易爆气体环境.第35-1部分:对甲烷敏感的矿山中使用的帽灯.一般要求.与爆炸风险相关的结构和试验

[中文适用范围]： 本部分 IEC 60079-35 规定了适用于在易发瓦斯矿井（Group I-电气设备及爆炸性气体环境，如 IEC 60079-0 所定义）使用的矿灯（包括带有连接其他设备接口的矿灯）的构造、测试和标记要求。本文件仅涉及矿灯成为点火源的风险。性能要求见 IEC 60079-35-2。本标准补充并修改了 IEC 60079-0 的一般要求，如表 1 所示。如果本标准的要求与 IEC 60079-0 的要求冲突，以本标准的要求为准。符合本标准将提供 Mb 级别的设备保护等级（EPL）。如需 Ma 级别，矿灯必须符合本标准第 4.2 条的要求，该条款随后引用了 IEC 60079-11。预计不时会有符合本标准（EPL Mb）的矿灯在瓦斯含量超过法定水平的 atmosphere 中运行，此时需要疏散人员至非危险区域。在设计用于上述条件以外的条件运行的设备时，可使用本标准作为指导；但可能需要额外的测试。如果矿灯被评估为符合 IEC 60079-11 的本安设备 Ex ia，则仅需应用第 4.2 条列出的条款/子条款。 [外文原描述]： 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.