How we check vector group for a Dyn1 transformer?

Categories >> Engineering >> Electrical Engineering
Suggest New Category

Question Posted / amal

6 Answers
27779 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

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

Post New Answer

More Electrical Engineering Interview Questions

why the generating voltage in India is 11kV or why is it be transmitted as multiples of 11

34 Answers ACC, Bhel, ECI Engineering and Construction, NTPC, SBL, Senthur Power Services,

there are cam operated switches - why we call cam operated , What is cam ?

0 Answers

why ohms law does not obey semi-conducters?

2 Answers

what is the setting of locked rotor in HT motor ? (answer expecting in percentage)

0 Answers

what is feeder bay?

0 Answers

how do using transformer 30 deg lag or 30 deg lead

1 Answers

What if the difference beween internal and exrteranal LBB?

0 Answers

what is grounding & what is the value of groumding rod 2.5m?

3 Answers

What are the test performed on A faulty transformer ?

2 Answers Bhel,

The purpose of a choke is to provide a ?

1 Answers

explain the meaning of harmonic resonance

0 Answers

I am an American living in Vietnam and I have recently gotten a refrigerator from Japan and it is rated for 100 vac, but the power here is 220 so I bought a voltage stabilizer it has a 1 kva output rating. Can you please tell me what the amperage is? I'm confused and without a working fridge.

0 Answers BSL,

For more Electrical Engineering Interview Questions Click Here