The device is used in coal mines containing explosive gas (methane) and coal dust. It is suitable for the circuit of AC 50Hz, voltage 660V or 1140V, ungrounded three-phase center. To local control or remote control the start and stop of three-phase asynchronous motor, and can be reversed at the stop.

Technical characteristics

●With local control and intrinsically safe remote control function

●With automatic water level control function, automatically control the start and stop of water pump according to the water level

●With menu operation structure, large LCD screen display, fault inquiry, fault recording and corresponding fault alarm information, and can record the specific time when the fault occurs

●With RS485 communication function, remote monitoring and control can be conveniently realized

Protection functions

With the multiple protection functions as short circuit, overload, leakage and open-phase

Main technical parameters

Rated operating voltage: 1140 or 660V

Rated frequency: 50Hz

Rated operating current: 200A, 300A, 400A