How to take Vector group test of Transformer?
Answers were Sorted based on User's Feedback
Answer / ambrish
Pl. show the standard formula to check vector group tst for
any type of transformer.
Is This Answer Correct ? | 3 Yes | 0 No |
Answer / tansford
Superimpose the HV & LV vectors with 1U & 2U as common it
clearly shows the relation between the phasors
Every vector group will have a different relation &
equation to be evaluated
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / raj_singh_0376
Procedure of vector group test of transformer
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 415V, 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
Is This Answer Correct ? | 1 Yes | 1 No |
Answer / ponnudura
can anyone say me hoe to draw vector group and what is the
use of different vector group and its application plz
Is This Answer Correct ? 17 Yes 8 No submit
srinivas
Answer
# 8 1.1U1V1W-which is primary -Delta Connection
2.2U2V2W- Which is secondary-Star connection
3.join 1U& 2U terminals
4.Supply 1U-1V-1W 440v Measured
a.1U-1V
b.1V-1w
c.1W-1U
d.1W-2W
e.1V-2W
f.1V-2V
g.1W-2V
h.1U-2N
i.1V-2N
TO CHECK
1.1V-2W=1V-2V
2.1W-2V>1W-2W
3.1U-1V=1V-2N+1U-2N
From above check(1,2) the vector group of transformer is
verified
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / balaji
1) Can i know why we are making short of any phase during vector group test ?
for Example R-r,Y-y Like that
2) while doing the vector group why the neutral earth should be removed ?
Is This Answer Correct ? | 0 Yes | 0 No |
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