TO operate transformers in parallel, vector symbol of the both should be same.

TO operate transformers in parallel, vector symbol of the
both should be same.If one transformer name plate is not
there, how can we conclude that whether the transformer is
having the same vector symbol or not?

Question Posted / ravikumar josyula

4 Answers
7836 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

TO operate transformers in parallel, vector symbol of the both should be same.If one transformer n..

Answer / guru

Check the vector group by carrying out VECTOR Group testing
( By Injecting a 3 Ph 440v or 230 V to the primary windings
and check the voltage between the terminals in secondary
side)

For each vector group there are standard values which has
to come in the secondary side

Is This Answer Correct ?

1 Yes

0 No

TO operate transformers in parallel, vector symbol of the both should be same.If one transformer n..

Answer / rajendran

we can easily find out and confirm the vector group of the
transformer by using the standard test procedures.

Is This Answer Correct ?

3 Yes

3 No

TO operate transformers in parallel, vector symbol of the both should be same.If one transformer n..

Answer / mgalalkhedr

This vector group test is done at site to check if their is
any damage in the windings during transportation and
erection.
3 -phase AC supply is given on HV side. R-Phase HV and r-
phase LV shorted.

Then to qualify the test following conditions are to be
satisfied after measurement of voltages.

nR+nY=RY, By>> Bb and Yb=Yy.

Is This Answer Correct ?

0 Yes

0 No

TO operate transformers in parallel, vector symbol of the both should be same.If one transformer n..

Answer / mahboob

in such acase we can find the vector group by conducting
vector group test the we can proceed

Is This Answer Correct ?

1 Yes

2 No

Post New Answer

More Electrical Engineering Interview Questions

can we use ELCB and RCBO in one db

6 Answers

How many kw will suply from one db

0 Answers

what will happen at the time of CT saturation?and what will be the Relay's function at the time of CT saturation?

2 Answers

why we remove capacitor connection in 3 ph Induction Motor while taking noload test.

7 Answers Aditya Birla,

What are the applications of different multistage amplifiers?Plz also write advantages of these amplifiers? Thaaaaaaaaanx

0 Answers

why various test are performed on electrical panels & power cables before commissioning on site & what are these test???

0 Answers Lavasa,

What is effect of harmonic current (Draw by VFD) on power system/ electrical Equipments ?

0 Answers

i am electrical and elctronics engg passed out in 2009 want to attend for reliance placements.plz send me apttitude ,technical and hr question answers to my mail plz. my mail id-kat.bindas@gmail.com

0 Answers

1.stranded resistance values of motors? 2.how to calculate the resistance values of single phase and 3phase motors?

2 Answers Bell, L&T,

I need to connect a synchronous generator to the grid using automatic synchronization and two circuit breakers (one for synchronization, one for end connection to the grid), how to determinate the required diameter of the cables?

0 Answers

In a company the lines carrying 33KV but the load is below 10000Volts so we know that <11KV we can put 11KV lines but the lines are 33KV,..so how we can step down the voltage to 11KV with out erecting a substation

1 Answers

Can HT cable(11kv cable) be used for 415V, 700A requirement.

5 Answers

For more Electrical Engineering Interview Questions Click Here