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

3 Answers
6964 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

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.

Is This Answer Correct ?

10 Yes

0 No

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

Post New Answer

More Electrical Engineering Interview Questions

What is the basic difference of turn ratio & transformation ratio for a transformer?

8 Answers IGT,

A cylindrical wire is compressed in length by 10%. The percentage decrease in the resistance will be?????

0 Answers

Is it true online ups having bypass mode if it is true then why we called ups because it is interrupting power when goes in bypass mode

0 Answers

A 150KW 440V motor is need to replace in the field instead of faulty one. what are the main parameter should I need to check?

1 Answers

what is the use of back emf?

1 Answers

ohms law is applicable for dc or ac current or for both??? explain it berifly??

3 Answers

In three phase energymeter the spindle rotating backward why?

1 Answers

how does ELR works? explain

0 Answers

what will be the neutral to earth voltage while checking by the Digital multimete? and why?

1 Answers

how many types of Earth bits available

1 Answers

what is G.O.D.S. ?

2 Answers RCE,

Why the Petrol Guns in the Petrol bunk are earthed?

3 Answers ITC Infotech,

For more Electrical Engineering Interview Questions Click Here