Answer Posted / k.prakashchandra

The control circuit is for opening and closing on command.

i have a 4 Mva transformer 34.5 kv / 480-277 v and i used 2 parallel 3200 amp bus duct for the secondary feeder using 3 ply of bus bar ( 3/8" x 5" ) as a common where the flexible link terminated and 6300 amps breaker for the main, the lower bus duct reaches 70 degrees and the upper bus duct reaches 55 degrees when i used thermal scanner. why the temperature is not balance when the load reaches 3600 amps.

1985

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How to select the proper VSD to operate high inertial load

1788

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DIFFERENCE BETWEEN NORMAL TRAFO AND THRISTER TRAFO?

2663

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1600 KVA ka transformer hi aghar lt side par 800A aur voltage 420 ho to HT side ki cable ki rating keya ho gi?

2105

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ACB & VCB how do work and saftes and how can maintenance in this and parts name show with picture

2157

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what is the clear formula to calculate cable size for a load

2023

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We have received supplies of the ordered material. payments against the supplies also released. Where ST paid 4% against form C. Meanwhile it has been observed that 25% of material supplied was defective. Please suggest whether the issuance of C form from our side would be stopped till settlement of liabilities.

1995

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What is conventional thermal current (Ith)

4490

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surge tank, hrc fuse, earthing transformer, firm power objective type

1701

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What is the settings of distance protection relay in 400 kv line

1753

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Why space heater is required for each verical bus bar chamber? if one space heater is adequate or not for anti condensation?

2590

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How many types of interlocking use in screw type air compressor,make-Kaser(BSD MODEL)?

2149

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please forward me the type of questions which would rise while me attending to 33KV Electrical License to my mail ID:vadrevu_raghava@yahoo.co.in

2071

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what is meant by tranformer impedance?

2654

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What is domestic transformer? Draw the connection of domestic transformer.

2357

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