transformer-vector-group-phase-displacement-120.giftransformer-vector-group-phase-shift-0.giftransformer-vector-group-phase-shift-30.giftransformer-vector-group-phase-shift-60.giftransformer-vector-group-phase-shift-150.giftransformer-vector-group-phase-shift-180.giftransformer-vector-group-phase-shift-plus-30.giftransformer-vector-group-phase-shift-plus-150.gif
شكرا جزيلا و بارك الله بكم
شكرا على مرورك مهندس عمر
Procedure of Vector Group Test of Transformer
vector-group-test.gif
Let’s have a YNd11 transformer.
1. Connect neutral point of star connected winding with earth.
2. Join 1U of HV and 2W of LV together.
3. Apply 415 V, three phase supply to HV terminals.
4. Measure voltages between terminals 2U-1N, 2V-1N, 2W-1N, that means voltages between each LV terminal and HV neutral.
5. Also measure voltages between terminals 2V-1V, 2W-1W and 2V-1W.
For YNd11 transformer, we will find,
2U-1N > 2V-1N > 2W-1N
2V-1W > 2V-1V or 2W-1W .
The vector group test of transformer for other group can also be done in similar way.
الذين يشاهدون الموضوع الآن: 1 (0 من الأعضاء و 1 زائر)
ضوابط المشاركة
| ||
|
|
رد مع اقتباس
المفضلات