GE MiCOM P747 Agile

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4. Wear a 1 MΩ earth strap and connect it to the earth (ground) point on the back of the IED.

E01019

5. Lift the upper and lower flaps. Remove the six screws securing the front panel and pull the front panel

outwards.

E01020

Chapter 8 - Redundant Ethernet MiCOM P747

260 P747-TM-EN-1

P747-TM-EN-1.1

Main Page

Default Chapter3
- Table of Contents3
Chapter 1 Introduction21
- Trip Circuit Supervision Scheme22
- Rear Serial Port22
Chapter Overview23
- Measurement Table23
- Trip Circuit Supervision Scheme23
- Cip23
Foreword24
- Target Audience24
- Typographical Conventions24
- Nomenclature24
- Cip24
- Product Scope25
- Cip25
Features and Functions26
- Protection Functions26
- Control Functions26
- Measurement Functions26
- Cip26
- Communication Functions27
- Cip27
Compliance28
Functional Overview29
- Cip29
- Figure 1: Functional Overview29
Ordering Options30
Chapter 2 Safety Information31
Chapter Overview33
Chapter Overview Health and Safety Symbols33
Installation, Commissioning and Servicing36
- Lifting Hazards36
- Electrical Hazards36
- UL/CSA/CUL Requirements37
- Fusing Requirements37
- Equipment Connections38
- Protection Class 1 Equipment Requirements38
- Pre-Energization Checklist39
- Peripheral Circuitry40
- Upgrading/Servicing40
Decommissioning and Disposal41
Chapter 3 Hardware Design43
Chapter Overview45
Hardware Architecture46
- Figure 2: Hardware Architecture46
Mechanical Implementation47
- Housing Variants47
- Figure 3: Exploded View of IED47
- List of Boards48
Front Panel49
- Figure 4: Front Panel (80TE)49
- Top Compartment with Hinged Cover50
- Keypad50
- Liquid Crystal Display50
- Front Serial Port (SK1)50
- Front Parallel Port (SK2)51
- Fixed Function Leds51
- Function Keys52
- Programable Leds52
Rear Panel53
- Figure 5: Rear View of Populated 80TE Case53
- Figure 6: Terminal Block Types54
Boards and Modules55
- Pcbs55
- Subassemblies55
- Figure 7: Rear Connection to Terminal Block55
- Main Processor Board56
- Figure 8: Main Processor Board56
- Combined Coprocessor and Isolated Input Board57
- Figure 9: Combined Coprocessor and Isolated Digital Input Board57
- Power Supply Board58
- Figure 10: Power Supply Board58
- Figure 11: Power Supply Assembly59
- Watchdog60
- Figure 12: Power Supply Terminals60
- Rear Serial Port61
- Figure 13: Watchdog Contact Terminals61
- Input Module - 2 Transformer Boards62
- Figure 14: Rear Serial Port Terminals62
- Figure 15: Input Module - 1 Transformer Board62
- Sigma-Delta Input Module Circuit Description63
- Figure 16: Input Module Schematic63
- Transformer Board65
- Figure 17: Instrument Transformer Board65
- Main Input Board66
- Figure 18: Main Input Board66
- Standard Output Relay Board67
- Figure 19: Output Relay Board - 8 Contacts67
- IRIG-B Board69
- Figure 20: IRIG-B Board69
- Fibre Optic Board70
- Figure 21: Fibre Optic Board70
- Rear Communication Board71
- Figure 22: Rear Communication Board71
- Ethernet Board72
- Figure 23: Ethernet Board72
- Redundant Ethernet Board73
- Figure 24: Redundant Ethernet Board73
Chapter 4 Configuration75
Chapter Overview77
Using the HMI Panel78
- Navigating the HMI Panel79
- Getting Started79
- Figure 25: Menu Navigation79
- Default Display80
- Default Display Navigation81
- Password Entry81
- Figure 26: Default Display Navigation81
- Processing Alarms and Fault Records82
- Menu Structure83
- Changing the Settings84
- Direct Access (the Hotkey Menu)84
- Setting Group Selection85
- Control Inputs85
- Circuit Breaker Control86
- Function Keys86
Configuring the Data Protocols88
- Courier Configuration88
- DNP3 Configuration90
- DNP3 Configurator91
- MODBUS Configuration93
- IEC 61850 Configuration94
- IEC 61850 Configuration Banks95
- IEC 61850 Network Connectivity95
Date and Time Configuration96
- Time Zone Compensation96
- Daylight Saving Time Compensation96
Configuration Settings98
- System Data98
- Date and Time103
