The capacitor protection device is suitable for the comprehensive protection, measurement and control of single Y, double Y, △ connection parallel capacitor groups installed in ungrounded systems and resistance grounding systems with voltage levels of 35kV and below. It can be installed in small ring network cabinets such as solid cabinets, inflatable cabinets or box transformers.

Technical indicators

◆ AC rated current: 5A or 1A (please specify when ordering);

◆ AC rated voltage: 57.7V or 100V (please specify when ordering);

◆ Operating frequency: 50HZ;

◆ Working power supply: AC/DC85-265V;

◆ Input power supply: internal 24V;

◆ Current measurement accuracy: 0.5 level;

◆ Voltage measurement accuracy: 0.5 level;

◆ Protection action export time: 1.5 times the fixed value protection action time is not more than 35ms;

◆ Output node: continuously connected to AC/DC220V, 5A current (pure resistive load).

Measurement and control function

◆ Telemetering: voltage, current, active power, reactive power, power factor, etc., can be set to display primary or secondary values;

◆ Telesignaling: The device has 8-way telesignaling inputs;

◆ Event record: The device can record 64 events including input position change, device self-test, protection action, etc., which will not be lost in case of power failure;

◆ Remote control: The device can remotely open and close the switch and call and modify the protection setting remotely through the remote background.

Protection function

◆ Two-stage phase overcurrent protection

◆ Zero-sequence overcurrent protection

◆ Unbalanced zero-sequence overcurrent protection

◆ Zero-sequence overvoltage protection

◆ Unbalanced zero-sequence overvoltage protection

◆ Overvoltage protection

◆ Loss of voltage protection

◆ PT disconnection monitoring

Communication function

◆ You can choose the magnetically isolated high-speed standard RS485 interface or the magnetically isolated high-speed standard CAN2.0B interface (choose one of the two, please specify when ordering);

◆ The RS485 interface communication protocol is IEC 60870-103 communication protocol;

◆ The CAN2.0B interface communication protocol is IEC 60870-104 protocol.