ANSI/ISA-S12.25.01-1998 (IEC 79-5 Mod): Electrical Apparatus For Use In Class I, Zone 1 Hazardous (Classified)

This standard contains the specific requirements for the construction, testing and marking of electrical apparatus, parts of electrical apparatus and ex components in the type of protection powder filling q, intended for use in potentially explosive atmospheres of gas, vapor and mist.

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