Answer / r k singh

First measurethe line voltage with respect to earth and
neutral separately and check which one is lower.
Case -1 If Ground to line voltage is lower then fault is
with ground ie earhing. It can be rectified by
strengthening the earthing or by making separate earth pit.
Case-2 If Neutral to line voltage is low then problem is
with your neutral line such case is to be dealt separately
as mentioneb below
a) either put isolation transformer in the circuit and
ground one terminal.
b) Make separate earth pit for the neutral line
c) check the main neutral connection ans size of the
neutral wire

Answer / mehul

i got 6v between neutral & earthing but my requirement is
less then 0.5v how i can get it , please halp me

Answer / puttanarasaiah ac

Use high voltage insulated cables or Use Underground method
for Mains supply (From pole to Meter board)and dont use any
metals In Terrace which are linked to the building because
it causes leakage flow through.

The loads are connected with phase and ground then why current flow as the loads ?

0 Answers  

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Determine the minimum cable size for a 28A single phase final sub circuit originating from the distribution board supplied by three phase submain. The route length of the final sub circuit is 54 m. Assume 1% voltage drop in the consumer's mains. Submain specification: Cable: 50mm2 4 core V75 copper; Route length 42m; Maximum demand 135A per phase

1 Answers  

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what is the meaning of powerfactor

6 Answers   NTP,

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why dc measurements are noted in mc whereas it is mi in ac measurements?

1 Answers  

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What is defference between earthed and unearthed cable(HT)? Which is better for under ground cabling?

1 Answers  

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How much the fault level of 11 k.v.,22 k.v., 33 k.v. (in Maharashtra- M.S.E.D.C.L) for calculation of short circuit current & selection of h.t.cable.

1 Answers  

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What is Minimum permicible meggering value for following 1) LT Panels (Ph to Ph / Ph to Earth) 2) 11 KV, HT Panels (Ph to Ph / Ph to Earth) 3) 11 KV Cable 4) LT Cable

1 Answers   BFL,

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Dry type transformers

0 Answers  

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What is making & breaking current ???

0 Answers   JLL,

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sourse is 66 KV / 350 MVA, transfarmer is 1000 KVA 6.6 / 0.415 kv, iF fault is 28.75 MVA on 0.415 KV Bus then calculat the Transfarmer Impidance

0 Answers  

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1.Whats the use of GNAC(Generator Neutral Accessory Compartment) 2. why generator or any other system require Neutral Grounding and not Phase grounding 3. what happens if any one of the phase is grounded. 4. if 15kv is grounded directly what will happen, why it should not be grounded like that 5. use of of NGTR(Neutral Grounding Transformer and Resistor) for grounding is helpfull and how

5 Answers   BEMCO, CSS, Powergear,

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what is meant by excitation which supply is used whether ac r dc in the lab applications

1 Answers  

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