1. IGBT induction power transformer 2 Series resonance circuit 3. Best heating efficient 4. ... power:100KVA 3)Input voltage:380V 50HZ 4)Max input current: single phase 150A 5)Oscillating frequency: 0.5- ... Perfect function of protect itself, such as over-voltage, over current, lack of water, phase fail, over hot, etc. 8 ... the machine work continuously. Alibaba official suggest IGBT induction transformer