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BS 5501-9:1982
M00000425
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BS 5501-9:1982 Electrical apparatus for potentially explosive atmospheres. Specification for intrinsically safe electrical systems 'i'
standard by BSI Group, 03/31/1982
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Specific requirements for construction and testing of intrinsically safe systems intended for use, as a whole or in part, in potentially explosive atmospheres. Supplements Part 7.Cross References: BS 5345:Part 1*CP 1003*BS 5501:Part 1*BS 5501:Part 7*
Replaced by BS EN 60079-25:2004 but remains current as obsolescent.