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.

What are the classifications of oscillators?

0 Answers  

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Actuality I have at home electrical panel with 220v 50hz, and I want to converter from there to 110v 60hz, to wiring on the half of my house. Also I like to keep another half of my house with the original 220v 50hz. What is the best and safety way to do?

0 Answers  

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What happen if two protection core (3p) of VT in LAVT are 11kv/root3, 110v/root3 and one protection core (3p) is 11kv/root3, 110v/3

1 Answers  

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to operate air conditioner of 1.5ton what power of generator is required

1 Answers   Bharat,

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List of equipments required foe industrial repair lab.

0 Answers  

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1. what is the power factor of a purely inductive load? 2. Which type of transformer connection is preferred in case of power supply transformers? 3. In power transformer usually which winding is closer to the core? 4. what will happen to the generated emf if the no. of poles of an alternator is increased?

5 Answers  

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what is meant by residual over voltage & residual earth fault ?

0 Answers  

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why conductors of low tensile strength 1)produce greater sag and 2)can not be used for larger spans

1 Answers  

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Explain Need of a starter in a dc motor.? Also explain any two starting and speed control method of dc motor?

0 Answers  

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what is the purpose of reactor in electrical substations ?

2 Answers  

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What is dc induction motor ? and how to control its speed ?

1 Answers   HAL,

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why battery dc voltage become Half when we check with respect to ground for example 120volts + and - terminals and when we check + terminal with Earth thats 60volts why 60volts same result on 24Volts and with ground 12Volts only expert answer that thanks we can not ground the battery.

2 Answers   Etimaad,

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