... and labs3) For others which need frequency conversion power supplyTechnical characteristics: Output power500VA200KVACircuit modeIGBT/PWM inverter typeOutput phaseSingle ... ±1.5%(impedance load)Response time2msRead outputVoltage , Current, Power, Frequency, LED digitalProtections functionOver voltage, over load, over ... 0-90% (no-coagulating) Digital Programmable Variable Frequency AC Power Supply