NEMA EW 7 : 1989
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
ELECTRICAL ARC WELDING POWER SOURCES FOR THE NON-PROFESSIONAL OPERATOR
01-08-1994
12-01-2013
Defines minimum mechanical and electrical construction and performance requirements applying to constant current arc welding power sources for manual shielded metal arc welding for non-professional operators.
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