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1.3.2DI模塊施耐德140DDI35300

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在確定儀器儀表眾多時我們常常遇到防護等級IP這一，那么何為防護等級以及它后面的數(shù)字代表什么呢？下面為大家作些介紹以方便大家在工作中查閱和參考。防護等級IP（INTERNATIONAL PROTECTION）是由IEC組織起草和制定的。該將儀器儀表依其防塵、防濕氣等特性加以分級。IP防護等級是由兩個數(shù)字所組成，第1個數(shù)字表示儀器儀表和電器離塵、防止外物侵入的等級，第2個數(shù)字表示儀器儀表和電器防濕氣、防水侵入的密閉程度，數(shù)字越大表示其防護等級越高。

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