Q:-When using multiple SAW arc systems (twin wire etc) the arc after have difference polarities are used as AC rather then DC polarity. This is to, | AWS CWI TRAINING COURSE

Tuesday 21 July 2015

Q:-When using multiple SAW arc systems (twin wire etc) the arc after have difference polarities are used as AC rather then DC polarity. This is to,

Prevent the arc blow between the arcs
To minimize the productivity
To even out the power factoron the main supply
Make it easier to initiate the arc

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