- General Configuration104
- Transformer Ratios106
- System Configuration110
- Security Configuration115
Chapter 5 Protection Functions117
Chapter Overview119
Busbar Protection120
- Unit Protection120
- Current Differential Protection Principles120
- Figure 27: Current Differential Protection120
- Through Fault Stability121
- Bias Current Compensation121
- Figure 28: Compensation Using Biased Differential Characteristic122
Busbar Multiple Tripping Criteria123
- Tripping Criteria Ddbs123
- Figure 29: Multiple Tripping Criteria123
- Topology Replica Function124
- Figure 30: Topology Replica Function124
- Topology Replica Function Ddbs125
- Zone Current Differential Elements126
- Check Zone126
- Figure 31: Zone Tripping Characteristic126
- Check Zone Supervision127
- Auxiliary Contacts Discrepancy127
- Continuous Supervision of Current Circuits (Circuitry Fail)127
- Figure 32: Check Zone Supervision Characteristic127
- Current Phase Comparison Check128
- Figure 33: Circuitry Check Characteristic128
- Optional Voltage Criteria129
- Instantaneous or Delayed Tripping129
- Dead Zone (Blind Spot) Protection129
- Dead Zone (Blind Spot) Protection Logic130
- Dead Zone (Blind Spot) Protection Ddbs130
- Figure 34: Example of Busbar Dead-Zone130
- Figure 35: Dead-Zone Logic130
Circuit Breaker Fail Protection131
- Circuit Breaker Fail Implementation131
- Circuit Breaker Fail Logic131
- Figure 36: CBF Initiated by Internal Signal132
- CB Fail Settings133
- Figure 37: CBF Initiated by External Signal133
- CB Fail DDB Signals134
Backup Overcurrent Protection136
- Overcurrent 1 Settings136
- Overcurrent 2 Settings141
- Overcurrent DDB Signals153
Configuring the Busbar Protection157
- Example of Configuring the Busbar Protection157
- Figure 38: Busbar Topology Used in Configuration Example157
Chapter 6 Monitoring and Control161
Chapter Overview163
Event Records164
- Event Records Table164
- Event Types171
- Opto-Input Events172
- Contact Events172
- Alarm Events172
- Fault Record Events175
- Figure 39: Fault Recorder Stop Conditions175
- Maintenance Events176
- Protection Events177
- Security Events177
- Platform Events178
- View Records Column178
Disturbance Recorder181
Measurements182
- Measured Quantities182
- Measured and Calculated Currents182
- Measured and Calculated Voltages182
- Power and Energy Quantities182
- Demand Values183
- Frequency Measurements183
- Other Measurements183
- Measurement Setup183
- Measurement Tables184
- Measurement Table 3187
O Functions188
- Function Keys188
- Function Key DDB Signals188
- Function Key Settings189
- Leds189
- Fixed Function Leds189
- Programable Leds190
- Function Key Leds190
- Trip LED Logic190
- LED DDB Signals190
- Figure 40: Trip LED Logic190
- LED Conditioners192
- Opto-Inputs192
- Opto-Input Configuration192
- Opto-Input Labels195
- Opto-Input DDB Signals197
- Enhanced Time Stamping198
- Output Relays198
- Output Relay Labels198
- Output Relay DDB Signals200
- Output Relay Conditioners200
- Control Inputs200
- Control Input Settings200
- Control Input Configuration202
- Control Input Labels206
- Control Input DDB Signals206
Voltage Transformer Supervision207
Trip Circuit Supervision208
- Trip Circuit Supervision Scheme208
- Figure 41: TCS Scheme 1208
- Psl for Tcs Scheme 1209
- Figure 42: PSL for TCS Scheme 1209
- Figure 43: TCS Scheme 2209
- Psl for Tcs Scheme 2210
- Figure 44: PSL for TCS Scheme 2210
- Figure 45: TCS Scheme 3210
- Figure 46: PSL for TCS Scheme 3210
Chapter 7 SCADA Communications211
Chapter Overview213
Communication Interfaces214
Serial Communication215
- EIA(RS)232 Bus215
- EIA(RS)485 Bus215
- EIA(RS)485 Biasing Requirements216
- K-Bus216
- Figure 47: RS485 Biasing Circuit216
- Figure 48: Remote Communication Using K-Bus217
Standard Ethernet Communication218
Overview of Data Protocols219
Courier220
- Physical Connection and Link Layer220
- Courier Database220
- Settings Categories220
- Setting Changes220
