IS 4804 : Part 4 : 1973 : Resistance Welding Equipment - Part IV : Single Phase Stationary, Press Type Roll-spot and Seam Welding Machines

1. SCOPE

1.1 This standard ( Part IV) covers 'the essential electrical an~ mechanical features pertaining to standard sizes of stationary single-phase ac transformer type seam-welding machines. It does not inc1uQc electrical and electronic-control equipment.

1.2 This standard does not cover fixture type or special-purpose seam welding machines.