Comprises particular specifications for the development and checking out of electric equipment with the kind of safeguard flameproof enclosure ""d"", meant to be used in explosive gasoline atmospheres.

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Extra resources for Iec 60079-1-Electrical Apparatus For Explosive Gas Atmospheres. Flameproof Enclosures D

Example text

1) ni aux joints qui comportent des garnitures d’étanchéité en métal ou en matériaux compressibles ininflammables avec une gaine métallique. De telles garnitures d’étanchéité contribuent à la protection contre les explosions, et dans ce cas, l’interstice entre chaque surface de la partie plane doit être mesuré après compression. La longueur minimale de la partie cylindrique doit être maintenue avant et après compression. 3 Threaded joints Threaded joints shall comply with the requirements in Tables 3 or 4.

4 Certificat de composant Les certificats de composant Ex doivent comporter tous les détails nécessaires pour choisir convenablement un dispositif de respiration ou de drainage pour le fixer à une enveloppe antidéflagrante ayant subi un essai de type. Le certificat de composant Ex doit faire apparaître a) le nom du constructeur et les schémas et spécifications d'identification; b) la pression limite de référence; NOTE Le choix du dispositif utilisé comme composant est effectué de façon que la pression limite de référence du dispositif ne soit pas inférieure à la pression de référence de l'enveloppe antidéflagrante (essayée avec les entrées du dispositif de respiration et de drainage obturées) sur laquelle le dispositif est à fixer.

2, is passed, when the width of the threaded joint specified by the manufacturer is reduced by the amount specified in Table 6. Table 4 – Taper threaded joints Pitch ≥0,9 mm Threads provided on each part ≥5 b Threads engaged c a Internal and external thread shall have the same nominal size, cone angle and thread form. 1, and shall be made-up wrench tight. c Threads made in accordance with this table will provide greater than 3,5 effective threads engaged. 4 Gaskets (including O-rings) If a gasket of compressible or elastic material is used, for example, to protect against the ingress of moisture or dust or against leakage of a liquid, it shall be applied as a supplement, that is to say neither be taken into account in the determination of the width of the flameproof joint nor interrupt it.

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