Features: 1) High efficiency > 85 % 2) Automatic frequency tracking 3) Self diagnostic system for easy and fast fault finding 4) Compact design 5) Easy installation 6) Reliable performance The GGP series solid state high frequency induction welder is a high frequency power supply that convert the three phase alternating current of 50Hz/60Hz line frequency to the single phase high frequency (100~450 kHz) current for the purose of steel tube / stell pipe welding. The GGP series solid state high frequency induction welder / generator, also known as transistor welding machine, integrates the modern power electronic device MOSFET module as the key device of the inverter. The intelligentized control system of the rectifying and inverting is achieved through single chip microcomputer. Our HF welder is featured with high efficiency, simple and reliable configuration, easy debugging and operation, energy saving, etc. HF Welder Specifications Power output 60kW 100kW 150kW 200kW 300kW 400kW DC power 60kW 120kW 180kW 240kW 360kW 480kW Rated voltage 400V Rated current 150A 300A 450A 600A 900A 1200A