Answer / moath

there are several type of grounding system
if your system star connected try to unify the nutral with
ground another thing try to ballance your load

Answer / guru

Make a Seperate grounding for Neutral

To prevent the mal operation of a differentially connected relay while energizing a transformer, the relay restraining coil is baised with (a)second harmonic current (b)fifth harmonic current (c)third harmonic current (d)seventh harmonic current

2 Answers  

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Please brief me about number of pole in alternator.In single phase alternator coils are connected in star or series. How to calculate frequency for the same.

0 Answers  

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why we use isolation transformer?

2 Answers   Godrej,

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Why Lighting transformers are used? what will be the current if lightings connected through direct raw power?

1 Answers   BMM,

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how to calculate the load on transformer..????

2 Answers   Bhel,

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cleat wiring system is used at

2 Answers  

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how to calculate the lightning arrester conductor @ no of earth pits required

0 Answers  

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Which protection detects both AC and DC?

3 Answers   Megatron Solutions,

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what are the types of sus station ?

13 Answers   NTPC,

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difference between temperature sensor and temperature switch

3 Answers   ABB,

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Why the transformer rating is denoted in VA rating why not in KW

7 Answers  

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in a distribution board,if we have a load and we have selected a cable after making all calcs (Deratings and V.D , ect...) the cable we have selected was 10mm.sq. now, shall the internal cable inside the switchboard should be 10 mm.sq Like the external or it can be Less???? if somebody have an specs or information he can help D:

1 Answers  

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