Answer / ajay

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

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.

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 ,

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.

Answer / rakesh

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

If a shunt Dynamo has induced emf 100V and 0.4 ohm resistance and battery of accumulator of open circuit emf 110V and 0.5 Ohm resistance are in parallel what is common terminal potential difference?

0 Answers  

Is it possible to import & export power through the same power transformer? what will be the vector group normally for both different or same?

1 Answers  

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2 Answers  

In ac which gas will be use?

2 Answers  

what do you call the last pole on a overhead line near a substation

2 Answers  

Explain bypass capacitor?

0 Answers  

What is the function of lead sheath?

2 Answers  

why earthing point in the 6amps/16amps socket bigger than the remaining (Phase & Neutral)points.

1 Answers  

WHICH TYPE OF TRANSFORMER USED IN SWITCHYARD IN POWER PLANT?

15 Answers   GE, Lanco, NTPC,

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3 Answers  

ELECTRICAL MACHINE

2 Answers   Bhel, HPC, NHPC,

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1 Answers   Siemens,