Specifies test procedures for in-service inspection and, after repair, to ensure electrical safety. These test procedures are also applicable for maintenance. Is applicable to power sources together with ancillary equipment for arc welding, cutting and allied processes built in conformity with IEC 60974-1.

IEC 60974-4 Ed. 2.0

CEI EN 60974-4 Ed. 1 (2007) - Identical

BS EN 60974-4:2007 - Identical

DIN EN 60974-4 (2007-09) - Identical

VDE 0544-4:2007 - Identical

I.S. EN 60974-4:2007 - Identical

PN EN 60974-4:2007 - Identical

UNE EN 60974-4:2007 - Identical

SS EN 60974-4 Ed. 1 (2007) - Identical

NEN EN IEC 60974-4:2007 - Identical

OVE/ONORM EN 60974-4:2007 - Identical