The asynchronous motor protection device is suitable for the protection of medium and high voltage motors with a voltage level of 3-10kV, and can reliably protect and control various large and medium-sized asynchronous motors. It can be installed in small ring network cabinets such as solid cabinets and inflatable cabinets.

Technical indicators

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

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

◆ Working frequency: 50HZ;

◆ Working power supply: AC/DC85-265V;

◆ Power supply: internal 24V;

◆ Current measurement accuracy: 0.5 level;

◆ Voltage measurement accuracy: 0.5 level;

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

◆ Switch-on node: Continuously connect AC/DC220V, 5A current (pure resistive load).

Measurement and control function

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

◆ Remote signal quantity: The device has 8 remote signal input quantities;

◆ Event record: The device can record 64 events including input position change, device self-check, 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 remotely call and modify the protection setting through the remote background.

Protection function

◆ Short circuit protection

◆ Protection against long startup time

◆ Two-stage time-limited overcurrent protection

◆ Two-stage negative sequence overcurrent protection

◆ Inverse time overcurrent protection

◆ Overheat protection

◆ Overvoltage protection

◆ Low voltage protection

◆ Zero sequence overcurrent protection

◆ Zero sequence overvoltage protection

◆ Self-start function

◆ PT disconnection monitoring

Communication Function

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

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

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