I decided to provide a 11KV / 440V Xformer in my Substaion. What are the prote

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I decided to provide a 11KV / 440V Xformer in my Substaion.
What are the protection required for that?

Question Posted / nishad

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I decided to provide a 11KV / 440V Xformer in my Substaion. What are the protection required for t..

Answer / ajay

for H.V side u can use R.M.U whc include SF6 C.B and For LT
side ACB

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4 Yes

3 No

I decided to provide a 11KV / 440V Xformer in my Substaion. What are the protection required for t..

Answer / nirajan poudel

11000/440v means it is step-down transformer.so, for MV
side use 9kv LA,11 kvDO-FUSE and switch gear panel which
includes VCB which is used for isolating the transformer
during maintenance period.For LV side use TP MCCB for 3-
phase bus bar(R,Y,B) and use SP MCCB for 1-phase bus
bar.And there must be provision for AMF (Automatic Main
Failure Panel) to change the supply from main line to stand-
by generator and vice-versa with respective CB tripped.

Is This Answer Correct ?

1 Yes

0 No

I decided to provide a 11KV / 440V Xformer in my Substaion. What are the protection required for t..

Answer / ajay pal

transformer are to be fully earthed ,neutral grounding
resistor are to be provided, transformer overhead
differential protection , transformer oil for cooling is
very necessary ,

Is This Answer Correct ?

1 Yes

0 No

I decided to provide a 11KV / 440V Xformer in my Substaion. What are the protection required for t..

Answer / doli tomar

11000/440v means it is step-down transformer.so, for MV
side use 9kv LA,11 kvDO-FUSE and switch gear panel which
includes VCB which is used for isolating the transformer
during maintenance period.For LV side use 4P ACB /MCCB for
3-
phase bus bar(R,Y,B) and use overcurrent, overvoltage,
undervoltage,IDMT,Single phase preventer,restricted earth
fault relay because Relays are used where it is necessary
to control a circuit by a low-power signal (with complete
electrical isolation between control and controlled
circuits), or where several circuits must be controlled by
one signal.

Is This Answer Correct ?

0 Yes

0 No

I decided to provide a 11KV / 440V Xformer in my Substaion. What are the protection required for t..

Answer / rakesh

Transformer Secondary star neutral need to be earthed.
Separate earthing pit need to be provided.

Is This Answer Correct ?

3 Yes

6 No

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