引用第3楼robin111于2008-06-02 19:13发表的 :2 Z2 l& B7 V) X7 f/ N7 W
是不是可以这么理解,supplementary 绝缘是不能独*立存在的: 只有在basic 绝缘存在的情况下,才存在supplementary 绝缘的概念?
引用第7楼liao_yl于2008-06-04 09:01发表的 :
R/I: "A single insulation system which provides a degree of protection against electric shock equivalent to D/I under the conditions specified in ehis standard."变压器中使用的三层绝缘线应该就是这种了~~
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