Internal Area Figure Application: Protection & Control of duplex pump,three phase Main features: Built in function switch to apply different application Applied for water supply by liquid level control Applied for booster by pressure control Applied for water drainage by liquid level control Double pump control Main pump / Standby pump automatically switch against malfunctions Standby pump participate running if required Computer main board and module for industrial & civil pump Auto / Manual switch Push button calibration Pump stalled protection Transient surge protection Open phase protection Dry running protection without installing float switch or liquid probe in the well Prompt for uncompleted parameter calibrating Pump accumulative running time displaying Pump last five fault record displaying LCD displays pump running time displaying RS485 communication interface Rapid cycle protection Pump shaft rust protection Pump motor winding over temperature protection Three phase unbalance protection Phase reversal protection
Main specifications: Rated input voltage:AC380/Three phase Rated frequency:50Hz/60Hz Rated output power of pump motor:0.75-4KW 5.5-7.5KW
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