1.范围1。1本标准涵盖以下仅用于连接铜导线以及在危险场所安装和使用的装置:I类，A、B、C和D组；根据加拿大电气规范第一部分和CSA标准CAN3-M421的规定，用于安装和使用的II类G组煤尘或焦尘以及气态矿井中:（a）带连接插头的插座；（b） 带有与断路器联锁的连接插头的插座；（c） 带有与开关联锁的连接插头的插座；（d） 电缆和电线连接器、耦合器、法兰设备电源插座和法兰设备电源插座的额定值如第1条所规定。 2.1.2本标准适用于额定电流不超过600 A或600 V ac和250 V dc的设备。本标准还适用于额定电压不超过1100 V ac的气态矿山设备。1.3本标准不适用于不包含延迟抽出或联锁机构的直拉式插头和插座/连接器。注:在本标准中，分类为G组位置的装置可用于含煤或焦尘的大气中。

1. Scope1.1This Standard covers the following devices intended for connection to copper conductors only and for installation and use in hazardous locations: Class I, Groups A, B, C, and D; Class II, Group G, in coal or coke dust, and in gaseous mines for installation and use in accordance with the Rules of Canadian Electrical Code, Part I and CSA Standard CAN3-M421: (a) receptacles with attachment plugs; (b) receptacles with attachment plugs interlocked with circuit breakers; (c) receptacles with attachment plugs interlocked with switches; (d) cable and cord connectors, couplers, and flanged equipment power inlets and flanged equipment power outlets with ratings as specified in Clause 1.2.1.2This Standard covers devices rated not more than 600 A or more th an 600 V ac and 250 V dc. This Standard also covers equipment for gaseous mines rated not more than 1100 V ac.1.3This Standard does not cover a straight pull plug and receptacle/connector that does not incorporate either a delayed withdrawal or an interlock mechanism. Note: In this Standard devices that are classified for Group G locations are acceptable for use in atmospheres containing coal or coke dust.