IS 7931 : Part 1 : 1975 Automatic and semi-automatic welding equipment with self-adjusting arcs (MIG/MAGprocesses): Part 1 dc welding generator power source

1. Scope

1.1 This standard (Part I ) Jays down the requirements, tests and serVIce conditions for dc arc welding generator power source having a flat load characteristic f..ll semi-automatic and automatic arc self-adjusting arcs (MIG/MAG processes).

1.2 The winding of generator covered by this standard are of insulation classes A,E,B,F and H.

1.3 Welding generatores covered by this standard are assigned ratings on the basis of duty cycle.