Phase protection relay PCS-9656

currentphase sequencearc flash

Overview
The PCS-9656 Arc Flash Relay delivers fast busbar and switchgear arc protection for substations, power plants and industrial sites. Arc sensors detect optical signals from arc faults and transmit them optically to the relay for reliable fault clearance and personnel/equipment protection.

Functionality
PCS-9656 acquires incoming line currents and localized arc flash signals via arc sensors to discriminate arc faults. The unit integrates protection calculations, tripping outputs, event recording and operator interface. Up to 12 current inputs can be integrated in a single unit. Optical signal transmission between sensors and relay reduces electromagnetic interference and improves reliability. The device can be mounted in a protection panel or local switchgear.

Protections

• Arc protection
• Breaker failure protection for up to 6 breakers (50BF)

Monitoring

• Arc intensity supervision
• CT (current transformer) failure supervision
• Transfer/receive module supervision
• Self-diagnostic

Measurement

• Phase currents: Ia, Ib, Ic
• Sequence currents: positive/negative/zero (I1, I2, I0)
• Phase angles: Ia^Ib, Ib^Ic, Ic^Ia

Recording & Logs

• 64 trip reports
• 1024 self-diagnostic reports
• 1024 logging reports
• 1024 SOE (sequence of events)
• 64 fault records with oscillograms (COMTRADE compatible)

Communication & Interfaces

• Up to 4 Ethernet ports for automation (optional)
• Two RS-485 serial ports
• One RJ-45 faceplate port for commissioning
• Protocols: IEC 61850-8-1 MMS, IEC 60870-5-103, DNP 3.0

Technical specifications

• Model: PCS-9656 Arc Flash Relay
• Supports up to 12 current inputs integrated in one unit
• Acquires line currents and localized arc flash signals via arc sensors
• Optic-electric conversion for sensor-to-relay transmission to avoid electromagnetic interference
• Integrated functions: protection calculation, tripping outputs, event recording, operator interface
• Installation: protection panel or local switchgear
• Breaker failure protection: up to 6 breakers (50BF)
• Measurements: phase currents (Ia, Ib, Ic), sequence currents (I1, I2, I0), phase angles (Ia^Ib, Ib^Ic, Ic^Ia)
• Storage: 64 trip reports, 1024 self-diagnostic reports, 1024 logging reports, 1024 SOE, 64 COMTRADE-compatible fault records with oscillograms
• Communications: up to 4 Ethernet ports (optional), 2 RS-485 ports, 1 commissioning RJ-45 faceplate
• Protocol compliance: IEC 61850-8-1 MMS, IEC 60870-5-103, DNP 3.0