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PCS-915ID Distributed Busbar Relay
  • The PCS-915ID distributed busbar protection is used for protecting and monitoring various busbar arrangement with all voltage levels, including single busbar with/without section, double busbar with/without sections, double busbar with transfer bus, breaker-and-a-half arrangement and ring-breaker arrangement. It adopts distributed structure, consisting of one Central Unit (CU) and a number of Bay Units (BUs). The Central Unit is linked to up to 32 Bay Units via optical fibers in point-to- point communication mode. The Central Unit is responsible for the protection calculation and relay management, the Bay Unit acquires and transmits the analog and binary data and executes the trip/close commands issued by Central Unit.

    The device provides fast and secure low impedance busbar protection with sub-cycle tripping time. It integrates advanced and patented features to improve its sensitivity and security, such as innovative DPFC current differential protection and unique weighted CT saturation detection method.

    The PCS-915ID is compatible with IEC 61850 station bus and process bus applications. It supports IEC 61850-8-1 MMS, GOOSE and IEC 61850-9-2 Sampling Value. The RJ-45 faceplate port is provided for testing and setting, allowing for easier commissioning and maintenance.

  • Protection and Control Monitoring and Metering Communcation User Interfere
    • Busbar current differential protection (87B)

    Phase current differential protection

    Percentage restraint DPFC differential protection

    • DPFC differential protection

    Voltage control element

    Detection of CT saturation

    Check zone and discrimination zone

    • Bus coupler/section protection

    Breaker failure protection (50BF)

    Dead zone protection (50DZ)

    Pole disagreement protection (62PD)

    Switch-onto-fault protection (50SOTF)

    Overcurrent protection (50/51)

    • Feeder protection

    Breaker failure protection (50BF)

    Dead zone protection (50DZ)

    Pole disagreement protection (62PD)

    Overcurrent protection (50/51)

    Voltage and current drift auto adjustment

    • Dynamic busbar replica

    • CT failure supervision

    • VT failure supervision

    • Self diagnostic

    • Event recorder including 1024 change-of-binary-input events, 1024 supervision events and 1024 device logs

    • Disturbance recorder including 32 disturbance records with waveforms (The format is compatible with COMTRADE.)

    • Clock synchronization using IRIG-B, SNTP, PPS (Pulse-Per- Second) and PPM (Pulse-Per-Minute)

    • Up to 32 optical point-to-point communication ports from Central Unit to Bay Units

    • Up to four 10Base-T/100Base-TX copper Ethernet ports using IEC 61850, DNP3.0 or IEC 60870-5-103 over TCP/IP

    • Up to two 100Base-FX optical Ethernet ports using IEC 61850, DNP3.0 or IEC 60870-5-103 over TCP/IP ( Sharing two copper Ethernet ports)

    • Two RS-485 serial ports using IEC 60870-5-103

    • One RS-485 serial port for clock synchronization

    • Optional Sampling value and GOOSE communication module with 32 optical Ethernet ports using IEC 61850-9-2 and IEC 61850-8-1 GOOSE

    • HMI interface with large-size LCD and 9-button keypad on the front panel

    • One front RJ-45 port for testing and setting

    • One RS-232 or RS-485 rear port for printer

    • Language selection – English + selected language

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