Micro TIG Welder
Pulsation allows the user to selectively turn the current on and off during the weld. The frequency can be up to 5 kHz for very rapid firing. Touch start drives the electrode to contact the workpiece and then retract at a given speed. The electrode starts to fire in low current at short distance from the part. This feature helps control the location of the weld, as well as reducing electrical noise emitted in the arc generation. The MAWA-300A welder is a three phase unit that weighs 30kg (excluding torch and torch stand). The set range of weld time is 0 to 2000ms and the control method is FET driven constant current control. Power consumption is 13.5kVA (5%) and it has 32 channels. The set range of weld time is 0 to 999ms and the control method is IGBT driven constant current control. Power consumption is 2.3kVA (5%) and it also has 32 channels.