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PCS-974 Mechanical Relay
  • PCS-974 is a dedicated auxiliary relay for transformer nonelectrical protection. This IED provides sixteen high-powerpickup binary inputs for mechanical element monitoring, alarming and tripping. The high-power-pickup design reduces the risk of Electro-Magnetic Interference (EMI) in order to improve reliability. Generally, mechanical relays include winding temperature relays, oil temperature relays and buchholz relays. The relay can be used for transformer and generator protection.

    The PCS-974 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 in effort to make commissioning and maintenance easier.

  • Protection and Control Communcation User Interfere
    • Up to sixteen channels of mechanical protection (26: oil and winding temperature; 63: gas, pressure; 71: oil level; etc

    • Self diagnostic

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

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

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

    • ŸUp 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)

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

    • ŸOne RS-485 serial port for clock synchronization

    • ŸHMI 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

    • ŸLanguage selection – English + selected language

    • ŸAssistant software - PCS-Explorer

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