how to calculate knee point voltage of current transformer?

20 Answers   Bhel, Bhilai, Jackson,

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In a circuit the power factor was leading what will happen?

2 Answers  

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There are Two questions about Steam Turbine Generator... What is HRSG bypass of LP, HP used for in power generation? In particualar, in the event that fault of HP bypass, there would be STG TRIP in operation but none on the LP bypass fault...what's the reason ?

0 Answers  

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What happen if in three phase 440 v , when you check voltage by testor it glows except one phase and in the same time when you check by multimeter it shows 440 v in any two phase.what will be the reason...

1 Answers   Greatship,

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I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum?

0 Answers   Siemens,

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How do you find HT and LT sides of a distribution transformer only by looking at it from outside?

1 Answers   Nespak,

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When measuring the Insulation resistance of a motor winding (winding to earth) using a megger meter, Applied voltage(1000V) was automatically reduced to 500V. and the measured insulation resistance values are also very low (in Kohm range) Can anyone give me a reason???

3 Answers  

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how we can calculate power factor in single phase & three phase ?thank u

0 Answers  

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why insulation cost is more in underground cable than in overhead line?

2 Answers  

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what is the earth resistance ?

5 Answers   Bhel, Cummins,

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what is mean by NPS (Negative phase sequence)fault? what is the difference between EFR & OCR faults?

0 Answers   TNEB Tamil Nadu Electricity Board, Vestas,

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Diff between power trans and generating transformer?

1 Answers  

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