Under-voltage control relay WDH-31-210

over-voltagecurrentphase sequence

The motor protection controller can replace the electrical components such as thermal relays, time relays, transmitters, etc., simplifying the traditional motor control protection mode, and its protection range is wider, the precision action is more accurate and reliable, and the troubleshooting is more intuitive when the fault occurs, which can help the customer quickly. Determine the cause of the failure and reduce economic losses Motor protection controller WDH-31-210 serves for the protection and control for low-voltage AC asynchronous motor, provides various control modes and protection functions, rich on-off quantity input and relay output programming functions, and can meet different requirements for on-site protection and control. Control mode Protection mode, direct starting, two-way starting, two-speed starting, star/triangular starting, auto-transformer step-down starting, soft starter with starting, inverter and starting Measurement Three-phase voltage, three-phase current. Display Dot matrix LCD screen, Chinese and English display interface, visualized display of parameters, information and states Protection Overload inverse time, starting a timeout, locked-rotor, obstruction, short circuit, current imbalance, phase failure, underload, over flow, overvoltage, undervoltage, residual current, phase sequence, temperature, analog input, tE time, external fault protection, all the protection function can set the alarm value and action at the same time, and can be cast out, respectively