Answer Posted / siddharth tayade

onely internal fault is detected by the diffrential relay
it will not trip under through fault condition

Damping resistor provided in open delta (tartiary) winding of a measuring PT at the incoming of a MV inverter drive panel is getting heated up. Can any body explain the reasons and suggest the remedy?

3099

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What is meant by system?

1112

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why do we carry out winding resistance test?

2343

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What are the advantages of a three-phase system over a single-phase system?

1170

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why ct ,cvt should be stored in a vertical position?

2693

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What is kvar?

1387

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If we need 4c× 50mm sq cable but it's not available so we can pull 4c×25mm sq two cables?

1467

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What is the main purpose of c.f.b.c.boiler

1752

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we have 15 ampere variyac but we want 30 ampere variyac what we do

2001

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why we use ac supply as 415 volts instead of 415 v why we cant apply 230 v for dc

2457

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From past few months I am getting lagging pf even though sufficient capacitors used in circuit. Where is the problem pls answer

1488

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what is the transmission loss for electrical supply? specifically a large shopping complex where the grid is half KM away, what will the % of transmission loss? is there any transmission loss for captive unit generation for above set? thanks

2034

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describe the fully control circuit diagram of ac drives

1917

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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?

2373

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Why the power generated in dams is complex power? Why the generators in dams cannot produce Real power directly (i.e power which has zero reactive part)?

1845

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