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Generally In transformer Tap Changer on HT side, but I have
seen in 66KV side in 220/66 KV, 100 MVA, Areva make
transformer. Why ?

Question Posted / dharmendra.prp

Answers were Sorted based on User's Feedback



Generally In transformer Tap Changer on HT side, but I have seen in 66KV side in 220/66 KV, 100 MV..

Answer / ajay kumar

Maximum tap changer connected in HT side because due to
high voltage current level will be low and during operation
of OLTC low current will pass and there will be less risk
to operate on load

Is This Answer Correct ?    4 Yes 0 No

Generally In transformer Tap Changer on HT side, but I have seen in 66KV side in 220/66 KV, 100 MV..

Answer / prodip kr. paul

The purpose of OLTC is to regulate the output voltage
constant as per rating plate, but the incomer supply
voltage is variable in kind, so as per incoming supply
voltage the winding turns are selected according to voltage
per turn designed by maker and as per available incoming
voltage incoming side of transformer winding turns are
selected, means OLTC fitted in primary side, it may be LV
or HV side.

Is This Answer Correct ?    2 Yes 0 No

Generally In transformer Tap Changer on HT side, but I have seen in 66KV side in 220/66 KV, 100 MV..

Answer / latika

Where tap changing in the primary may hamper other
equipments there tap changing in the secondary is preferred
in power transformer.

Is This Answer Correct ?    2 Yes 1 No

Generally In transformer Tap Changer on HT side, but I have seen in 66KV side in 220/66 KV, 100 MV..

Answer / intekhab

it is depends on where it is used. if 66kv is in grid side
then it must have to be controlled in 66kv side.

Is This Answer Correct ?    1 Yes 0 No

Generally In transformer Tap Changer on HT side, but I have seen in 66KV side in 220/66 KV, 100 MV..

Answer / gaurav

Check again it will be in Ht
side only.

Is This Answer Correct ?    1 Yes 0 No

Generally In transformer Tap Changer on HT side, but I have seen in 66KV side in 220/66 KV, 100 MV..

Answer / gunasekaran

1.conductor size is less
2. from oltc reactive power compensation is compensate the
line loss

Is This Answer Correct ?    0 Yes 2 No

Generally In transformer Tap Changer on HT side, but I have seen in 66KV side in 220/66 KV, 100 MV..

Answer / kesaavan

Both sides are ht (py and sy).thats why they are fix
tapchanger in sy side.

Is This Answer Correct ?    1 Yes 12 No

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