- Settings Transfer221
- Event Extraction221
- Automatic Event Record Extraction221
- Manual Event Record Extraction221
- Disturbance Record Extraction222
- Programmable Scheme Logic Settings223
- Time Synchronisation223
- Configuration223
- Physical Connection and Link Layer224
- Initialisation224
- Iec 60870-5-103224
- Time Synchronisation225
- Spontaneous Events225
- General Interrogation (GI)225
- Cyclic Measurements225
- Commands225
- Test Mode225
- Disturbance Records225
- Command/Monitor Blocking226
- Configuration226
Dnp227
- Physical Connection and Link Layer227
- Object 1 Binary Inputs227
- Object 10 Binary Outputs227
- Object 20 Binary Counters228
- Object 30 Analogue Input228
- Figure 49: Control Input Behaviour228
- Object 40 Analogue Output229
- Object 50 Time Synchronisation229
- Configuration229
Modbus230
- Physical Connection and Link Layer230
- MODBUS Functions230
- Response Codes230
- Register Mapping231
- Event Extraction231
- Automatic Event Record Extraction231
- Manual Event Record Extraction232
- Record Data232
- Disturbance Record Extraction233
- Manual Extraction Procedure234
- Automatic Extraction Procedure235
- Figure 50: Manual Selection of a Disturbance Record235
- Figure 51: Automatic Selection of Disturbance Record - Method 1236
- Extracting the Disturbance Data237
- Figure 52: Automatic Selection of Disturbance Record - Method 2237
- Figure 53: Configuration File Extraction238
- Figure 54: Data File Extraction239
- Setting Changes240
- Password Protection240
- Protection and Disturbance Recorder Settings240
- Time Synchronisation241
- Power and Energy Measurement Data Formats242
Iec 61850243
- Benefits of IEC 61850243
- IEC 61850 Interoperability243
- The IEC 61850 Data Model243
- IEC 61850 in Micom Ieds244
- Figure 55: Data Model Layers in IEC61850244
- IEC 61850 Data Model Implementation245
- IEC 61850 Communication Services Implementation245
- IEC 61850 Peer-To-Peer (GSSE) Communications245
- Mapping GOOSE Messages to Virtual Inputs246
- IEC 61850 GOOSE Configuration246
- Ethernet Functionality246
- Ethernet Disconnection246
- Loss of Power246
- IEC 61850 Configurator Settings246
Read Only Mode249
- IEC 60870-5-103 Protocol249
- Courier Protocol249
- IEC 61850 Protocol250
- Read-Only Settings250
- Read-Only DDB Signals250
Time Synchronisation251
Demodulated IRIG-B252
- IRIG-B Implementation252
- Figure 56: GPS Satellite Timing Signal252
Sntp253
Time Synchronsiation Using the Communication Protocols254
Communication Settings255
Chapter 8 Redundant Ethernet259
Chapter Overview261
Board Versions262
Board Connections263
- Figure 57: Board Connectors263
Redundancy Protocols264
- Parallel Redundancy Protocol (PRP)264
- PRP Networks264
- Network Elements264
- Figure 58: Example PRP Redundant Network265
- Rapid Spanning Tree Protocol (RSTP)266
- Figure 59: Application of PRP at Substation Level266
- Self-Healing Protocol (SHP)267
- Figure 60: IED Attached to Redundant Ethernet Star or Ring Circuit267
- Figure 61: IED, Bay Computer and Ethernet Switch with Self Healing Ring Facilities267
- Figure 62: Internal Architecture of IED, C264 Bay Computer and H36X Ethernet Switch268
- Dual-Homing Protocol (DHP)269
- Figure 63: Redundant Ethernet Ring Architecture with IED, Bay Computer and Ethernet269
- Figure 64: Redundant Ethernet Ring Architecture with IED, Bay Computer and Ethernet269
- Figure 65: Dual Homing Mechanism270
- Figure 66: Application of Dual Homing Star at Substation Level271
Generic Functions for Redundant Ethernet Boards272
- Forwarding272
- Priority Tagging272
- Simple Network Management Protocol (SNMP)272
- SNMP MIB Structure for RSTP, DHP and SHP273
- Figure 67: SNMP MIB Tree273
- SNMP MIB Structure for PRP274
- Simple Network Time Protocol (SNTP)277
Configuring IP Addresses278
- Configuring the IED IP Address278
- Configuring the Board IP Address278
- Figure 68: IED and REB IP Address Configuration278
