ANSI/ISA 60079-1 (12.22.01)-2009

This part of IEC 60079 standard contains specific requirements for the construction and testingof electrical equipment with the type of protection flameproof enclosure d, intended for use inClass I, Zone 1, explosive gas atmospheres.

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

NOTE Equipment protection by flameproof enclosures d provides Equipment Protection Level (EPL) Gb. For further information,see Annex G.

This product replaces:ANSI/ISA 12.22.01-2005 - Electrical Apparatus for Use in Class I, Zone 1 Hazardous (Classified) Locations: Type of Protection - Flameproof 'd'