How we check vector group for a Dyn1 transformer?

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Question Posted / amal

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How we check vector group for a Dyn1 transformer?..

Answer / s.ravindra

The condition of dyn1 was
(a) 1W2N+1U2N=1U1W
(b) 1W2W=1W2V
(c) 1V2W >1V2V

Is This Answer Correct ?

14 Yes

1 No

How we check vector group for a Dyn1 transformer?..

Answer / gunasekaran

we can find out from ratio kit
if applied UV-vn get energised
if applied VW-wn get energised
if applied WU-un get energised

Is This Answer Correct ?

11 Yes

2 No

How we check vector group for a Dyn1 transformer?..

Answer / vinod maurya

We will short 1U & 2U
And we will apply 3 phase voltage between 1U,1V,1W

Measure between
1U-1V
1V-1W
1W-1U
1V-2v
1V-2w
1W-2w
1W-2v
1W-2n
2n-1U

Verify The Condition
1W-2n+2n-1U= 1U-1W
1W-2w=1W-2v
1V-2v<1V-2w

vector group Dyn1 confirmed if the above conditions are
satisfied.

Is This Answer Correct ?

8 Yes

1 No

How we check vector group for a Dyn1 transformer?..

Answer / y.rama krishna

Connect 1U&2U
Apply 3ph 415V balanced voltage across terminals 1U,1V,1W
(HV wdg)
Measure the voltages between the given terminals & record
1)1U-1V
2)1V-1W
3)1W-1V
4)1V-2V
5)1V-2W
6)1W-2V
7)1W-2W
8)1U-2N
9)1V-2N
Verify the conditions
a)1W-2W = 1W-2V
b)1V-2W = 1V-2V
c)1U-1V = (1U-2N)+(1V-2N)
vector group Dyn1 confirmed if the above conditions are
satisfied.

Is This Answer Correct ?

18 Yes

16 No

How we check vector group for a Dyn1 transformer?..

Answer / mahmoud moustafa

The condition of dyn1 was
(a) 1W2N+1U2N=1U1W
(b) 1W2W=1W2V
(c) 1V2W >1V2V
this is correct I check today in one of GE sites

Is This Answer Correct ?

2 Yes

0 No

How we check vector group for a Dyn1 transformer?..

Answer / sakthiyam

i want DdOyn11 conditions

Is This Answer Correct ?

0 Yes

0 No

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