BS 4782:1971
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Specification for ballasts for discharge lamps (excluding ballasts for tubular fluorescent lamps)
Hardcopy , PDF
31-08-1991
English
30-04-1982
Deals with requirements and tests for safety, construction and performance at 50 Hz for use with mercury lamps specified in BS 3677 and sodium lamps specified in BS 3767, high pressure sodium vapour lamps and metal halide lamps.
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