- Configuring the First Two Octets of the Board IP Address279
- Configuring the Third Octet of the Board IP Address279
- Configuring the Last Octet of the Board IP Address279
PRP Configurator282
- Connecting the IED to a PC282
- Installing the Configurator282
- Figure 69: Connection Using (A) an Ethernet Switch and (B) a Media Converter282
- Starting the Configurator283
- PRP Device Identification283
- PRP IP Address Configuration283
- SNTP IP Address Configuration283
- Check for Connected Equipment283
- PRP Configuration284
- Filtering Database284
- End of Session284
RSTP Configurator285
- Connecting the IED to a PC285
- Installing the Configurator285
- Figure 70: Connection Using (A) an Ethernet Switch and (B) a Media Converter285
- Starting the Configurator286
- RSTP Device Identification286
- RSTP IP Address Configuration286
- SNTP IP Address Configuration286
- Check for Connected Equipment287
- RSTP Configuration287
- Bridge Parameters287
- Port Parameters287
- Port States288
- End of Session288
Switch Manager289
- Installation289
- Setup290
- Network Setup290
- Bandwidth Used290
- Reset Counters290
- Check for Connected Equipment291
- Mirroring Function291
- Ports On/Off291
- Vlan291
- End of Session292
Chapter 9 Cyber-Security293
Overview295
The Need for Cyber-Security296
Standards297
- NERC Compliance297
- Cip 002298
- Cip 007299
- Ieee 1686-2007299
Cyber-Security Implementation301
- NERC-Compliant Display301
- Four-Level Access302
- Figure 71: Default Display Navigation302
- Blank Passwords303
- Password Rules303
- Access Level Ddbs304
- Enhanced Password Security304
- Password Strengthening304
- Password Validation304
- Password Blocking305
- Password Recovery306
- Password Encryption307
- Disabling Physical Ports307
- Disabling Logical Ports307
- Security Events Management308
- Logging out310
Cyber-Security Settings311
Chapter 10 Settings Application Software313
Introduction to the Settings Application Software315
- Getting Started315
- Quick System Guide316
- Figure 72: Flowchart Showing How S1 Agile Can be Used to Set up and Save a Protection System Offline or Online316
- Download Data Models317
- Set up a System317
- Connect to an IED Front Port317
- Connect to an IED in a System317
- Send Settings to a Device317
- Extract Settings from a Device317
- Extract a PSL File from a Device317
- Extract a DNP3 File from a Device318
- Extract an Events File from a Device318
- Extract a Disturbance Record from a Device318
- PSL Editor318
- IEC 61850 Configurator318
- DNP3 Configurator318
- Curve Tool319
- S&R Courier319
- Aedr2319
- Winaedr2319
- Wavewin319
- Device (Menu) Text Editor320
- Event Viewer320
- GOOSE Editor320
- PRP Configurator320
- RSTP Configurator320
- Switch Manager321
Chapter 11 Busbar Commissioning Tool323
P747 Busbar Commissioning Tool (Remote HMI)325
Scheme Editor326
- Connections326
- Manual Connections326
- Automatic Connections326
- Remove Connection327
- Scheme Elements327
- Add Elements to a Scheme327
- Remove an Element327
- Group Elements in a Scheme327
- Rotate Elements in a Group327
- Working with Text on the Scheme327
- Add a Label to an Element328
- Remove a Label from an Element328
- Change an Element's Label328
- Add or Remove Free Text328
- Validate a Scheme328
Protection Data Monitor329
- Connect to the IED329
- Polling Timer329
- Read IED Data329
- Measurements Data329
Chapter 12 Scheme Logic331
Chapter Overview333
Introduction to the Scheme Logic334
- Figure 73: Scheme Logic Interfaces334
Fixed Scheme Logic336
- Any Start Logic337
- Figure 74: any Start Logic337
- VTS Acceleration Indication Logic338
- CB Fail SEF Protection Logic338
- Figure 75: VTS Acceleration Indication Logic338
- Figure 76: CB Fail SEF Protection Logic338
- CB Fail Non Current Protection Logic339
- Composite Earth Fault Start Logic340
- Any Trip Logic340
- SEF any Start Logic340
- Figure 78: Composite Earth Fault Start Logic340
- Figure 79: any Trip Logic340
- Figure 80: SEF any Start Logic340
