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YUEQING MINGCH ELECTRICAL is a professional manufacurer of power supply products,like:voltage stabilizer,voltage regulator,switching power supply etc., 150K 3phaseVoltageStabilizer ( AIVS ): Power: 150KVA Technology: servo motor type transformer, analog displayer Input Voltage:280Vac 460Vac Input Frequency: 50/60Hz Output Voltage: 400Vac Output Accuracy: ±3% Efficiency: 98% Phase:three phase Display: analog display input voltage/ output voltage Protection: High voltage protection Low voltage protection Overload protection Surge & Spike Protection High temperature protection Circuit protection: circuit breaker Smart Cooling System:Yes Compliant Standards: CE, EN60950, EN55024 Operating Temperature: 0 40 Storage Temperature: -15 45 Operating Relative Humidity: 10%RH 102%RH, Non-condensing Machine dimension:100*72*170cm N.W.(Kgs): 535Kgs