Answer / vinaykumar

it will draw heavy current and may damage the winding of
the motor due more phase voltage when compared to star
connected winding on start

Answer / avinash

if you start the motor directy, it will draw the 6 times of this rated current. it effects the supply source & also the other machines runs along with. (i.e it may cause the blow offing of fuse, Tripping of MCB etc)

Answer / kuttivenu

If the Motor starts directly in Delta,it will drawn more
starting current.due to that the winding may get effect.

what perpos use cepacitors in motars,fans,lights,and LT panal

1 Answers  

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single phase brower fan with control starter. *problem is when operate it.It will be trip.

1 Answers  

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What is the distance between each insulator in 33kv transformer and how can it calculate

0 Answers  

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Can anybody tell me the Electrical IS rules website?

1 Answers  

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How to do cable earhing? whether by grounding Armour to ground or by running extra G.I wire along with cable? which one is preferred mostly amoung them? If the second one is more preferable how many GI wires to be run along with cable (1 or 2)?

0 Answers   HAL,

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sir i have a car stereo system and there is jack on him so can u tell me a way to find out their power terminals on the jack or on the circuit board"

0 Answers  

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how we can classify the circuit braker???????

1 Answers  

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When we synchronize the Generator BKR with TIE BKR then Gen BKR is hold but TIE BKR is Tripped on Non directional over current but when TIE BKR is Syn. with Gen. BKR then no fault occur so what is the problem

1 Answers   ABB,

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I have 30 kw motor load & i have selected 10 kvar capacitor bank for power factor improvement.my existing p.f is 0.85 & proposed p.f is 0.99 so ,is it right selection? 2 nd question how to connect c.bank whether in delta or star connection & how to decide it?

1 Answers  

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how can we calculate fault current of a line in a 6 bus syatem if the faulted line is known?

1 Answers  

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How power factor of a transformer is calculated

3 Answers  

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While connecting the flood light plug on to the 415 V distribution panel,there was spark and the cable got burnt. Three ignitors of the flood light also burnt of. The lamps are of 400 W (total 6 lamps) connected through 1.5 mm2 cable. The plug was immediately removed from the circuit. There was a 30 mA RCD connected and a 250 A MCCB; however both did not trip. What could be the possible reasons for the circuit devices not to trip?Can someone assist please. Additional info if needed can be provided.

2 Answers  

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