Programmable Scheme Logic341
- Viewing and Printing PSL Diagrams341
- Trip Output Mappings342
- Figure 81: Trip Output Mappings342
- Opto-Input Mappings343
- Figure 82: Opto-Input Mappings343
- Output Relay Mappings344
- Figure 83: Output Relay Mappings344
- LED Mappings345
- Control Input Mappings345
- Function Key Mappings345
- Figure 84: LED Mappings345
- Figure 85: Control Input Mappings345
- Figure 86: Function Key Mappings345
- Circuit Breaker Mapping346
- Fault Record Trigger Mapping346
- Check Synchronisation and Voltage Monitor Mappings346
- Settings346
- Figure 87: Circuit Breaker Mapping346
- Figure 88: Fault Record Trigger Mapping346
- Figure 89: Check Synchronisation and Voltage Monitor Mappings346
Chapter 13 Installation349
Chapter Overview351
Handling the Goods352
- Receipt of the Goods352
- Unpacking the Goods352
- Storing the Goods352
- Dismantling the Goods352
Mounting the Device353
- Flush Panel Mounting353
- Figure 90: Location of Battery Isolation Strip353
- Rack Mounting354
- Figure 91: Rack Mounting of Products355
Cables and Connectors356
- Terminal Blocks356
- Figure 92: Terminal Block Types356
- Power Supply Connections357
- Earth Connnection357
- Current Transformers357
- Voltage Transformer Connections358
- Watchdog Connections358
- EIA(RS)485 and K-Bus Connections358
- IRIG-B Connection358
- Opto-Input Connections358
- Output Relay Connections358
- Ethernet Metallic Connections359
- Ethernet Fibre Connections359
- RS232 Connection359
- Download/Monitor Port359
- GPS Fibre Connection359
- Fibre Communication Connections359
Case Dimensions360
- Case Dimensions 80TE360
- Figure 93: 80TE Case Dimensions360
Chapter 14 Commissioning Instructions361
Chapter Overview363
General Guidelines364
Commissioning Test Menu365
- Opto I/P Status Cell (Opto-Input Status)365
- Relay O/P Status Cell (Relay Output Status)365
- Test Mode Cell365
- Test Pattern Cell366
- Contact Test Cell366
- Test Leds Cell366
- Red and Green LED Status Cells366
- PSL Verificiation366
- Test Port Status Cell366
- Monitor Bit 1 to 8 Cells366
- Using a Monitor Port Test Box367
Commissioning Equipment368
- Minimum Equipment Required368
- Optional Equipment Required368
Product Checks369
- Product Checks with the IED De-Energised369
- Visual Inspection370
- Current Transformer Shorting Contacts370
- Insulation370
- External Wiring371
- Watchdog Contacts371
- Power Supply371
- Product Checks with the IED Energised371
- Watchdog Contacts372
- Test LCD372
- Date and Time372
- Test Leds373
- Test Alarm and Out-Of-Service Leds373
- Test Trip LED373
- Test User-Programmable Leds373
- Test Opto-Inputs373
- Test Output Relays374
- Test Serial Communication Port RP1374
- Figure 94: RP1 Physical Connection375
- Figure 95: Remote Communication Using K-Bus375
- Test Serial Communication Port RP2376
- Test Ethernet Communication376
- Test Current Inputs376
- Test Voltage Inputs377
Setting Checks378
- Apply Application-Specific Settings378
- Transferring Settings from a Settings File378
- Entering Settings Using the HMI378
Busbar Protection Checks380
- Busbar Differential Protection Checks380
- Connecting the Test Circuit380
- Performing the Test380
- Check the Operating Time381
Onload Checks382
- Confirm Current Connections382
- Confirm Voltage Connections382
- On-Load Busbar Differential Test383
Final Checks384
Commissioning Test Settings385
Chapter 15 Maintenance and Troubleshooting387
Chapter Overview389
Maintenance390
- Maintenance Checks390
- Alarms390
- Opto-Isolators390
- Output Relays390
- Measurement Accuracy390
- Replacing the Device391
- Repairing the Device392
- Figure 96: Possible Terminal Block Types392
- Removing the Front Panel393
- Replacing Pcbs393
- Replacing the Main Processor Board394
- Replacement of Communications Boards394
- Figure 97: Front Panel Assembly394
- Replacement of the Input Module395
- Replacement of the Power Supply Board396
- Replacement of the I/O Boards396
