CAN/CSA-C22.2 NO. 60079-5:16 (R2021):2016 Edition
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Explosive atmospheres – Part 5: Equipment protection by powder filling “q”
| Published By | Publication Date | Number of Pages |
| CSA | 2016-10-01 | 71 |
Preface
This is the second edition of CAN/CSA-C22.2 No. 60079-5, Explosive atmospheres – Part 5: Equipment protection by powder filling q, which is an adoption, with Canadian deviations, of the identically titled IEC (International Electrotechnical Commission) Standard 60079-5 (fourth edition, 2015-02). It supersedes the previous edition published in 2011 as CAN/CSA-C22.2 No. 60079-5 (adopted IEC 60079-5:2007). It is one in a series of Standards issued by CSA Group under Part II of the Canadian Electrical Code.
For brevity, this Standard will be referred to as CAN/CSA-C22.2 No. 60079-5 throughout.
This Standard is intended to be used in conjunction with CAN/CSA-C22.2 No. 60079-0, Explosive atmospheres – Part 0: Equipment – General requirements.
Changes in this edition include the removal of Canadian deviations that are no longer applicable.
The fourth edition of the IEC Standard includes the following changes:
b) relaxation introduced to permit use of the creepage dimensions of IEC 60079-7 under certain conditions; and
c) the addition of a batch routine test.
Scope
This part of IEC 60079 contains specific requirements for the construction, testing and marking of electrical equipment, parts of electrical equipment and Ex components in the type of protection powder filling q, intended for use in explosive gas atmospheres.
NOTE 1 Electrical equipment and Ex components protected by powder filling q can contain electronic circuits, transformers, protection fuses, relays, intrinsically safe electrical apparatus, associated electrical apparatus, switches, etc.
NOTE 2 Type of protection powder filling q provides Equipment Protection Level (EPL) Gb or Mb.
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 takes precedence.
This Standard applies to electrical equipment, parts of electrical equipment and Ex components with:
- a rated supply current less than or equal to 16 A;
- a rated supply voltage less than or equal to 1 000 V;
- a rated power consumption less than or equal to 1 000 W.
