What type of isolation transformer used in UPS's?? It's Star-Delata Or Delata-Star????Why it is used????

6 Answers   Emerson,

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when we design electrical schemes of 11/.415kv distribution..wen and were should we show the relays??what is the function of it?for example..we place EFR Relay CT between transformer neutral link and transformer earth.Like this what are the other type of relays we should use?why?where?Explain please..Thank you

0 Answers   ETA,

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What are various power system instabilities and what are their effects on power system operation?

1 Answers  

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in most industies hormonics present up to some level. what is limit ? and there effect?

4 Answers   Bhel,

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Megar test tell sufficient resistant

1 Answers  

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what is the procedure for three phase motor differential relay testing can it do with single phase test kit?

1 Answers   ABB,

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How to connected to energy meter, pt, ct, ammeter, voltmeter and selector switch.

1 Answers   Omplas,

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Why primary batteries not rechargeable and secondary batteries are rechargeble??? If any one know please send me.

1 Answers  

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what is current

53 Answers   Bio Enterprises, CLG, TCS,

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Suppose am having the PF value .8, so how can we say that is it lagging or leading?

11 Answers   Bhel,

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working

1 Answers  

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Why HT 11 KV Slipring Motors are connected in star ?

0 Answers  

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