500kw Solid State High Frequency Tube Welder for ERW Tube Mill Line

500kw Solid State High Frequency Tube Welder for ERW Tube Mill Line. High Efficiency PSM Technology: Ensures constant 450V DC voltage and optimal power factor for energy saving. Modular Inverter Design: Composed of five 100kW MOSFET bridges for easy maintenance and high reliability. Advanced PLC Control System: Siemens S7-1200 PLC enables remote monitoring, data recording, and fault diagnosis. Closed Water Cooling System: Purified water circulation prevents scaling and ensures stable operation without blockage. Optimized Welding Frequency: Frequency range 200-250kHz is 20-30% higher than original designs for better efficiency. Stainless Steel Control Desk: Features touch screen with protection cover for easy cleaning and extended service life. Continuous Working System: Designed for 24/7 continuous operation with low failure rate and high stability. Versatile Welding Material: Specifically designed for low carbon steel with adjustable output power.