what is the use of the puls transformer in UPS & how it works???????????

0 Answers  

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RATING OF LIGHTENING ARRESTER FOR 11 KV LINE IS 9 KV BUT WE KNOW THAT LIGHTENING ARRESTER IS USED FOR OVER VOLTAGE PROTECTION SO WHY NOT THE RATING OF LIGHTENING ARRESTER BE MORE THAN 11KV ???????????????//

5 Answers   Hakel,

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3. What is Impedance Voltage in Transformer?

16 Answers   KESC, L&T, Torrent Power,

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What is ferrite affects and what is disadvantage of ferrite affects.

1 Answers  

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Is there any problem ,if R-Y-B voltage is constant , but the air compressor taking one phase high current.what is possible causes.the said compressor is very new.(55kw).

4 Answers  

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when the size of the cable used for the ht voltage is 300sqmm then what is the size of the conductor of each phase

2 Answers  

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what is EP panel and AHS panel

2 Answers  

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Why two phase welding machine is used instead of three phase welding machine.

0 Answers   Merck,

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is harmonic useful or it distort the alternating quantity?

2 Answers  

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An 11kv system consisting of an underground cable to a sub station about 300 meters away was shut down for about 10 hrs. On energising, it tripped off on earth fault about 10---20 mins later 6 times but since than it is not tripping.its already 3 weeks now. The SPAJ was found to be fine. what could be the cause.No test had been done to determine the cause of the trippings till now because of demand.

2 Answers  

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What is the range of the stator resistance of 3 phase induction motor?

1 Answers  

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What is MPCB, MCCB, ELCB, RCCB ? Explain them ?

2 Answers  

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