Answer / umair

What do you mean by LAS?

WHAT IS MEANT BY DERATING OF THYRISTOR?

0 Answers   TATA, Trane,

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our factory is going under construction mean time transformer 1000 kva 2 nos &load break swithch 12 kv & 4 nos 750 kva 2 nos & 380 kva 2 nos generator to be errcted.how to arrange earth pits &how to earth connect & neutral pit how to calculate in earth bit size.

0 Answers  

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why we decide alternating wave form in ac system and not in dc system

2 Answers   GMR,

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what is the difference b/c choke and ballast?

1 Answers  

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May I know how much values to be set for earth fault, over current and short circuit values at 11kv side? I have 11kv van 1250amps rating. Present it's taking load 80amps?

0 Answers  

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why ct is testing using dc.. y cant we use AC insted of dc on POLARITY TEST.

6 Answers  

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whatis knee point ?

5 Answers   L&T, Siemens,

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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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Reversal of corrent feature in MCCB- What is reversalof current -explain broadly.

1 Answers  

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How to increase the specific gravity of DG batteries?

5 Answers   SCS,

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Will it be OK to connect a 5MVA 33/6.6kV Ynd11 Transformer to a Star connected Motor. Or on other words connecting a Delta to a Star. I have another 30MVA 33/11 Dyn11 and would it be practical to convert it to Dd0 consequently converting the Voltage Ratio to 33/6.35kV Dd0.

1 Answers  

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what will be happen if we apply D.C supply to the transformer

14 Answers   CCBPL,

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