Can anyone explain how the vector diagram of a transformer which doesn't

Can anyone explain how the vector diagram of a transformer
which doesn't have name plate be found whether it is
Dy11/Dy5/Yd11 and so on?

Question Posted / skrnoopuram

4 Answers
10995 Views
TATA, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

Can anyone explain how the vector diagram of a transformer which doesn't have name plate be f..

Answer / geno peter

well , we can find the vector group by doing vector group
test

Is This Answer Correct ?

13 Yes

1 No

Can anyone explain how the vector diagram of a transformer which doesn't have name plate be f..

Answer / loke

Ya ! first of all you can decide Yd or Dy by seeing it
primary & secondary connections and 1,2,3....11 we can
decide it by doing vector group tests int that we can check
phase shift of wave form & we can conclude

Is This Answer Correct ?

7 Yes

0 No

Can anyone explain how the vector diagram of a transformer which doesn't have name plate be f..

Answer / k.prakashchandra

Whether Dy or Yd can be ascertained from the bushings.To
find particular vector group ,CRO can be used finding
relationship between the current vectors.e.g.In Dy 11 I2R
lags I1R by 30 degrees Number 11 denotes position of minute-
hand in a clock.It can also found out by taking various
voltage measuremnts and analysing

Is This Answer Correct ?

7 Yes

0 No

Can anyone explain how the vector diagram of a transformer which doesn't have name plate be f..

Answer / kalidass

Yah! can.
If Dy11
Primary winding having only 3 terminals with high
resistance and secondary havign 4 terminals with low
resistance.

If Yd11
Primary having 4 terminals with high resistance and
secondary having 3 terminals with low resistance.

If Dy5
This is not a verctor group.

Eppdi???

Is This Answer Correct ?

8 Yes

30 No

Post New Answer

More Electrical Engineering Interview Questions

what is static excitation and dynamic excitation of synchronous generator,scr excitation is a brush or brushless excitation?

6 Answers

Hi,I am working in abroad for more than 3 years in a company operating with 11kv and 6.4 MW power. I need c licence in India,can I? some other says only i can get if i work for 2 years in india only! anybody kindly clarify by doubt.Thanks

0 Answers

How to megger test 11 kV cable and the acceptance IR value

0 Answers BVG, NFL, ONGC,

If i=10+10sin314t then find the rms and average value of current with explain?

2 Answers Heptacare, TCS,

what is use of capacitor in fan

8 Answers ABB,

diff b/w elcb and rccb

0 Answers

Dear sir, How to calculate 3.5 core pvc aluminium armoured cable meter wise carrying amps rating.Please give the solution with a good example.

0 Answers Modi Builders,

what is the difference between Ith & Iu rating in MCCB. Particularly on SACE ABB Circuit Breaker?

2 Answers Siemens,

what is the meaning of vcc

0 Answers

In three pin socket normally three pin in between three pins earthing point is more thickness why?

6 Answers

When calculation of fault current and fault Kva is to be done,why always we use per unit value and why we consider the base kva?

0 Answers

What are locations arc protection relay is fixed.

0 Answers KSEB, L&T, Siemens,

For more Electrical Engineering Interview Questions Click Here