爆炸性气体环境用电气设备 第0部分：概述

[中文适用范围]： 规定了爆炸性气体环境用电气设备的构造、测试和标记的一般要求。适用于爆炸性气体环境的爆炸特性的大气条件被视为压力在 80 kPa (0.8 bar) 至 110 kPa (1.1 bar) 范围内、温度在 -20°C 至 +60 范围内的电气设备°C。超出此范围的大气条件可能需要特别考虑。不适用于规定电气参数不超过 1-2 V、0.1 A、20 µJ 或 25 mW 中任何一个值的设备，这些设备无需按照 IEC 79 的要求进行认证或标记。但是，此类设备须遵守IEC 79 各个部分的要求，如果它们连接到包含电源或存储元件的设备，可能会导致电路超出这些参数。取代 IEC 79-8 和 79-9。 [外文原描述]： Specifies general requirements for construction, testing and marking of electrical apparatus for explosive gas atmospheres. Applies to electrical apparatus where atmospheric conditions for the explosion characteristics of the explosive gas atmosphere are considered as having pressures in the range 80 kPa (0.8 bar) to 110 kPa (1.1 bar) at a temperature in the range -20°C to +60°C. Atmospheric conditions outside this range may need special consideration. Does not apply to devices whose stated electrical parameters do not exceed any of the values 1-2 V, 0.1 A, 20 µJ or 25 mW, which need not be certified or marked as required by IEC 79. However, such devices are subject to the requirements of the various parts of IEC 79 if they are connected to a device which contains a source or a storage element of electrical energy which could cause the circuit to exceed these parameters. Replaces IEC 79-8 and 79-9.