Hi, i want to know is meant by power quality? How it can calculated ? How we can improve?

1 Answers  

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What is the effect on power factor, shown by a trivector meter; incase of reverse phase sequence. If the power factor of a system is lag what meter will show in case of reverse phase sequence connected to the meter. and What in case of lead.

0 Answers   TATA,

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how to select a circuit breaker?

24 Answers   ABB, BARC, TCS,

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What is DPR relay, And what for??

2 Answers   Engro,

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What is the maximum percentage voltage drop (vd%)for a motor control center

0 Answers  

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I want Primary side delta and Sec side Star connection transformer . but i have received Star - Star transformer ,shall i use the same transformer by giving the only 3 ph on Primary side without Neutral connection on the Starpoint.

5 Answers  

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how to select the power contactor in Diffrent AC motors.

6 Answers   Titan,

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Dear Friends, Need your help for connecting APFC panel, Quotation : I have 2 No’s 1000 KVA Transformers, both transformers are having separate APFC panels, ( Tr-1,400KVAR, TR-2,450 KVAR) Now I want to stop One transformer, present load is 650Amps, Max, So One transformer is enough, I have switched OFF TR-1, but PF is not maintaining properly, its 0.5, So now I want to connect TR-2 APFC also in TR-1 Loads, Can any one answer for my Quotation with drawing, how to connect TR-2 APFC panel in TR-1 Loads,

4 Answers   L&T,

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hi friends can u tell me name of the sites where i can get animation of electrical machines......

1 Answers  

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Which supply is using for train AC or DC & what is the voltage????????

16 Answers  

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HOW TO IDENTIFY THE RELAYS WHICH APPLICATION IN WHICH RELAY USING?

1 Answers   L&T,

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why transformer rating is given in kva?

2 Answers  

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