請求 電機機械高手幫解 - 國營工作討論
By Odelette
at 2014-08-24T13:54
at 2014-08-24T13:54
Table of Contents
※ 引述《bug09182001 (小傲雪)》之銘言：
: 題目出自:97年地方三等特考
: 題目內容:有三個單相50kVA,2300/230V,60HZ變壓器
: 連接成一組三相4000/230V變壓器.已知每一相變壓器換算至低壓側之阻抗為0.012+j0.016
: 而其鐵損及磁化電感不計,假設此三相變壓器供給120KVA,230V,0.85滯後功因之三相負載,
: 試求其高壓側線電流與線電壓.
: 求詳解...有想一起討論電機甲的可加我LINE bug09182001 謝謝
Sbase=120 kVA
Vbase=230 V
Zbase=230^2/120k =0.4408
Zline=0.012+j0.016= 0.02 (53.13 degree) = 0.045 p.u (53.13 degree)
I = 1 p.u. (-31.79 degree)
V = 1 + 0.045 (53.13) * 1 (-31.79)
=1+0.045 (21.34)
=1.042+j0.016
=1.042 (0.88 degree)
I(高壓側線電流)=120k/sqrt(3)/4000=17.32 A
V(高壓側線電壓)=1.042*4000=4168 V
敬請指正
--
: 題目出自:97年地方三等特考
: 題目內容:有三個單相50kVA,2300/230V,60HZ變壓器
: 連接成一組三相4000/230V變壓器.已知每一相變壓器換算至低壓側之阻抗為0.012+j0.016
: 而其鐵損及磁化電感不計,假設此三相變壓器供給120KVA,230V,0.85滯後功因之三相負載,
: 試求其高壓側線電流與線電壓.
: 求詳解...有想一起討論電機甲的可加我LINE bug09182001 謝謝
Sbase=120 kVA
Vbase=230 V
Zbase=230^2/120k =0.4408
Zline=0.012+j0.016= 0.02 (53.13 degree) = 0.045 p.u (53.13 degree)
I = 1 p.u. (-31.79 degree)
V = 1 + 0.045 (53.13) * 1 (-31.79)
=1+0.045 (21.34)
=1.042+j0.016
=1.042 (0.88 degree)
I(高壓側線電流)=120k/sqrt(3)/4000=17.32 A
V(高壓側線電壓)=1.042*4000=4168 V
敬請指正
--
Tags:
國營
All Comments
By Sierra Rose
at 2014-08-26T21:10
at 2014-08-26T21:10
By Emma
at 2014-08-29T04:26
at 2014-08-29T04:26
By Kelly
at 2014-08-31T11:43
at 2014-08-31T11:43
By Audriana
at 2014-09-02T18:59
at 2014-09-02T18:59
By Belly
at 2014-09-05T02:15
at 2014-09-05T02:15
By Faithe
at 2014-09-07T09:31
at 2014-09-07T09:31
By Oliver
at 2014-09-09T16:47
at 2014-09-09T16:47
By Ivy
at 2014-09-12T00:03
at 2014-09-12T00:03
By Selena
at 2014-09-14T07:19
at 2014-09-14T07:19
By Lily
at 2014-09-16T14:35
at 2014-09-16T14:35
By Faithe
at 2014-09-18T21:51
at 2014-09-18T21:51
By Erin
at 2014-09-21T05:08
at 2014-09-21T05:08
By Leila
at 2014-09-23T12:24
at 2014-09-23T12:24
By Lydia
at 2014-09-25T19:40
at 2014-09-25T19:40
By Rosalind
at 2014-09-28T02:56
at 2014-09-28T02:56
By Annie
at 2014-09-30T10:12
at 2014-09-30T10:12
By Jacky
at 2014-10-02T17:28
at 2014-10-02T17:28
By Joseph
at 2014-10-05T00:44
at 2014-10-05T00:44
By Oscar
at 2014-10-07T08:00
at 2014-10-07T08:00
By Necoo
at 2014-10-09T15:17
at 2014-10-09T15:17
By Hedy
at 2014-10-11T22:33
at 2014-10-11T22:33
By Charlotte
at 2014-10-14T05:49
at 2014-10-14T05:49
By William
at 2014-10-16T13:05
at 2014-10-16T13:05
By Zenobia
at 2014-10-18T20:21
at 2014-10-18T20:21
By Queena
at 2014-10-21T03:37
at 2014-10-21T03:37
By Lucy
at 2014-10-23T10:53
at 2014-10-23T10:53
By Susan
at 2014-10-25T18:09
at 2014-10-25T18:09
By Edward Lewis
at 2014-10-28T01:25
at 2014-10-28T01:25
By Enid
at 2014-10-30T08:42
at 2014-10-30T08:42
Related Posts
中油雇員女生
By Wallis
at 2014-08-24T03:34
at 2014-08-24T03:34
請求 電機機械高手幫解
By Franklin
at 2014-08-23T23:28
at 2014-08-23T23:28
抉擇
By Barb Cronin
at 2014-08-23T13:19
at 2014-08-23T13:19
抉擇
By Dorothy
at 2014-08-23T11:22
at 2014-08-23T11:22
國營聯招電路學請教
By Harry
at 2014-08-22T23:28
at 2014-08-22T23:28