Answer / naresh

The total lighting load of the township is 1870KW and motor
load is 50HP.

We have to load the transformer upto 80percent of
its KVA rating. Because the average power factor has been
taken as 0.8 and to avoid the over loading problem.

So for the township the transformer capacity is as follows.
24x100KVA + 1x63KVA or 15x160KVA + 1x63KVA

Multiple transformers provided instead of few high
capacity transformers to avoid low voltage problem at tail
end.

why heat produced at junction of two different conductor. what care should be taken to minimize it.

11 Answers   Birla, Maihar Cement,

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I want to ask that is there any relation between current denesity of copper and material purity. also is ther any standard which defines the standard current denesity of material.

0 Answers  

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there is a power transformer 66/11kV in delta-delta connection has 5 feeder coming out from the secondary side. One of the feeder in it normally loaded (loaded than other feeder)and this feeder usually trips with double OCR causing the bank transformer to trip. Now if the load of this feeder is put on other transformer then that no problems occurs on that transformer or the load. However normally all the test(IR, PI, short ckt, open ckt,grounding test and other ) has been conducted for this but evertything transformer..... I am not geting what is the actual problem...

2 Answers  

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What are the different pre-commissioning tests that are performed on the distribution transformer, power cable and switchgear (11kv)?

1 Answers   Hitech, Reliance,

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In case of any eventuality, who is your next of kin?

2 Answers   Edison, Foster Wheeler, GE, GE Energy, HP, Infosys, Koch Industries, Roper Industries, Siemens,

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Why PS class CT is always preferred for Differential protection?

0 Answers  

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could mail me the question papers for the test.

1 Answers   ONGC,

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when we increased the current what do ?

0 Answers  

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Uses of induction motor

6 Answers   NTPC,

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what is the effect come when i changed the alternator exciter field winding DC palority(+ve & -ve)which is coming from AVR.

1 Answers   Wartsila,

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whow we find out dc motor field aur armature resistance

1 Answers  

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WILL SCHNEIDER MAKE ACB(MASTERPACT)TRIP ON REVERSE POWER?

0 Answers   Schneider,

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