... IGBT works consistently in ZCS state, realize the IGBT ”soft switch” function. Avoid IGBT working at high peak voltage, and reduce the ... frequency: 0.5-20KHZ 6).Inverted power≤160KVA 7).Perfect function of protect itself,such as over-voltage,over current,lack ... ,over hot,etc. 8).Digital auto-control,it has the function of manual,automatic and heating-keeping-cooling divide period to ...