... used for electro chemical macining, meet piece works power supply requirement. 2. Main technical parameters AC input voltage ... loss, lack voltage, overvoltage, undervoltage,overcurrent, overheat, short circuit Seal box from dust and moisture IP 54DisplayTouch screen ... indoor, ambient temperature: -100C~+400CThree phase input power supply requirements: 380VAC±10%. Three phase power imbalance degree is ...