CSA C22.2 NO. 60079-6:17 (R2022)

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Explosive atmospheres - Part 6: Equipment protection by liquid immersion "o" (Adopted IEC 60079-6:2015, fourth edition, 2015-02, with Canadian deviations)

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Explosive atmospheres - Part 6: Equipment protection by liquid immersion "o" (Adopted IEC 60079-6:2015, fourth edition, 2015-02, with Canadian deviations)

PUBLISH DATE 2022
Explosive atmospheres - Part 6: Equipment protection by liquid immersion "o" (Adopted IEC 60079-6:2015, fourth edition, 2015-02, with Canadian deviations)
CSA Preface This is the second edition of CAN/CSA-C22.2 No. 60079-6, Explosive atmospheres - Part 6: Equipment protection by liquid immersion "o", which is an adoption, with Canadian deviations, of the identically titled IEC (International Electrotechnical Commission) Standard 60079-6 (fourth edition, 2015-02). It supersedes the previous edition published in 2011 as CAN/CSA-C22.2 No. 60079-6, Explosive atmospheres - Part 6: Equipment protection by oil immersion "o" (adopted IEC 60079-6:2007). 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. 60079-6" 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 to this edition include the following: a) The requirements for oil immersion "o" have been redefined into liquid immersion, levels of protection "ob" and "oc" as recommended by the responses to 31/715/DC. b) The ability to protect sparking contacts has been added to both "ob" and "oc". c) Additional requirements have been introduced for the protective liquid. This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard. This Standard was reviewed for Canadian adoption by the CSA Integrated Committee on Hazardous Location Products, under the jurisdiction of the CSA Technical Committee on Industrial Products and the CSA Strategic Steering Committee on Requirements for Electrical Safety, and has been formally approved by the Technical Committee. This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. Scope This part of IEC 60079 specifies the requirements for the design, construction, testing and marking of Ex Equipment and Ex Components with type of protection liquid immersion "o" intended for use in explosive gas atmospheres. Ex Equipment and Ex Components of type of protection liquid immersion "o" are either: ‱ Level of Protection "ob" (EPL "Mb" or "Gb") ‱ Level of Protection "oc" (EPL "Gc") For Level of Protection "ob", this standard applies where the rated voltage does not exceed 11 kV r.m.s. a.c. or d.c. For Level of Protection "oc", this standard applies where the rated voltage does not exceed 15 kV r.m.s. a.c. or d.c. NOTE Requirements for higher voltages are under consideration. 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. -------------------------------------------------------------------------------------------------------------------------------- PrĂ©face CSA Ce document constitue la deuxiĂšme Ă©dition de la CAN/CSA-C22.2 nÂș 60079-6, AtmosphĂšres explosives -Partie 6 : Protection du matĂ©riel par immersion dans le liquide «o». Il s’agit de l’adoption, avec exigences propres au Canada, de la norme IEC (Commission Électrotechnique Internationale) 60079-6 (quatriĂšme Ă©dition, 2015-02) qui porte le mĂȘme titre. Il remplace l’édition antĂ©rieure publiĂ©e en 2011 qui portait la dĂ©signation CAN/CSA-C22.2 nÂș 60079-6, AtmosphĂšres explosives - Partie 6 : Protection du matĂ©riel par immersion dans l’huile «o» (norme IEC 60079-6:2007 adoptĂ©e). Il fait partie d’une sĂ©rie de normes publiĂ©es par le Groupe CSA qui constituent le Code canadien de l’électricitĂ©, DeuxiĂšme partie. Par souci de briĂšvetĂ©, tout au long de ce document, il sera appelĂ© «CAN/CSA-C22.2 nÂș 60079-6». Cette norme doit ĂȘtre utilisĂ©e avec la CAN/CSA-C22.2 nÂș 60079-0, AtmosphĂšres explosives - Partie 0 : MatĂ©riel - Exigences gĂ©nĂ©rales. Voici les principaux changements apportĂ©s Ă  cette Ă©dition : a) Les exigences relatives Ă  l’immersion dans l’huile «o» traitent dĂ©sormais de l’immersion dans un liquide, de niveaux de protection «ob» et «oc», selon les recommandations des rĂ©ponses au document 31/715/DC. b) La capacitĂ© Ă  protĂ©ger les contacts Ă  dĂ©charge disruptive a Ă©tĂ© ajoutĂ©e aux niveaux de protection «ob» et «oc». c) Des exigences supplĂ©mentaires relatives au liquide de protection ont Ă©tĂ© introduites. Cette norme est jugĂ©e convenable Ă  l’évaluation de la conformitĂ© selon le domaine d’application Ă©tabli dans la norme. Cette norme a Ă©tĂ© rĂ©visĂ©e en vue de son adoption au Canada par le ComitĂ© CSA intĂ©grĂ© sur les produits pour emplacements dangereux, sous l’autoritĂ© du ComitĂ© technique CSA sur les produits industriels et du ComitĂ© directeur stratĂ©gique CSA sur les exigences en matiĂšre de sĂ©curitĂ© Ă©lectricitĂ©, et a Ă©tĂ© officiellement approuvĂ©e par le ComitĂ© technique. Cette norme a Ă©tĂ© Ă©laborĂ©e conformĂ©ment aux exigences du Conseil canadien des normes relatives aux Normes nationales du Canada. Cette norme a Ă©tĂ© publiĂ©e en tant que Norme nationale du Canada par Groupe CSA. Domaine d'application La prĂ©sente partie de l'IEC 60079 spĂ©cifie les exigences de conception, de construction, d'essais et de marquage d’un matĂ©riel Ex et de composants Ex, de mode de protection immersion dans le liquide "o", destinĂ©s Ă  ĂȘtre utilisĂ©s dans des atmosphĂšres explosives gazeuses. Un matĂ©riel Ex et des composants Ex de mode de protection immersion dans le liquide "o" peuvent ĂȘtre du: ‱ Niveau de Protection "ob" (EPL "Mb" ou "Gb"), ou ‱ Niveau de Protection "oc" (EPL "Gc") Pour le Niveau de Protection "ob", la prĂ©sente norme s’applique si la tension assignĂ©e est infĂ©rieure Ă  11 kV eff. c.a. ou c.c. Pour le Niveau de Protection "oc", la prĂ©sente norme s’applique si la tension assignĂ©e est infĂ©rieure Ă  15 kV eff. c.a. ou c.c. NOTE Des exigences pour des tensions plus Ă©levĂ©es sont Ă  l'Ă©tude. La prĂ©sente norme complĂšte et modifie les exigences gĂ©nĂ©rales de l'IEC 60079-0. Lorsqu'une exigence de la prĂ©sente norme entre en contradiction avec une exigence de l'IEC 60079-0, l’exigence de la prĂ©sente norme prĂ©vaut.
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