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Electrical apparatus for explosive gas atmospheres - Part 2: Pressurized enclosures “p”

Executive summary

Requirements for the design, construction, testing and marking of electrical apparatus with pressurized enclosures, of protection type “p”, for use in explosive gas atmospheres.

Abstract

This part of IEC 60079 specifies requirements for the design, construction, testing and marking of electrical apparatus with pressurized enclosures, of protection type “p”, intended for use in explosive gas atmospheres.

The requirements contained in this standard are supplementary to those in IEC 60079-0.

This European Standard specifies requirements for pressurized enclosures containing a limited release of a flammable substance.

This standard does not contain the requirements for pressurized enclosures where the containment system may release:

- air with an oxygen content greater than normal; or

- oxygen in combination with inert gas in a proportion greater than 21%.

This standard does not contain requirements for pressurized rooms or analyser houses; which are specified in IEC 60079-13 and IEC 60079-16.

This standard includes requirements for the apparatus and its associated equipment including the inlet and exhaust ducts, and also for the auxiliary control apparatus necessary to ensure that pressurization and/or dilution is established and maintained.

History and related standards

This European Standard supersedes BS EN 50016:2002 which will be withdrawn in June 2007.

This standard includes the following cross references:

IEC 60034-5, IEC 60050(151), IEC 60050(426), IEC 60112:1979, IEC 60529, IEC 60664-1:1992.

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