What is the lower limit of megger value for 66/11KV power Transformer ?

Categories >> Engineering >> Electrical Engineering
Suggest New Category

What is the lower limit of megger value for 66/11KV power
Transformer ?

Question Posted / a.h.patel

7 Answers
19537 Views
MSETCL Maharashtra State Electricity Transmission Co Ltd, Torrent Power, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

What is the lower limit of megger value for 66/11KV power Transformer ?..

Answer / dinesh lokhande

As such values mentioned above are not same for all
transformers. Because Insulation resistance consist of
summation of resistance value for composite dielectric. i.e
dielectric consist of paper, oil, metal part, wooden
barriers etc which can be considered as several
capacitances in series.
Point here is we have to find out polarisation index

PI = Megger value after 10 mins / Megger value after 1 min.

PI as a normal practice and also mentioned in some
technical papers should be more than 1.3

Considering PI we can judge measured Insulation resistance
values of insulation.

Is This Answer Correct ?

18 Yes

2 No

What is the lower limit of megger value for 66/11KV power Transformer ?..

Answer / karan

the meggar value depend on insulation level,
but we can inicate in thumb rule,
& thumb rule is
minimum meggar(IR)value is per KV 5megaohmas

Is This Answer Correct ?

13 Yes

1 No

What is the lower limit of megger value for 66/11KV power Transformer ?..

Answer / ravi

Which Value????

Is This Answer Correct ?

18 Yes

10 No

What is the lower limit of megger value for 66/11KV power Transformer ?..

Answer / hasan mehdi

50 M Ohms

Is This Answer Correct ?

16 Yes

8 No

What is the lower limit of megger value for 66/11KV power Transformer ?..

Answer / uday pratap singh

5 Mega ohm per kV.

Is This Answer Correct ?

5 Yes

1 No

What is the lower limit of megger value for 66/11KV power Transformer ?..

Answer / venkatesh

minimum 200-250Mohms

Is This Answer Correct ?

5 Yes

2 No

What is the lower limit of megger value for 66/11KV power Transformer ?..

Answer / naveen kumar mishra

mndnnv

Is This Answer Correct ?

4 Yes

3 No

Post New Answer

More Electrical Engineering Interview Questions

Dear all i want to know SEWA Electrical Supervisor Licence test Previous Year Questions ? If any body know please send to me zohairaukllah@yahoo.com

0 Answers

How to find the maximum load, that can be supplied by a transformer.....

2 Answers ME,

Define the term Capacitance and Inductance?

0 Answers

what will be efficient rating of ac motor to lift a 10 kg wt of stone to 10 meter height with input 220V AC 50 Hz frequency???

1 Answers

what is the difference between phase and neutral?

3 Answers IAF, Indian Airlines,

what is meant by Hrc fuses.?In the distribution system different rating hrc fuses are used for tranformer(which is 3k,6k,10k,15k etc).what is k?.plz any brother tell me about k?

1 Answers

how unidirectional torque is produced in DC motor?

0 Answers

my b-tech percentage is 50%. what answer will satisfy the hr ?

0 Answers Wipro,

in dc series motor if field wdg is shorted then

0 Answers

what is difference b/t ac current and dc current

4 Answers L&T, Meghana Engineers,

Can we use same copper cable for both AC & DC power.

3 Answers

what is the difference between the following 2 situations ? 1)Line & Neutral=240V Line & Earth=230V Neutral & Earth=10V 2)Line & Neutral=230V Line & Earth=240V Neutral & Earth=10V

2 Answers Reliance,

For more Electrical Engineering Interview Questions Click Here