset11

Definite Time Overcurrent Protection12

Specification Of Idmt Curves12

Dependent Time Reset Characteristics12

Phase Fault Overcurrent Protection Oc114

Earth Fault Overcurrent Protection Ef114

Settings For Inverse Time Overcurrent Protection16

Current Setting16

Current Settings In Radial Feeder16

Instantaneous And Staged Definite Time Overcurrent Protection17

Selective Instantaneous Overcurrent Protection17

Staged Definite Time Overcurrent Protection18

Conjunction Of Inverse And Instantaneous Overcurrent Protection18

Feeder Protection Coordinated With Fuses18

Staged Definite Time Protection19

Phase Overcurrent Protection Oc219

Phase Overcurrent Protection Oc3/Oc420

Earth Fault Protection Ef220

Earth Fault Protection Ef3/Ef421

Ct Wiring And Setting Of Earth Fault Detection23

Ct Wiring Of 2 Phase Ct23

Earth Fault Current Detection Wiring23

2 Phase Ct Wiring23

Sensitive Earth Fault Protection24

Standby Earth Fault Protection24

Restricted Earth Fault Protection24

High Impedance Ref25

Inverse Time Or Definite Time Sef Protection Sef1/Sef226

Definite Time Sef Scheme Logic27

Maximum Voltage Under Through Fault Condition29

Diretctional Sensitive Earth Fault Protection (At Model 820 And 821)30

Directional Operate Sef Characteristic31

Directional Element31

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

Inrush Current Detector47

Icd Element Characteristic47

Icd Block Scheme47

Cold Load Protection48

State Transition Diagram For Cold Load Protection49

Scheme Logic 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

Multi-Shot Autoreclose56

Autoreclose Scheme Logic57

Autoreclose Initiation58

Autoreclose Shot Output (Arc-Shot)58

Plc Default Setting58

Autoreclose Success Judgement (Arc-Success)59

Final Trip Judgement (Arc-Ft)59

Autoreclosing Requirement59

Manual Close Function60

Manual Input Function60

Technical Description63

Hardware Description63

Outline Of Front Panel63

Front Panel (Model 400 / 420 / 401 / 421 / 820 / 821 )64

Input And Output Signals65

Ac Input Signals65

Binary Input Signals65

Function Selection67

Logic Level Inversion67

Function Scheme Logic67

Function Of Binary Input Signals68

Binary Output Signals69

Configurable Output69

Automatic Supervision70

Plc (Programmable Logic Controller) Function70

Basic Concept Of Supervision70

Relay Monitoring71

Ac Input Imbalance Monitoring71

Memory Monitoring71

Watchdog Timer71

Trip Circuit Supervision72

Trip Circuit Supervision By 1 Binary Input72

Supervision Scheme Logic72

Circuit Breaker State Monitoring73

Trip Circuit Supervision By 2 Binary Inputs73

Cb State Monitoring Scheme Logic73

Failure Alarms74

Circuit Breaker Condition Monitoring74

Binary Input Setting For Cb Condition Monitoring74

Trip Blocking75

Supervision Items And Alarms75

Recording Function76

Fault Recording76

Date And Time Occurrence76

Event Recording77

Faulted Phase77

Power System Quantities77

Displayed Power System Quantities77

Post Fault Recording Time And Number Of Disturbance Records Stored78

Metering Function79

Control Function79

User Interface80

Outline Of User Interface80

Operation Keys81

Communication Ports82

Optional Fibre Or Ethernet Lan Port For Model 402A And 422A82

Operation Of The User Interface83

Lcd And Led Displays83

Displays During Normal Operation83

Displays In Tripping84

Displays In Automatic Supervision Operation84

Auto-Supervision84

Alarm Display85

Displaying Records88

Displaying Fault Records88

Displaying Event Records90

Displaying Disturbance Records92

Displaying The Status95

Displaying Metering Data95

Displaying The Status Of Binary Inputs And Outputs97

Displaying The Status Of Measuring Elements97

Displaying The Status Of The Time Synchronisation Source98

Clock Adjustment99

Viewing The Settings100

Relay Version100

Changing The Settings102

Setting Method102

To Enter Numerical Values104

To Complete The Setting104

Password Trap105

Canceling Or Changing The Password106

If You Forget The Password106

Communication107

Settings For Iec60870-5-103 Communication109

Settings For Iec61850 Communication109

Setting For Modbus Communication109

Setting The Recording112

Setting The Event Recording112

Setting The Counter114

Setting The Metering115

Setting The Time Synchronisation115

Setting The Time Zone116

Changing The Active Group116

Setting The Common117

Setting The Group117

Setting The Parameter117

Setting The Trip Function118

Setting The Scheme Switch118

Setting The Application118

Setting The Pf Protection119

Setting The Sef Protection123

Setting The Misc. Protection125

Setting The Protection Elements127

Setting The Ef Protection128

Setting The Autoreclose Function131

Setting The The Arc General Function131

