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Coolers of air-cooling system of power semiconducting devices. General specifications
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Uninterruptible power systems (UPS). Part 1. General and safety requirement for UPS
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Reciprocating internal combustion engines. Exhaust emission and visible pollutants. Measurement of exhaust emission at site
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Caplights for use in mines susceptible to firedamp. Part 2. Performance and other safety-related matters
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Electrical apparatus for explosive gas atmospheres. Part 15. Construction, test and marking of type of protection 'n' electrical apparatus
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