防爆电气设备的选型实践

Selection Study of Explosion Proof Electrical Equipment

阐述了爆炸物的分类、爆炸混合物的分级分组及其爆炸环境的区域等级划分,防爆电气设备的防爆结构分类、适用环境区域等级、表面允许温度组别及标志规则。明确了易爆场所防爆电气设备的选型要求,只有电气设备的防爆性能与易爆环境相符合或者高于爆炸环境要求,才能满足防爆要求。

It describes the classification of explosives,mixtures,environment,electrical equipment structure,applicable environment,the allowable surface temperature group and the marking rules.The selection requirements of electrical equipment in hazard area are clarified.The explosion can be avoid only when the explosion proof performance of electrical equipment meets or higher than the requirements of explosive atmosphere.