why should we place 9KV lightning arrestors in 11KV
substation ?
Answer Posted / mohan
THE L.A USED FOR 11KV SYSTEM IS 9KV BCOZ IT OPERATE AT 9KV
OR ABOVE IF WE USE L.A OF HIGHER RATING (15KV) THEN IF
VOLTAGE SURGE OF 14.5 IS PRODUCED THEN OUR LA WILL NOT
OPERATE AND PROTECTION FAIL AND HIGH VOLTAGE SURGR DAMAGE
THE SYSTEM
| Is This Answer Correct ? | 2 Yes | 22 No |
Post New Answer View All Answers
Why are the laminations insulated from each other?
Why do we pefer VCB over OCB?What are the advantages of VCB over OCB?
which fault is severe and why?between lll fault and lllg fault which fault is severe and y?
Explain what is rated speed?
Pl. share your experience about industrial-electronics repair of machine tool.
how many joint can done in HT line and what is life of the joint
what is differant beetween overload current and phase current?
Proviiding the Dedicated N earth and individual Body Earths ,Finally these all looped /Now my Question :- will it not harm in case of Transformer Fault current flows in Dediacted N Earthing to Looped Body Earthing.
What is the difference between in Fourier series and Fourier Transform. and please tell me the difference between both of them and the why we use them in communication system?
which VFD is better ( LT or HT)
As a electrical engineer.. what are the basic norms should follow in transformer oil testing.. 1.What is the Electrode type? 2.How long time you will give for oil testing?
For some transformers we are using solid neutral earthing while some others we are using resistance earthing why ?
how does directional relay work incase of ac ?
What does the kvar means?
how electical engineer is related to apsrtc (general) post? if they ask a question in interview as why did u choose this job what shd be answer