Answer / imran abbas

THE CURRENT THAT PRODUCE IN THE CORE DUE TO CUTTING OF
MAGNETIC LINES OF FORCES,FOR REDUCING OR DECREASING THIS
EDDY CURRENT A LAMINATED CORE IS USED,AS WE SEE IN
TRANSFOMER THE WINDIND ARM ARE NOT IN SOLID BODY,IT IS MADE
WITH LAMINATED IRON PIECES AND ALL THESE PIECES ARE
INSULATED EACH OTHER

Answer / d c

Eddy currents are nothing but a type of circulating current that is generated basically due to the presence of the leakage flux (the flux that does not linked with the main core) supplied by the source current.

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I hv a question regarding power factor improvement just after transformer. I request you to reply me plzz. thank you sir. My friend has a small unit of fabrication. in his factory the main load is a welding machine, lathe machine, grinding machine. this load is not continuous type. now our electricity board has installed 16 KVA, 11000/433 V transformer for our factory. In the energy meter (trivector meter) at LV side of transformer, i hv seen power factor value of 0.15 only when only 3 KW load was flowing. Further electricity board has suggested to install 4 KVAR capacitor at LV side after energy meter. Now my question is that if we permanantly install and switch on 4 KVAR capacitor after energy meter, during some load on transformer and also without any load on transformer, wht will be the power factor shown in energy meter?i dont want to get any penalty by electricity board, so plz suggest me if i can permanantly install and switch on the 4 kvar capacitor or not at LV side of transformer just after energy meter? Thank you again and awaiting for ur positive reply soon.

9 Answers  

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