21. What is the purpose of taking Capacitance and Tan Delta Test in Tr

21. What is the purpose of taking Capacitance and Tan Delta
Test in
Transformer bushing?
22. What are the protections to be used for Generator?
23. Draw the vector diagram and condition for the
following: 1) Dyn1
2) Ynd0 3) YnYn0
24. What happens when the polarity changes in CT? Explain
briefly?
25. Explain the Term in CT Name Plate – Class: 5P10

Question Posted / senthil

3 Answers
9644 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

21. What is the purpose of taking Capacitance and Tan Delta Test in Transformer bushing? ..

Answer / prasad

Tan DELTA TEST TO FIND THE Dielectric losses

Is This Answer Correct ?

5 Yes

4 No

21. What is the purpose of taking Capacitance and Tan Delta Test in Transformer bushing? ..

Answer / raul

-it is done for insulation testing i.e. to measure the loss
angle.........
-merz price circulating current scheme (i.e. differential
protection), balanced earth fault protection, protection
against unbalanced loading which leads to negative sequence
currents........
-not possible to draw in this format........
-no change will occur if the polarity is changed bcoz it is
independent of the polarity
-class 5 and VA rating is : 10

Is This Answer Correct ?

0 Yes

0 No

21. What is the purpose of taking Capacitance and Tan Delta Test in Transformer bushing? ..

Answer / naresh

Pole slipping,backup protection,differential,dead machine
protection,low forward power,voltage control over
current,current control over voltage,df/dt,if ct polarity
chenge in protection reverse active power flows to relay
and diff current flow and in metering import power wil show
in energy meter,for five times of primary current 10%
composite error.

Is This Answer Correct ?

0 Yes

7 No

Post New Answer

More Electrical Engineering Interview Questions

What is the advantage of Neutral graunding transformer insted of Neutral graunding Resistance in generating station explain briefly.

2 Answers

What is the principle of HIGH SPEED DIRECT DRIVE MOTOR ?

0 Answers Honeywell,

in three pin plug 6 Amp. 220v AC rating. why earth pin diameter is higher than ohter two pin? what its purpose ?

6 Answers

what is EP panel and AHS panel

2 Answers

what are the various parts of airconditioning system used in train and its working

1 Answers

If one tertiary phase i.e. R,Y or B is earthed of a loaded type tertiary delta connected (Without load)of a power auto transformer, what is its advantage/disadvantage?

0 Answers Amara Raja,

What is a circuit breaker contact multiplier relay?

2 Answers

1 HP = how many kw

9 Answers

Can I use 1 phase power supply to run 3 phase motor? If yes, how?

6 Answers

if the load is 80 amp for main fuse and 100 amp for breaker so how can we calculate the cable size (cooper ) .

0 Answers Bhel,

difference between moore and mealy model

2 Answers Google, IBM, TCS,

How does solar power system work?

1 Answers

For more Electrical Engineering Interview Questions Click Here