7.1.1
PSL FOR TCS SCHEME 1
Opto-input
V01217
Key:
External DDB Signal
Time Delay
&
Inverter
&
NC Output Relay
LED
User Alarm
pickup
0
50
0
400
dropoff
straight
0
0
Latching
Figure 42: PSL for TCS Scheme 1
The opto-input can be used to drive a Normally Closed Output Relay, which in turn can be used to drive
alarm equipment. The signal can also be inverted to drive a latching programmable LED and a user alarm
DDB signal.
The DDO timer operates as soon as the opto-input is energised, but will take 400 ms to drop off/reset in the
event of a trip circuit failure. The 400 ms delay prevents a false alarm due to voltage dips caused by faults in
other circuits or during normal tripping operation when the opto-input is shorted by a self-reset trip contact.
When the timer is operated the NC (normally closed) output relay opens and the LED and user alarms are
reset.
The 50 ms delay on pick-up timer prevents false LED and user alarm indications during the power up time,
following a voltage supply interruption.
7.2
TRIP CIRCUIT SUPERVISION SCHEME 2
Much like TCS scheme 1, this scheme provides supervision of the trip coil with the breaker open or closed
but does not provide pre-closing supervision of the trip path. However, using two opto-inputs allows the IED
to correctly monitor the circuit breaker status since they are connected in series with the CB auxiliary
contacts. This is achieved by assigning Opto-input 1 to the 52a contact and Opto-input 2 to the 52b contact.
Provided the
Circuit Breaker Status
setting in the
CB CONTROL
column is set to
52a and 52b
, the IED
will correctly monitor the status of the breaker. This scheme is also fully compatible with latched contacts as
the supervision current will be maintained through the 52b contact when the trip contact is closed.
V01215
52A
52B
R1
Trip Output Relay
+ve
-ve
Opto-input 1
R2
Opto-input 2
Circuit Breaker
Trip path
Trip coil
Figure 43: TCS Scheme 2
When the breaker is closed, supervision current passes through opto input 1 and the trip coil. When the
breaker is open current flows through opto input 2 and the trip coil. As with scheme 1, no supervision of the
trip path is provided whilst the breaker is open. Any fault in the trip path will only be detected on CB closing,
after a 400 ms delay.
MiCOM P747
Chapter 6 - Monitoring and Control
P747-TM-EN-1
189
P747-TM-EN-1.1
Содержание MiCOM P747 Agile
Страница 2: ......
Страница 16: ...Contents MiCOM P747 xiv P747 TM EN 1 P747 TM EN 1 1...
Страница 20: ...Table of Figures MiCOM P747 xviii P747 TM EN 1 P747 TM EN 1 1...
Страница 21: ...INTRODUCTION CHAPTER 1...
Страница 22: ...Chapter 1 Introduction MiCOM P747 2 P747 TM EN 1 P747 TM EN 1 1...
Страница 31: ...SAFETY INFORMATION CHAPTER 2...
Страница 32: ...Chapter 2 Safety Information MiCOM P747 12 P747 TM EN 1 P747 TM EN 1 1...
Страница 42: ...Chapter 2 Safety Information MiCOM P747 22 P747 TM EN 1 P747 TM EN 1 1...
Страница 43: ...HARDWARE DESIGN CHAPTER 3...
Страница 44: ...Chapter 3 Hardware Design MiCOM P747 24 P747 TM EN 1 P747 TM EN 1 1...
Страница 74: ...Chapter 3 Hardware Design MiCOM P747 54 P747 TM EN 1 P747 TM EN 1 1...
Страница 75: ...CONFIGURATION CHAPTER 4...
Страница 76: ...Chapter 4 Configuration MiCOM P747 56 P747 TM EN 1 P747 TM EN 1 1...
Страница 117: ...PROTECTION FUNCTIONS CHAPTER 5...
Страница 118: ...Chapter 5 Protection Functions MiCOM P747 98 P747 TM EN 1 P747 TM EN 1 1...
