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CAN/CSA-E79-18-95 (R2009)

Electrical Apparatus for Explosive Gas Atmospheres - Part 18: Encapsulation "m" (Adopted IEC 79-18:1992, first edition, with Canadian deviations)

SKU: 2410391 Published by CSA Group Publication Year 1995 Reaffirmed in 2009 49 pages Withdrawn

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Preface/Scope

Scope

This part of IEC 79 prescribes the specific requirements for construction and testing of electrical apparatus, parts of electrical apparatus and Ex components which have rated voltages not exceeding 11 kV with the type of protection encapsulation m.
These specific requirements supplement IEC 79-0 General Requirements with the following exceptions.

Clauses of IEC 79-0 which are not applicable:

4.2 Maximum surface temperature (for Ex components); 5.2 Time delay before opening an enclosure; 6.2 Threaded holes in enclosures of plastic material; 8 Fasteners; 9 Interlocking devices; 15 Cable and conduit entries; 17 Switch gear; 18 Fuses; 20.2 Warning label for luminaries; 22.4.3.1 Test for resistance to impact (for Ex components); 22.4.4 Test for degree of protection for enclosures; 22.4.8 Test in explosive mixtures; 22.4.9 Test of clamping of non-armored cables in cable entries; 22.4.10 Test of clamping of armored cables in cable entries.

Domaine d’application

La présente partie de la CEI 79 prescrit les règles spécifiques de construction et d'épreuves des matériels électriques, parties de matériels électriques et composants Ex dont la tension nominale ne dépasse pas 11 kV du mode de protection par encapsulage «m».

Les présentes règles spécifiques complètent la publication CEI 79-0 «Règles générales» avec les exceptions suivantes.

Articles de la CEI 79-0 qui ne s'appliquent pas:

4.2 Température maximale de surface (pour les composants Ex); 5.2 Délai d'ouverture des enveloppes; 6.2 Trous taraudés dans les enveloppes en matière plastique; 8 Fermetures; 9 Dispositifs de verrouillage; 15 Entrées de câbles et entrées de conduits; 17 Appareillage de coupure et de sectionnement; 18 Coupe-circuit à fusibles; 20.2 Plaque d'avertissement pour luminaires; 22.4.3.1 Épreuves de tenue aux chocs (por les composants Ex); 22.4.4 Épreuves des degrés de protection des enveloppes; 22.4.8 Épreuves en mélanges explosifs 22.4.9 Épreuves d'amarrage des câbles sans armure dans les entrées de câble; 22.4.10 Épreuves d'amarrage des câbles avec armure dans les entrées de câble.

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CAN/CSA-E79-18-95 (R2009)

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