Mine DC rail welding machine 

 Mine production of DC track welder I have used mine track Siemens IGBT DC welding machine as the main power components, the control circuit using the most advanced soft-switching full-bridge phase-shift control, making the switch loss greatly reduced efficiency, welding machine's quality, performance, and many have been beneficial to security. 
 Mine DC welding machine motor vehicles can use mine to track the DC overhead line power supply, pipelines, mine car, such as welding. Use, the welding wire the main line power to welding on a ride, easy to use. 
 Mine orbital welding technical parameters DC 
 Welding Model AKH-315 A / B AKH-400 A / B AKH-500 A / B 

 Technical parameters 
 DC input voltage (V) A type of 250 (180-320) B-type 550 (400-700) 
 Rated output current (A) 315 400 500 
 Current range (A) 50-315 50-400 50-500 
 Rated load voltage (V) 75 75 75 
 Rated duty cycle (%) 60 60 60 
 Overheat protection (℃) 65 65 65 
 Duty cycle (min) 10 10 10 
 Efficiency (%) 90 90 90 
 Power factor (%) 85-92 85-9285-92 
 Insulation class FFF 
 Protection class IP21 IP21 IP21 enclosure 
 Cooling Forced air cooling forced air force 
 Dimensions (mm) 450 * 280 * 290 450 * 280 * 290 480 * 314 * 330 
 Weight (kg) 23 23 28