Draft Details

CSA Scope

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The requirements of the IEC 60079 series of Standards cover protection with respect to explosion hazard only. The CSA C22.2 No. 60079 series of Standards (based on the adoption of the corresponding IEC Standards) is to be used in conjunction with other applicable Standards containing the appropriate electrical safety requirements for general use equipment.

This Standard applies to the safety of such equipment designed and constructed for installation and use in accordance with CSA C22.1, Canadian Electrical Code, Part I.

IEC Scope

This part of IEC 60079 specifies general and testing requirements for electrical resistance trace heaters for application in explosive atmospheres with the exclusion of those for Equipment Protection Levels (EPL) Ga, Da, Ma and Mb equipment. This document covers trace heaters that comprise either factory or field (worksite) assembled units, and which can be series trace heaters, parallel trace heaters, trace heater pads, or trace heater panels that have been assembled and/or terminated in accordance with the manufacturer's instructions.

This document also includes requirements for termination assemblies and control methods used with trace heating systems. The explosive atmospheres referred to in this document are those defined in IEC 60079-10-1 and IEC 60079-10-2. Annex F and Annex G outline the application of this document for those users applying the Division method of area classification.