When we are working on transformer(132\11KV). we are going to isolate the tran

When we are working on transformer(132\11KV). we are going
to isolate the transformer from both HV side and LV side.
then we are applying grounding on both side. My question is
that we required to isolate the VT which is still connected
from secondary side.?

Question Posted / zafar

1 Answers
3060 Views
I also Faced
E-Mail Answers

When we are working on transformer(132\11KV). we are going to isolate the transformer from both HV..

Answer / binod

YES ,IT IS REQUIRED TO ISOLATE LINE VT IN SECONDARY
SIDE,BEACUSE BEFORE CHARGING THE TR. WE MUST MEASURE THE
INSULATION VALUE BY MEGGER
INSULATION VALUE TAKEN IN FOLLOWING MANNER
1)PH(HV)TO EARTH(EARTH CONNECTION REMOVED FROM TR. EARTH
BUSHING)
2)PH(LV)TO EARTH(IN THIS TEST THE LINE PT ISOLATED FROM THE
CIRCUIT OF LV SIDE OTHERWISE THE VALUE IS ZERO)
3)PH(PRIMARY)TO PH(SECONDARY)
4)CONTINUTY TEST BETWEEN PHASES OF LV(R Y B)&HV(RYB)

Is This Answer Correct ?

1 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

i need project topics along with circuit diagram in the electrical and electronics engg and also some websites regarding projets.

2 Answers

what are the installation procedure of high voltage power transformer,CT,CB&PT?

0 Answers Siemens,

Why should be the frequency 50 hz 60hz only why not others like 45, 95 56 or anything , why should we maintain the frequency constant if so why it is only 50 hz 60hz?

0 Answers

1. What kVA rating is required for a transformer that must handle a maximum load current of 8 A with a secondary voltage of 2 kV?

3 Answers BCPL,

How to calculate loses in transformer of 160 KVA ?

0 Answers IDV,

How do you convert the lt amps on a transformer to the ht amps?

2 Answers

hi how are you? i m in walchand college of engg. do you have interest in join me through email so send your email id

0 Answers

hii.i am a B.TECH(EEE) graduate.i want 2 know wat type of qusns r asked in sbi clerk interview 2 candidates like me??kindly post answers ASAP..

1 Answers

Why and when NGR panel required. Is it necessary to design a NGR panel for a 6.6kV Alternator paralleling with Grid????

0 Answers

can HT cable or HT bare conductor used for LT line? is yes what would be the current rating?

2 Answers ACC, wbsedcl,

why we are called the 4-20ma transducer,not 0-20 ma transducer??

3 Answers

how does the terminal voltage of transmission lines increase when a capacitor is connected???? This happens not only in transmission lines but also in all circuits. How??? When a capacitor is connected in a transmission line, capacitor also takes energy from the same supply. But how is it able to increase the terminal voltage??? Practically What sequence of events happen during increase in voltage???

0 Answers

For more Electrical Engineering Interview Questions Click Here