日韩一级欧美一级作

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防爆等級

发表时间：2019-04-15 13:08

Ⅰ類：煤礦井下電氣設備；

Ⅱ類：除煤礦、井下之外的所有其他爆炸性氣體環境用電氣設備。

Ⅱ类又可分为ⅡA、ⅡB、ⅡC类,标志ⅡB的設備可适用于ⅡA設備的使用条件；ⅡC可适用于ⅡA、ⅡB的使用条件。

Ⅲ类：除煤矿以外的爆炸性粉尘环境电气設備。

ⅢA类：可燃性飞絮；ⅢB类：非导电性粉尘；ⅢC类：导电性粉尘。

上一篇防爆標准

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