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Explosive atmospheres - Part 35-1: Caplights for use in mines susceptible to firedamp - General requirements - Construction and testing in relation to the risk of explosion
STANDARD published on 26.5.2011
Designation standards: IEC 60079-35-1-ed.1.0
Publication date standards: 26.5.2011
SKU: NS-408767
The number of pages: 38
Approximate weight : 114 g (0.25 lbs)
Country: International technical standard
Category: Technical standards IEC
IEC 60079-35-1:2011 specifies requirements for the construction, testing and marking of caplights, including caplights with a point of connection for other equipment, for use in mines susceptible to firedamp (Group I - electrical equipment for explosive gas atmospheres as defined in IEC 60079-0). It deals only with the risk of the caplight becoming a source of ignition. The requirements for performance are in IEC 60079-35-2. This standard supplements and modifies the general requirements of IEC 60079-0 except as indicated in Table 1. This first edition cancels and replaces the second edition of IEC 62013-1, published in 2005, and constitutes a full technical revision. The main technical differences with respect to the previious edition are: - the introduction of a means to achieve an equipment protection level (EPL) of Ma; - the introduction of a single clause relating to equipment construction replacing individual specific clauses for the headpiece, battery, cable and external charging contacts; - the deletion of statements relating to surface temperature, the rewording of statements relating to creepage and clearance and the addition of statements relating to thermal protection, electronic assemblies and additional circuitry; - specific referenc to lithium cells; - the addition of statements relating to battery recharging and protection against deep discharge. La CEI 60079-35-1:2011 specifie les exigences pour la construction, les essais et le marquage des lampes-chapeaux, y compris les lampes-chapeaux avec un point de connexion pour dautres materiels, utilisables dans les mines grisouteuses (Groupe I - materiels electriques pour les atmospheres explosives gazeuses comme definies dans la CEI 60079-0). Elle traite uniquement du risque, presente par une lampe-chapeau, de devenir une source dinflammation. Les exigences daptitude a la fonction se trouvent dans la CEI 60079-35-2. La presente norme complete et modifie les exigences generales de la CEI 60079-0, excepte pour ce qui est indique dans le Tableau 1. Cette premiere edition annule et remplace la deuxieme edition de la CEI 62013-1, parue en 2005, et constitue une revision technique generale. Les differences techniques principales par rapport a ledition precedente sont: - lintroduction dun article unique relatif a la construction du materiel, remplacant les differents articles specifiques pour le projecteur, la batterie, le cable et les contacts exterieurs de charge; - la suppression des indications concernant la temperature de surface, la reformulation des enonces relatifs aux lignes de fuite et aux distances dans lair, et ladjonction dindications concernant la protection thermique, les ensembles electroniques et les circuits additionnels; - une reference specifique aux elements au lithium; - ladjonction dindications concernant la recharge de la batterie et la protection contre la decharge severe.
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