Under-voltage control relay WDH-31-500

over-voltagecurrentphase sequence

The motor protection controller can provide up to 12 programmable digital inputs (optional dry and wet contacts), 7 programmable relay outputs, all programmable inputs and outputs, all of which meet the requirements of different protection control requirements on site. The function can set the alarm value and the action value at the same time, and can respectively retreat and retreat, and the protection parameters can be adjusted by the professional according to the actual working condition of the field motor, and the power failure is not lost. Motor protection controller WDH-31-500 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 Other functions Equipped with "anti-shake" function, undervoltage restartfunction and self-starting function Data record 20 fault records, 12 entry and change bit records, 12 starting records and 12 parking records Output Supporting Modbus-RTU or Profibus-DP communication protocol;12-channel programmable switching value input;7-channel programmable relay output;l-channel programmable analog output