Welder no-load power saver circuit diagarm 9

Published:2011/6/10 3:40:00 Author:Lucas | Keyword: Welder, no-load, power saver | From:SeekIC

The welder no-load power saver circuit is composed of the knife switch Q, AC contactor KM, buck capacitor C, keeping resistor R1, starting resistor R2, time relay KT, welding transformer T, and the circuit is shown as the chart. Turning on the knife switch Q will make AC contactor KM get power and pull in, and its normally open contacts KM1 and KM2 are connected, then the welder can do the normal work. R1 and R2 select the 20W wire-wound resistor. C uses the CBB capacitor or oil capacitor with the voltage being 630V. KT selects the time relay with the coil voltage in 24V, such as JS7-2A type. KM selects the AC contactor with the coil voltage being 380V (or 220V) . The use of Q can be according to the power of T.



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