Answer / narayanan

protect to the transformer,
human safety
short circuit for protect the transformer
eb line neutral earthing is not work to support neutral
earth
constant voltage

Answer / balachandra

Neutral grounding and its advantages. ... Neutral grounding provides protection to personal and equipment. It is because during earth fault, the current path is completed through the earthed neutral and the protective devices (e.g. a fuse etc.) operate to isolate the faulty conductor from the rest of the system.

Answer / sonu

to protect transeformer from over voltage during unsymmetrical fault
adv> keep voltage constant of healthy phases

generally in LT and MV motors we are using 3.5Coresx16,25,35,50 etc cable for supply.although motors is earthed at two point and having all protection.then why we are using that 1/2 core for earthing the motors.while in HT cable we are using only 3core cable for motor supply.generally lt and mv motors are delta connected and ht motors having star connection.whethere it is having any relation with winding connection( star or delta).all motors i am talking about are dol only.can anybody solve my confusion.thanks...

0 Answers  

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In case of legging current of 20°, pf is .94 and leading of 20°,pf is .94 , in mathematicaly both are same but in realy how it is differ ?

3 Answers  

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How to work meggar?

0 Answers   Anand I-Power,

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If two hack saw blades, seperated by 1mm thick paper,are connected across 230volts, and immersed in water,then they start getting heat. This is fact,i dont know how they get heated.Blades are not directly connected together. Please if anybody knows the fact ,revert back to me

3 Answers  

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11000volt DG set carnt kaise banvay

0 Answers   AVK,

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what is SWA type of cable?????

4 Answers  

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Transfer function is == ? a. Mathematical model b. System with no physical structure c. Can be calculated through differential equations

1 Answers   CCP,

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how to calculate energy meter multipling factor by ct & pt raitio

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How to select the different contactors ( starter combination) for different AC motors? what about fuse cappacity 4 different motors too?

2 Answers   Equate,

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What is the function of a neutral reactor.

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how capacitor control the power factor/

2 Answers   ABB, Apollo,

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HOW TO CALCULATE AMPs OF CURRENT TRANSFORMER IN HT Panel

0 Answers   MAB,

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