Common knowledge and safety points of electric welder
AC welding machine is a special structure of step-down transformer, no-load voltage is 60-80V, working voltage is 30V; power 20-30kW, secondary current is 50-450A; power supply voltage 380/220 V. DC welding machine uses a three-phase motor to drive a special structure of the DC generator; silicon rectifier DC welding machine is the use of silicon…