Страница 160: ...Chapter 5 Protection Functions MiCOM P747 140 P747 TM EN 1 P747 TM EN 1 1...
Страница 161: ...MONITORING AND CONTROL CHAPTER 6...
Страница 162: ...Chapter 6 Monitoring and Control MiCOM P747 142 P747 TM EN 1 P747 TM EN 1 1...
Страница 211: ...SCADA COMMUNICATIONS CHAPTER 7...
Страница 212: ...Chapter 7 SCADA Communications MiCOM P747 192 P747 TM EN 1 P747 TM EN 1 1...
Страница 259: ...REDUNDANT ETHERNET CHAPTER 8...
Страница 260: ...Chapter 8 Redundant Ethernet MiCOM P747 240 P747 TM EN 1 P747 TM EN 1 1...
Страница 293: ...CYBER SECURITY CHAPTER 9...
Страница 294: ...Chapter 9 Cyber Security MiCOM P747 274 P747 TM EN 1 P747 TM EN 1 1...
Страница 313: ...SETTINGS APPLICATION SOFTWARE CHAPTER 10...
Страница 314: ...Chapter 10 Settings Application Software MiCOM P747 294 P747 TM EN 1 P747 TM EN 1 1...
Страница 322: ...Chapter 10 Settings Application Software MiCOM P747 302 P747 TM EN 1 P747 TM EN 1 1...
Страница 323: ...BUSBAR COMMISSIONING TOOL CHAPTER 11...
Страница 324: ...Chapter 11 Busbar Commissioning Tool MiCOM P747 304 P747 TM EN 1 P747 TM EN 1 1...
Страница 330: ...Chapter 11 Busbar Commissioning Tool MiCOM P747 310 P747 TM EN 1 P747 TM EN 1 1...
Страница 331: ...SCHEME LOGIC CHAPTER 12...
Страница 332: ...Chapter 12 Scheme Logic MiCOM P747 312 P747 TM EN 1 P747 TM EN 1 1...
Страница 348: ...Chapter 12 Scheme Logic MiCOM P747 328 P747 TM EN 1 P747 TM EN 1 1...
Страница 349: ...INSTALLATION CHAPTER 13...
Страница 350: ...Chapter 13 Installation MiCOM P747 330 P747 TM EN 1 P747 TM EN 1 1...
Страница 361: ...COMMISSIONING INSTRUCTIONS CHAPTER 14...
Страница 362: ...Chapter 14 Commissioning Instructions MiCOM P747 342 P747 TM EN 1 P747 TM EN 1 1...
Страница 387: ...MAINTENANCE AND TROUBLESHOOTING CHAPTER 15...
Страница 388: ...Chapter 15 Maintenance and Troubleshooting MiCOM P747 368 P747 TM EN 1 P747 TM EN 1 1...
Страница 403: ...TECHNICAL SPECIFICATIONS CHAPTER 16...
Страница 404: ...Chapter 16 Technical Specifications MiCOM P747 384 P747 TM EN 1 P747 TM EN 1 1...
Страница 425: ...SYMBOLS AND GLOSSARY APPENDIX A...
Страница 426: ...Appendix A Symbols and Glossary MiCOM P747 406 P747 TM EN 1 P747 TM EN 1 1...
Страница 443: ...COMMISSIONING RECORD APPENDIX B...
Страница 444: ...Appendix B Commissioning Record MiCOM P747 424 P747 TM EN 1 P747 TM EN 1 1...
Страница 448: ...Final Checks Result LEDs reset Yes No Appendix B Commissioning Record MiCOM P747 428 P747 TM EN 1 P747 TM EN 1 1...
Страница 449: ...WIRING DIAGRAMS APPENDIX C...
Страница 450: ...Appendix C Wiring Diagrams MiCOM P747 430 P747 TM EN 1 P747 TM EN 1 1...
Страница 456: ...Appendix C Wiring Diagrams MiCOM P747 436 P747 TM EN 1 P747 TM EN 1 1...
Страница 457: ......