... ~100%Efficiency 90%Power factor 0.93Ripple <3%Finishing RAL7032Protections Phase loss, lack voltage, overvoltage, undervoltage,overcurrent, overheat, short circuit Seal ... . Working ConditionUsed indoor, ambient temperature: -100C~+400CThree phase input power supply requirements: 380VAC±10%. Three phase power imbalance degree is less than 5 ...