CAN/CSA C22.2 No. 60079-31:12 Electrical apparatus for use in the presence of combustible dust - Part 4: Type of protection "pD" (Adopted IEC 61241-4:2001, first edition, 2001-03, with Canadian deviations)

standard by Canadian Standards Association / National Standard of Canada, 03/27/2012

Full Description

Scope

This part of IEC 60079 is applicable to electrical equipment protected by enclosure and surface temperature limitation for use in explosive dust atmospheres. It specifies requirements for design, construction and testing of electrical equipment.

This standard supplements and modifies the general requirements of IEC 60079-0. Where a requirement of this standard conflicts with a requirement of IEC 60079-0, the requirement of this standard shall take precedence.

This standard does not apply to dusts of explosives, which do not require atmospheric oxygen for combustion, or to pyrophoric substances.

This standard does not apply to electrical equipment intended for use in underground parts of mines as well as those parts of surface installations of such mines endangered by firedamp and/or combustible dust.

This standard does not take account of any risk due to an emission of flammable or toxic gas from the dust.

NOTE 1 The application of electrical equipment in atmospheres, which may contain combustible dust as well as explosive gas, whether simultaneously or separately, may require additional protective measures.

NOTE 2 Where the equipment has to meet other environmental conditions, for example, protection against ingress of water and resistance to corrosion, additional methods of protection may be necessary. The method used should not adversely affect the integrity of the enclosure.

Product Details

Edition: 1st Published: 03/27/2012 Number of Pages: 50 File Size: 1 file , 920 KB Product Code(s): 2421657, 2421657