... wear and tear and mechanical shock 4>COMPRESSOR: using current limiting , to realize smooth start and lower the ... role: such as over/ under voltage, over/under current, overheat, overload, short circuit, open-phase, overheat, communication faults, ... 10%frequency50Hzrated power5.5KW ~ 500KWsuitable motorsquirrel cage AC motorstart current< 1.5 ~ 4 IeconnectorDCS and RS485working conditionHumidity <80 ...