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简要介绍了爆炸危险场所的分级、防爆电气设备选用的原则,并从设备外壳和表面温度两方面论述了爆炸性气体环境中的隔爆型电气设备与爆炸性粉尘环境中的粉尘防爆电气设备的异同点
This paper briefly introduces the classification of hazardous places and the principle of selection of explosion-proof electrical equipment. The similarities and differences between explosion-proof electrical equipment in explosive gas environment and dust explosion-proof electrical equipment in explosive dust environment are discussed from two aspects of equipment shell and surface temperature