Answer / kannu

current and voltage transformers both are based principle
of as transformers.it used for step down the voltage and
current to measure the electrical energy .
There is a ratio to identity the CT and PT.

pt ratio :100/1 etc.....
ct ratio :100/5 etc....

What is the mulplying factor of trivector meter (11kv) having ct ratio 100/5 amp.

2 Answers  

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why dc series motors never start without some load, and what will happen if starting with out load..

1 Answers  

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Why consider motor rpm to select capacitor for motor

1 Answers   KSEB,

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Why we use duplex coil and hook switch in telephone system?

0 Answers  

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Sir,In our company there are 3 caterpillar make(capacity:(1) 3.3KV,2.5MW(2)3.3KV,2.5MW & (3)3.3KV,1.9MW) & 1 deutz make (capacity:11KV,3.8MW)gas engines utilised,all are running in paralell. There are three transformer utilised,(1) 6.25MVA,3.3KV/22KV,Impedence voltage:6.7% used for two generator,both are 2.5MW(2)5.5MVA,3.3KV/22KV,Impedence voltage:7.2% used for one generator of 2.5MW & (3) 5.5MVA,11KV/22KV,Impedence voltage:7.8% used for one generator of 2.5MW.all generator breakers capacity of 1250Amps. Sir,I want the details of fault level calculation of generator,transformer individually & for whole system. If you require any information from me.feel free for contact me sir.pl.send the answer of my question as the earliest as possible.

0 Answers   Piramal Healthcare,

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what is corona effect?

39 Answers   ABB, Genco, Wipro,

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Define phase cross over?

0 Answers  

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What is excitation?

2 Answers  

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difference bewteen reverse current and alternating current

0 Answers   ABB,

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We have two 1 phase heating coils having same resistance of 25ohm, but during operation one takes 3A and other 6A Is it posiible Pls. explain

5 Answers   Bhel,

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what is impedance?

1 Answers   PWD,

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How select ELCB for 32amp. socket having quantity 12Nos. We have to do this wiring in PLANT. Please Also explain the incoming cable specification.

0 Answers   Gulf Industrial Services Company GISCO,

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