V01229
&
1
Pole Dead A
Pole Dead B
Pole Dead C
Any Pole Dead
All Poles Dead
&
&
VTS Slow Block
1
1
1
&
IA
Hardcoded threshold
VA
Hardcoded threshold
IB
Hardcoded threshold
VB
Hardcoded threshold
IC
Hardcoded threshold
VC
Hardcoded threshold
&
CB1 Closed
&
CB1 Closed
CB2 Closed
HV
&
CB3 Closed
&
CB3 Closed
CB2 Closed
LV
&
CB5 Closed
&
CB5 Closed
CB4 Closed
&
CB2 Closed
&
CB3 Closed
CB2 Closed
TV
&
CB3 Closed
&
CB4 Closed
CB3 Closed
P643: 001
P645: 00001
Terminal
Selection
P643: 011
P645: 00011
3Ph CB_Open
3Ph_CB_Open
3Ph CB Open
3Ph CB Open
3Ph CB Open
3Ph CB Open
3Ph CB Open
3Ph CB Open
3Ph CB Open
3Ph CB Open
3Ph CB Open
Terminal
Selection
P643: 100
P643: 110
P645: 10000
P645: 11000
Terminal
Selection
P643: 010
P645: 00110
P645: 00100
P645: 01100
Figure 129: Pole Dead logic - P643 and P645
If both the line current and voltage fall below a certain threshold the device will initiate a Pole Dead condition. The
undervoltage (V<) and undercurrent (I<) thresholds are hardcoded internally.
If one or more poles are dead, the device will indicate which phase is dead and will also assert the Any Pole Dead
DDB signal. If all phases are dead the Any Pole Dead signal would be accompanied by the All Poles Dead signal.
If the VT fails, a VTS Slow Block signal is taken from the VTS logic to block the Pole Dead indications that would be
generated by the undervoltage and undercurrent thresholds. However, the VTS logic will not block the Pole Dead
indications if they are initiated by a CBx Closed signal. A CBx closed signal is inverted and automatically initiates a
Pole Dead condition regardless of the current and voltage measurement.
6.3
CB STATUS INDICATION
The Pole Dead logic needs a way of initiating the Pole Dead indications for a 3-phase CB Open condition, which
bypasses the VTS blocking. This is normally achieved with a CB State Monitoring function. However, the P64x does
not contain a dedicated CB state monitoring function, so it needs a mechanism by which to achieve this. To do
this, we produce an internal DDB signal (3 ph CB Open), by looking at the status of the CB auxiliary contacts of the
windings to which the voltage transformers are connected. Each terminal (T1 to T5) has an external CBx Closed
DDB signal associated with it, which are connected to the CB auxiliary contacts if available. The internal 3ph CB
Chapter 13 - Monitoring and Control
P64x
280
P64x-TM-EN-1.3
Summary of Contents for P642
Page 2: ......
Page 18: ...Contents P64x xvi P64x TM EN 1 3 ...
Page 24: ...Table of Figures P64x xxii P64x TM EN 1 3 ...
Page 25: ...CHAPTER 1 INTRODUCTION ...
Page 26: ...Chapter 1 Introduction P64x 2 P64x TM EN 1 3 ...
Page 36: ...Chapter 1 Introduction P64x 12 P64x TM EN 1 3 ...
Page 37: ...CHAPTER 2 SAFETY INFORMATION ...
Page 38: ...Chapter 2 Safety Information P64x 14 P64x TM EN 1 3 ...
Page 50: ...Chapter 2 Safety Information P64x 26 P64x TM EN 1 3 ...
Page 51: ...CHAPTER 3 HARDWARE DESIGN ...
Page 52: ...Chapter 3 Hardware Design P64x 28 P64x TM EN 1 3 ...
Page 87: ...CHAPTER 4 SOFTWARE DESIGN ...
Page 88: ...Chapter 4 Software Design P64x 64 P64x TM EN 1 3 ...
Page 98: ...Chapter 4 Software Design P64x 74 P64x TM EN 1 3 ...
Page 99: ...CHAPTER 5 CONFIGURATION ...
Page 100: ...Chapter 5 Configuration P64x 76 P64x TM EN 1 3 ...
Page 121: ...CHAPTER 6 TRANSFORMER DIFFERENTIAL PROTECTION ...
