Answer / santosh kawade

Transformer neutral in distribution transformer is earthed
because:
1) Keep neutral at zero potential,
2) keep all three phase voltage balance even if load is
unbalance,
3) to provide return path for current in case of earth
fault condition,

Santosh Kawade
9224 69 3116

Answer / kalinath

as we all know that the distibution transformer has an
different loads on each phase even though we are try to
balance them there is no such an ideal case that each
transformer is ideally loaded....
in this scenario as the output of the transformer is star
connected there is a possibility to have a nutral current
in it if we not connect it to the ground then there is a
possibility to flow reverse current in the neutral which is
a very much problem...

i think this is the reason.....

Answer / samo

grounding or earthing offers two principal advantages:
1- it provides protection to the power system.
2- earthing of electrical equipment ensures the safety of the persons handling the equipment.

Answer / mrudang

neutral is grounded in transformer

1) is for REF (resricted earth fault protection)
2) to eliminate the archinng ground fault

Answer / gunasekaran

we have to keep the neutral at zero potential and we can get 3phase four wire system, normally in home appliances we r using single phase system.at earth fault condition without neutral another 2 phase getting full line voltage if it is earthed it will build only 80% line voltage will appear

Answer / harvey petroh

Harvey P
1-to balance the three phase voltage.
2-to incorporate the operation of ELCB
3-to come up the neutral wth zero potential

what is different between installation and commonissonig.

3 Answers  

what is a lightning arrester???

12 Answers   ABB, NTPC,

what is the ckt diagram of a tubelight and is it the simplest ckt of electrical engineering and also the component?

0 Answers  

How will calculate the current rating (withstanding capacity)of alumunium and copper cables?

1 Answers  

I have two power supply.a)govt. power b)Captive power.3 phase load connected inside factory.when source change govt. source to captive some motor rotate reverse. Is phase sequence changes when if off & on?If I off generator & on it again is it possible to get changed phase sequence??

4 Answers   ABB,

Why 60Hz motor taking more current on load in 50Hz power supply?

1 Answers  

If the capacitor bank is installed in switchyard say 132/22kv then on LT side say 22kv/0.433kv is it necessary to install capacitor bank for maintaining power factor. if pf is maintained on HT side then will that be maintained on LT side as well.if not then how&why??????/ please explain...........

3 Answers   MacLellan,

What is the method to calculate the capacitor bank rating for say 50 KW load and how do we connect each capacitor to busbar??

4 Answers  

how slip power recovery system work

0 Answers   Ambuja,

What is the use of arc chute in ACB?

7 Answers   lenovo,

1. what is the power factor and whatis his losses 2. what is the working procedure of 51RNB AND 87 relay

3 Answers   ABB,

How to select a cable size according to load

1 Answers   Red Bull,