Scope: This part of IEC 60079 specifies requirements for the construction, testing and marking for Group II electrical equipment with type of protection "n" which includes; sealed devices "nC", hermetically sealed devices "nC", non-incendive components "nC" and restricted breathing enclosures "nR" intended for use in explosive gas atmospheres. This part of IEC 60079 applies to electrical equipment where the rated input voltage does not exceed 15 kV r.m.s. AC or DC including where the internal working voltages of the Ex product exceeds 15 kV, for example starters for HID luminaires.
This part of IEC 60079 supplements and modifies the general requirements of IEC 60079-0, except as indicated in Table 1. Where a requirement of this part of IEC 60079 conflicts with a requirement of IEC 60079-0, the requirement of this part of IEC 60079 takes precedence.Cross References:IEC 60079-0IEC 60079-7EN 60079-7:2015EN IEC 60079-0:2018IEC 60079-11EN 61347-2-1EN 60297EN 60079-18EN 60079-17IEC 60079-18IEC 60079-1EN 60079-11EN 60079-2EN 60079-1IEC 60297IEC 61347-2-1IEC 60079-2IEC 60079-17All current amendments available at time of purchase are included with the purchase of this document.