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PCS-9691 Management Relay
The PCS-9691 relay is a protection, control and monitoring unit for various applications (such as overhead line, underground cable, transformer and capacitor etc.) on solidly grounded, impedance grounded, Peterson coil grounded and ungrounded system. The PCS-9691 features a high performance functional library, programmable logic, configurable I/O and integrated frequency-tracking.
The PCS-9691 is designed based on advanced multiprocessor platform, fully complying with IEC 61850 station bus, supporting IEC 61850-8-1 MMS.
- Protection Control Monitoring Communcation
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Six-stage phase overcurrent protection(50/51P)
Four-stage directional phase overcurrent protection (67P)
Six-stage neutral/ground overcurrent protection(50/51N, 50/51G)
Four-stage directional neutral/ground overcurrent protection(67N/G)
Two-stage negative-sequence overcurrent protection (46)
Thermal overload protection for alarm/trip (49)
Broken conduct detection (46BC)
Breaker failure element (50BF)
Dead zone protection (50DZ)
Undercurrent protection (37)
Restricted earth fault protection (64REF)
Two-stage phase-ground or phase-phase undervoltage protection (27)
Two-stage phase-ground or phase-phase overvoltage protection (59)
Two-stage ground overvoltage protection (59G)
One-stage negative sequence overvoltage protection (47)
Four-stage under-frequency protection (81U)
Over-frequency protection (81O)
Frequency rate-of-change protection (81R)
Directional power protection (32)
Four-shot three-pole auto-reclosing (79)
Synchronism check for manual closing and auto- reclosing (25)
Switch onto fault logic (SOTF)
Cold load pickup logic (CLP)
Mechanical protection (MR)
Fault location (FL)
Voltage and current drift auto adjustment
Remote/Local control
Lock/unlock logic
Face plate control button
Tripping circuit supervision (TCS)
Voltage transformer supervision (VTS)
Current transformer supervision (CTS)
Circuit breaker status monitoring
Self supervision
Up to two 100Base-FX ports with IEC 61850-8-1 MMS for non-time-critical message, IEC 60870-5-103 over TCP/IP or DNP 3.0
One RS-485 rear port with IEC 60870-5-103 or Modbus
One RS-485 rear port for clock synchronization
1 faceplate RJ45 port for testing and setting
Clock synchronization via pulse per second, IRIG-B and SNTP