Answer Posted / tahir

Distance Protection Relay

If we use 250A MCCB as a incomer in Control panel for a fault level of 50kA for one second ,assuming temperature rise from 85 Deg. to 100 Deg , Then what will be the Aluminium Bus-bar size for 250A MCCB? Explain in detail.

2350

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Why slip ring ind. motor power consumption is low compare to induction motor .same 90 kw motor used same load output

1847

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How to calculate earth fault current for 6.6 KV , 50 HZ , 756 Amps , 3000 RPM , 0.8 PF generator

2053

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what are the reasons of CT circuit faulty in busbar protection scheme?

1480

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What is mean by hot and cold loop testing? What is the difference between them?

1134

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what is ATS & RING MAIN UNIT in Distribution System?And its Function.

2016

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what is 3rd Harmonics? how it is generated in alternator

9496

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give single line diagram of D.G distribution form alternator to main L.T panel?

7569

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What is the meaning of dedicated earthing?

2178

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How can eliminate noise problem inside temperature controller temp. variation due to contactor chattering problem.

1635

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What is current divider rule (cdr)?

1351

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1)How much current can a 3-1/2 core 100 mm wire carry? 2)What are the special cables required for explosion proof wiring? 3)In case you do not have coal and salt for earthing, how can you achieve good temporary earthing? 4)One horse power single phase motor is more likely to get hot than a one horse power 3 phase motor. Is it true or false, if true why? 5)What are the different types of soft starters for large motors?please explain?

4652

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how to select diiferent power transformers of same capacity on no load loss and full load loss by economical point of view.?

1980

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Is the installation of the filter cloths necessary before spreading the gravels at the transformer yards?

1947

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What is the difference between type1 and type2 relay protection co-ordination for motor feeders

2236

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