Page 122: ...Chapter 6 Transformer Differential Protection P64x 98 P64x TM EN 1 3 ...
Page 165: ...CHAPTER 7 TRANSFORMER CONDITION MONITORING ...
Page 166: ...Chapter 7 Transformer Condition Monitoring P64x 142 P64x TM EN 1 3 ...
Page 189: ...CHAPTER 8 RESTRICTED EARTH FAULT PROTECTION ...
Page 190: ...Chapter 8 Restricted Earth Fault Protection P64x 166 P64x TM EN 1 3 ...
Page 215: ...CHAPTER 9 CURRENT PROTECTION FUNCTIONS ...
Page 216: ...Chapter 9 Current Protection Functions P64x 192 P64x TM EN 1 3 ...
Page 249: ...CHAPTER 10 CB FAIL PROTECTION ...
Page 250: ...Chapter 10 CB Fail Protection P64x 226 P64x TM EN 1 3 ...
Page 259: ...CHAPTER 11 VOLTAGE PROTECTION FUNCTIONS ...
Page 260: ...Chapter 11 Voltage Protection Functions P64x 236 P64x TM EN 1 3 ...
Page 274: ...Chapter 11 Voltage Protection Functions P64x 250 P64x TM EN 1 3 ...
Page 275: ...CHAPTER 12 FREQUENCY PROTECTION FUNCTIONS ...
Page 276: ...Chapter 12 Frequency Protection Functions P64x 252 P64x TM EN 1 3 ...
Page 286: ...Chapter 12 Frequency Protection Functions P64x 262 P64x TM EN 1 3 ...
Page 287: ...CHAPTER 13 MONITORING AND CONTROL ...
Page 288: ...Chapter 13 Monitoring and Control P64x 264 P64x TM EN 1 3 ...
Page 306: ...Chapter 13 Monitoring and Control P64x 282 P64x TM EN 1 3 ...
Page 307: ...CHAPTER 14 SUPERVISION ...
Page 308: ...Chapter 14 Supervision P64x 284 P64x TM EN 1 3 ...
Page 322: ...Chapter 14 Supervision P64x 298 P64x TM EN 1 3 ...
Page 323: ...CHAPTER 15 DIGITAL I O AND PSL CONFIGURATION ...
Page 324: ...Chapter 15 Digital I O and PSL Configuration P64x 300 P64x TM EN 1 3 ...
Page 336: ...Chapter 15 Digital I O and PSL Configuration P64x 312 P64x TM EN 1 3 ...
Page 337: ...CHAPTER 16 COMMUNICATIONS ...
Page 338: ...Chapter 16 Communications P64x 314 P64x TM EN 1 3 ...
Page 397: ...CHAPTER 17 CYBER SECURITY ...
Page 398: ...Chapter 17 Cyber Security P64x 374 P64x TM EN 1 3 ...
Page 415: ...CHAPTER 18 INSTALLATION ...
Page 416: ...Chapter 18 Installation P64x 392 P64x TM EN 1 3 ...
Page 431: ...CHAPTER 19 COMMISSIONING INSTRUCTIONS ...
Page 432: ...Chapter 19 Commissioning Instructions P64x 408 P64x TM EN 1 3 ...
Page 460: ...Chapter 19 Commissioning Instructions P64x 436 P64x TM EN 1 3 ...
Page 461: ...CHAPTER 20 MAINTENANCE AND TROUBLESHOOTING ...
Page 462: ...Chapter 20 Maintenance and Troubleshooting P64x 438 P64x TM EN 1 3 ...
Page 477: ...CHAPTER 21 TECHNICAL SPECIFICATIONS ...
Page 478: ...Chapter 21 Technical Specifications P64x 454 P64x TM EN 1 3 ...
Page 507: ...APPENDIX A ORDERING OPTIONS ...
Page 508: ...Appendix A Ordering Options P64x P64x TM EN 1 3 ...
Page 512: ...Appendix A Ordering Options P64x A4 P64x TM EN 1 3 ...
Page 513: ...APPENDIX B SETTINGS AND SIGNALS ...
Page 515: ...APPENDIX C WIRING DIAGRAMS ...
Page 516: ...Appendix C Wiring Diagrams P64x P64x TM EN 1 3 ...
Page 590: ......
Page 591: ......