106普考輸配電學 - 普考

By Erin
at 2018-05-28T00:46
at 2018-05-28T00:46
Table of Contents
http://imgur.com/gallery/jvrQrXc
請問為什麼是兩倍的Zs?
我認為220V是單相接地故障,應該是1倍Zs+ 1倍Ztr
請高手指點.謝謝
這題其他步驟都會寫..就上面算錯
--
請問為什麼是兩倍的Zs?
我認為220V是單相接地故障,應該是1倍Zs+ 1倍Ztr
請高手指點.謝謝
這題其他步驟都會寫..就上面算錯
--
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普考
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