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发表于 2013-5-20 09:22
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bob_dai 发表于 2013-5-20 01:04 ![](static/image/common/back.gif)
/ e, {$ O7 `% `4 ?6 t请自己实践一下!!9 I! u/ Z, m& O# x& {3 e, ~, F4 g( z
另外我想强调的是B点根本就不是接保护地的点,所以不可能把他的电势作为参考地电位。 ... % a4 z8 C1 j, v1 q, l0 w" |
请参考标准13.2,这段话应该如何解释呢?
8 Y. Q; \) H! `9 Z0 O如果绕组线绕制的组件或其它零部件是浮地的,即不与相对于地有确定电位的电路连接,则应
5 `, L* U9 w' Q) v4 q) }3 C( D j当假定该组件或零部件接地是在能获得最高工作电压时的该接地点接地;where a wire-wound component or other part is floating, i.e. not connected to a circuit which establishes its potential relative to earth, it shall be assumed to be earthed at the point bywhich the highest WORKING VOLTAGE is obtained;# K, |+ U! z" P" R8 j' [; Q
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