IS 4559 : 1993 Single operator rectifier type dc arc welding power source

1 Scope

1.1 This standard lays down the requirements and tests forsingle operator arc welding power sources incorporating solid staterectifiers and also thyristers and having drooping characteristics.

1.2 This standard does not cover `constants potential and otherspecial type of arc welding power sources.

References

IS 1248 : Part 2 :1983 Direct acting indicating analogueelectricalmeasuring instruments and their accessories:Part 2 Ammeters and voltmeters

IS 1271 :1985Thermal evaluation and classification ofelectrical insulation

IS 2511 :1963Polycrystalline semiconductor rectifier stacks

IS 2834 :1986Shunt capacitors for power systems

IS 3895 :1966Monocrystalline semiconductor rectifier cellsand stacks

IS 9678 :1980Methods of measuring temperature-rise ofelectrical equipment