防護(hù)等級(jí)和防爆等級(jí)的說明：防護(hù)等級(jí)說明： IP（INTERNATIONAL PROTECTION）防護(hù)等級(jí)系統(tǒng)是由IEC（INTERNATIONAL ELECTROTECHNICAL COMMISSION）所起草。IP防護(hù)等級(jí)是由兩個(gè)數(shù)字所組成，第1個(gè)數(shù)字表示離塵、防止外物侵入的等級(jí)，第2個(gè)數(shù)字表示防濕氣、防水侵入的密閉程度，數(shù)字越大表示其防護(hù)等級(jí)越高，兩個(gè)標(biāo)示
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2011年4月29日
防護(hù)等級(jí)和防爆等級(jí)的說明
Tags: 防護(hù)等級(jí)說明 防爆等級(jí)說明
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