Answer / wareagle

Explain in detail what ground free electricity is.

Answer / dheeraj

Grounding of large installation is necessary for earth fault detection and timely tripping of CBs. Without grounding hazardous potential may develop over the equipments which causes damage to the costly equipments.

Answer / kj

If you mean that we do not earth the neutral?

In a perfect situation this would be good and reduce the
risk of electric shock.

Unfortunately in real life it can only work in small
situations - using an isolation transformer for a handheld
light for example.

In large installations there is always a risk of failures
of insulation or machines. This would then cause a
connection of the neutral or phase to earth and therefore
it would no longer be ground free. The other thing is that
no insulation is perfect and there will always be leakage
with the same result.

what is meant by power and distribution transformer ?

0 Answers   CG,

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How to design CT for connected with Transformer OLTC operation? normally CT output design for 1A/5A range but during OLTC Tap position changing time how to function the CT?

1 Answers   HEG,

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why distribution transformer are of DY11 type?

4 Answers  

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if we apply 1000ADC instead of 100ADC or We apply 50ADC instead of 100ADC,What will be happened in the test result value.Pl explain

0 Answers   NCC,

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

0 Answers  

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what is the advantage of Cathodic eathing system and what is the basic principle and how itis working, please explain clearly .

2 Answers   Meinhardt,

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IF DISTANCE IS 100METERS B/W AMP.METER AND CURRENT TRANSFORMER WHAT WILL BE AFFECT IN ACCURACY .METER CAN SHOWING ACCURATE CURRENT OR NOT IF NOT WHAT CAN I DO TO GET 100% ACCURACY.

0 Answers  

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expalanation for 5p10 class.

6 Answers  

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what is power factor? whether it should be high or low? why?

11 Answers  

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how the length effects the ampacity of the cable? if a cable is carrying a current of 100A for 50m length then what will the effect on current if we double the length?

2 Answers  

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hi engineers,if suppose distribution is going to two diff village mistakenly they r interchange the neutral of twowhat happen?

7 Answers   Bhel, L&T,

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What is the PI test stand for transformer and what is the producer to do this test?

1 Answers  

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