WHY ARE THE LT GENERATORS SOLIDLY EARTHED WHILE THE HT GENERATORS ARE EARTHE T

WHY ARE THE LT GENERATORS SOLIDLY EARTHED WHILE THE HT
GENERATORS ARE EARTHE THROUGH NGR OR NGT??

Question Posted / minu.aiesec

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WHY ARE THE LT GENERATORS SOLIDLY EARTHED WHILE THE HT GENERATORS ARE EARTHE THROUGH NGR OR NGT??..

Answer / sanjay kolambekar

Small Generator's are usually a low voltage or
highimpedance in case of HV generator with lower rating
hence the fault current will be less and equipments can
withstand the same. Where as in case of HV Generators with
larger ratings the voltage level is high or the impedance
is low hence the fault current is much higheer. In order to
limit the Fault current to the required level suitable
rating of resistance needs to be introduced between the
Generator neutral and Earth.

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WHY ARE THE LT GENERATORS SOLIDLY EARTHED WHILE THE HT GENERATORS ARE EARTHE THROUGH NGR OR NGT??..

Answer / subash

in HV Generators with larger ratings the voltage level is
high or the impedance is low hence the fault current is
much higheer. In order to limit the Fault current to the
required level suitable rating of resistance needs to be
introduced between the Generator neutral and Earth and to
protect the insulation of the generator and getting heated
up while fault uccurs

Is This Answer Correct ?

4 Yes

0 No

WHY ARE THE LT GENERATORS SOLIDLY EARTHED WHILE THE HT GENERATORS ARE EARTHE THROUGH NGR OR NGT??..

Answer / k.prakashchandra

Electrical energy is directly is utilised in case of small
alternators whereas it is not so in HT generators.

Is This Answer Correct ?

0 Yes

5 No

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