電工機械-短路比 - 考試
By Linda
at 2013-04-01T23:49
at 2013-04-01T23:49
Table of Contents
Ks = 無載時產生額定電壓所需要的激磁電流/ 短路時產生額定電流所需要的激磁電流
= Is / In = 1 / Zs(pu)
此題:額定電流In = 250K / √3*2000 ≒72.17(A)
短路電流由題目已知Is = 90(A)
則: 短路比Ks = Is / In = 90 / 72.17 ≒1.25
※ 引述《NUMB43 (晚了~該睡了)》之銘言:
: http://snag.gy/sIGQr.jpg
: 題目如上
: 短路比 短路電流/額定電流
: 我是算90/125
: 為什麼答案是1.25(D)
: 我一直搞不懂
--
= Is / In = 1 / Zs(pu)
此題:額定電流In = 250K / √3*2000 ≒72.17(A)
短路電流由題目已知Is = 90(A)
則: 短路比Ks = Is / In = 90 / 72.17 ≒1.25
※ 引述《NUMB43 (晚了~該睡了)》之銘言:
: http://snag.gy/sIGQr.jpg
: 題目如上
: 短路比 短路電流/額定電流
: 我是算90/125
: 為什麼答案是1.25(D)
: 我一直搞不懂
--
Tags:
考試
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