Sir, plz tell me the relation b/w KW and frequency in Variable frequency Drive?

2 Answers  

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At site, we have 30Kw motor (3 phase, 400V,50Hz) and FLC 54A as per the nameplate. At the time of starting it draws 840A instead of 390A (7.2%). As per the data sheet also its 390A starting current. it thru a dol starter from the MCC. can anyone tell what is the problem in the motor

5 Answers   ME,

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what are the basic concept to design a out door Substation?

1 Answers  

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How you will determine the volume of oil in a particular Distribution transformer.

0 Answers  

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No load efficiency of transformer is ___________ than full load efficiency

2 Answers   PGCET,

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What are conduct on the testing in cf in ur site?

0 Answers  

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An AC Motor to give DC supply what happen the motor.whats the problem are create.

2 Answers  

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HOW DO A DISTANCE RELAY SENSES THE FAULTY ZONE.

5 Answers  

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if negative of DC supply used and positive is grounded through EGB, and if ELCB used in the system then is it sense the positive volatge and get tripped is it possible?

0 Answers   Delta,

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In Transmission System if the potential difference at the two end of line are same then is the transmission of power will continue ? if yes then how.

1 Answers   IOCL,

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Is there any problem about which the drive (inverter) doesn't show/display the alarm and/or fault but instead of this , it doesn't work ? I want to know that could there be any kind of problem in the drive when the drive doesn't display the alarm and/or fault ?

0 Answers   Siemens,

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what is the difference b/w KVA and KW? the transformer are mentioned KVA rating and the loads are mentioned KW.why?

2 Answers  

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