- Recalibration396
- Changing the Battery397
- Post Modification Tests397
- Battery Disposal397
- Cleaning397
Troubleshooting398
- Self-Diagnostic Software398
- Power-Up Errors398
- Error Message or Code on Power-Up398
- Out of Service LED on at Power-Up399
- Error Code During Operation400
- Backup Battery400
- Mal-Operation During Testing400
- Failure of Output Contacts400
- Failure of Opto-Inputs400
- Incorrect Analogue Signals401
- PSL Editor Troubleshooting401
- Diagram Reconstruction401
- PSL Version Check401
Repair and Modification Procedure402
Chapter 16 Technical Specifications403
Chapter Overview405
Interfaces406
- Front Serial Port406
- Download/Monitor Port406
- Rear Serial Port406
- Fibre Rear Serial Port406
- Redundant Ethernet Ports407
- IRIG-B (Demodulated)407
- IRIG-B (Modulated)407
- Rear Serial Port 2407
- Rear Ethernet Port Copper408
- Rear Ethernet Port Fibre408
- 100 Base Fx Receiver Characteristics408
- 100 Base Fx Transmitter Characteristics409
Busbar Protection Functions410
- Busbar Circuitry Fault Protection410
- Busbar Dead Zone Protection410
- Three-Phase Overcurrent Protection410
- Earth Fault Protection411
- Transient Overreach and Overshoot411
Performance of Monitoring and Control Functions412
- Voltage Transformer Supervision412
- PSL Timers412
Measurements and Recording413
- General413
- Disturbance Records413
- Event, Fault and Maintenance Records413
- Fault Locator413
Standards Compliance414
- EMC Compliance: 2004/108/EC414
- Product Safety: 2006/95/EC414
- R&TTE Compliance414
- UL/CUL Compliance414
Mechanical Specifications415
- Physical Parameters415
- Enclosure Protection415
- Mechanical Robustness415
- Transit Packaging Performance415
Ratings416
- AC Measuring Inputs416
- Current Transformer Inputs416
- Voltage Transformer Inputs416
- Auxiliary Supply Voltage416
- Nominal Burden417
- Power Supply Interruption417
- Standard Output Contacts418
- Watchdog Contacts418
- Isolated Digital Inputs419
- Nominal Pickup and Reset Thresholds419
Environmental Conditions420
- Ambient Temperature Range420
- Ambient Humidity Range420
- Corrosive Environments420
Type Tests421
- Insulation421
- Creepage Distances and Clearances421
- High Voltage (Dielectric) Withstand421
- Impulse Voltage Withstand Test421
Electromagnetic Compatibility422
- Mhz Burst High Frequency Disturbance Test422
- Damped Oscillatory Test422
- Immunity to Electrostatic Discharge422
- Electrical Fast Transient or Burst Requirements422
- Surge Withstand Capability422
- Surge Immunity Test423
- Immunity to Radiated Electromagnetic Energy423
- Radiated Immunity from Digital Communications423
- Radiated Immunity from Digital Radio Telephones423
- Immunity to Conducted Disturbances Induced by Radio Frequency Fields423
- Magnetic Field Immunity424
- Conducted Emissions424
- Radiated Emissions424
- Power Frequency424
Appendix A Symbols and Glossary425
Chapter Overview427
Acronyms and Abbreviations428
Units for Digital Communications434
American Vs British English Terminology435
Logic Symbols and Terms436
Logic Timers440
Logic Gates442
- Figure 98: Logic Gates442
Appendix B Commissioning Record443
Test Record445
- Engineer Details445
- Front Plate Information445
- Test Equipment445
- Tests with Product De-Energised445
- Tests with Product Energised446
- Communication Tests446
- Current Input Tests446
- Voltage Input Tests447
- Overcurrent Checks447
- On-Load Checks447
- Final Checks447
Appendix C Wiring Diagrams449
Appendix Overview451
P747: Busbar Protection452
- Figure 99: P747 Busbar Protection, 3 Box Solution452
P747: I/O Option a453
- Figure 100: P747 Busbar Protection with 40 Inputs, 24 Outputs and Coprocessor453
P747: I/O Option B454
- Figure 101: P747 Busbar Protection with 32 Inputs, 32 Outputs and Coprocessor454
P747: I/O Option C455
- Figure 102: P747 Busbar Protection with 32 Inputs, 24 Outputs and Standard Coprocessor455

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