Setting The Oc, Ef, Sef Elements For Arc132

Setting The Arc Misc. Elements133

Setting Arc Element134

Binary Input135

Setting Group Copy135

Setting Binary Input Status135

Selection Of Binary Input136

Setting Timers137

Setting Functions137

Binary Output139

Selection Of Output Relay140

Setting The Logic Gate Type And Timer140

Assigning Signals141

Selection Of Leds141

Selection Of Real Leds141

Setting The Leds Color143

Selection Of Virtual Leds143

Setting The Reset Timing144

Local/Remote Control146

Cb Close/Open Control146

Scheme Switch148

Binary Output Relay149

Personal Computer Interface151

Modbus Interface151

Iec 60870-5-103 Interface151

Iec 61850 Communication151

Clock Function152

Special Mode153

Lcd Contrast Adjustment Mode153

Lcd And Led Check Mode153

Installation154

Receipt Of Relays154

Relay Mounting154

Flush Mounting154

Flush Mounting The Case Into A Panel Cut-Out155

Power Supply156

Side View Of Gre110 With The Mounting Attachment Kit Positions156

Rear View Of Gre110 With Tighten The Screw Of The Mounting Attachment Kits156

Analogue Inputs157

Binary Inputs157

Binary Outputs (Output Relays)157

Electrostatic Discharge158

Handling Precautions158

External Connections158

Optinal Case Model S1-Gre110, S3-Gre110158

Commissioning And Maintenance159

Outline Of Commissioning Tests159

Hardware Tests159

Preparations160

Cautions On Tests160

Test Equipment160

Relay Settings160

User Interfaces161

Binary Input Circuit161

Testing Binary Input Circuit161

Binary Output Circuit162

Function Test163

Ac Input Circuits163

Measuring Element163

Testing Ac Input Circuit163

Assigning Signal To Binary Output Relay165

Overcurrent And Undercurrent Element Oc1 To Oc4, Uc1, Uc2 And Cbf166

Operating Current Check167

Operating Current Value Test Circuit167

Operating Time Check For Idmt Curve168

Testing Idmt168

Earth Fault Element Ef1 To Ef4 And Sef1 To Sef4169

Test Circuit For Ef And Sef Elements169

Thermal Overload Element Thma And Thmt170

Testing Idmt For Ef And Sef Elements170

Negative Sequence Overcurrent Element Nps1 And Nps2171

Testing Nps Elements171

Broken Conductor Detection Element Bcd172

Testing Bcd Element172

Conjunctive Tests173

Protection Scheme173

Metering And Recording173

On Load Test173

Tripping Circuit Test174

Tripping Circuit174

Regular Testing175

Failure Tracing And Repair175

Replacing Failed Relay176

Lcd Message And Alarm Location176

Resumption Of Service177

Putting Relay Into Service178

Implementation Of Thermal Model To Iec60255-149181

Event Record Items192

Binary Output Default Setting List197

Relay Menu Tree200

Case Outline For Model 400,401,420, 421, 820 And 821211

Case Outline For Model 402 And 422212

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

Relay Setting Sheet225

Commissioning Test Sheet Contents241

Return/Repair Form246

Reason For Returning The Relay246

Technical Data251

Environmental Performance254

Symbols Used In The Scheme Logic257

Signal Names257

Signal Inversion258

One-Shot Timer258

Modbus: Interoperability260

Physical And Data Link Layer260

Application Layer260

Modbus Address Map Group262

Modbus Address Map262

Time Synchronization262

Modbus Address For Setting Values270

Activate Characteristic272

Setting Group272

Current L1 Ia 1,2 Or273

Current L2 Ib 1,2 Or273

Current L3 Ic 1,2 Or273

Cb Remote Control286

Pass Word Authentication287

Enable Flag Setting For Remote Control287

Remote Control287

Iec60870-5-103: Interoperability290

Physical Layer290

Iec60870-5-103 Interface290

Electrical Interface: Eia Rs-485290

List Of Information291

Generic Functions293

Read Directory Of A Single Entry293

Inverse Time Characteristics299

Normal Inverse299

Very Inverse299

Extremely Inverse300

Long Time Inverse300

Moderately Inverse301

Co2 Short Time Inverse303

Iec61850 Interoperability305

Iec61850 Documentation305

Common Data Classes In Iec61850-7-3307

Logical Nodes For Gre110325

Iec61850 Acsi Conformance Statement For Gre Series Ied326

Pics For A-Profile Support330

Pics For T-Profile Support330

Pixit For Association Model331

Pixit For Server Model332

Pixit For Data Set Model333

Pixit For Substitution Model333

Pixit For Setting Group Control Model333

Pixit For Reporting Model334

Pixit For Logging Model335

Pixit For Generic Substation Events Model335

Pixit For Control Model338

Pixit For Time And Time Synchonisation Model340

Pixit For File Transfer Model341

Iec61850 Tissues Conformance Statement (Tics) Of The Iec61850 Communication Interface Gre Series Ied342

Optional Intop Tissues344

Other Implemented Tissues344

Overcurrent Relay347

Version-Up Records348

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