Answer / k.s.yadav

Earth fault protection will be defunct.

Answer / privin p v

according to KCL midpoint of a star connection is zero potential.If the load of the transformer is balanced nothing happen while neutral earthing broken.But in case of any unbalancing occurs there is no way to go the circulating current and heat occurs.It will damage the transformer

Answer / tejpratap pandey

trnsformer phae to neutral voltage unbalanced & its may
dammage load side equipment.

Answer / r.ramadoss

Netural is providing in the transformer for passing 3rd
assymentrical current , if the netural was not present ,
due to the surge voltage or un balanced voltage the
transformer life time will be decreased

Answer / anand

harmonics will increase and sinusoidal output will tend to
become a bit nonsinusoidal

Answer / dk gnfc

When neutral open,line voltage flowing in phase,so overvolage occurs in all phases,and if REF provided,it will trip the transformer as protection against neutral opened from earth

Answer / latika

Question should be more specific.

Answer / nagaraju n

in this condition is un safe condition .

transfarmer is become fail to operation.& become a dameged

Answer / srinivas

there is a standby earthfault will occur on load side.

Answer / thuranga

Normally any power or normal transformers is designed in
such a way that all the three phases will be 99.9% balanced(
winding wise).
so neutral in transformer is not at all needed,but for extra
protection neutral is put.

so if the neutral is not present,there may not be any much
change in its operation but vibration of the transformer
might increase.only that will be the change.

if 20 hp motor starts directly stars and contenious run . what will be the effect.

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