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Question
how could we findout the lightning arrester failed or not in
live circuit? Is there any instrument to measure the high
voltage at the time of sky lighting?
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
If the L.A. is intact ,you have to assume that it in working
condition.There is no need to test it with high voltage ,as
it is already subjected to working voltage .Only physical
examination may help you.In case of E.H.T,LA ,it is usually
provided with stay-put pointer ammeter to measure leakage
current.You have to replace the L.A. when the pointer enters
the red region.
 
Is This Answer Correct ?    0 Yes 1 No
K.prakashchandra
 

 
 
 
Other Electrical Engineering Interview Questions
 
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iam working as a electrical engineer. i want to know about any license or certificates regarding my field. for my carrier and ti improve the knoweledge.,,, how we get that..and what procedures......... pls help me   1
why an ac solenoid valve attract the plunger eventhough we interchanges the terminal?will the ploes changes?   1
how dg's working of 1000kva.   1
WHAT IS THE MINIMUM IR VALUE FOR CABLE CHARGING Google 4
there is a power transformer 66/11kV in delta-delta connection has 5 feeder coming out from the secondary side. One of the feeder in it normally loaded (loaded than other feeder)and this feeder usually trips with double OCR causing the bank transformer to trip. Now if the load of this feeder is put on other transformer then that no problems occurs on that transformer or the load. However normally all the test(IR, PI, short ckt, open ckt,grounding test and other ) has been conducted for this but evertything transformer..... I am not geting what is the actual problem...   2
Transformer Secondary maximum current (max. load)   3
 
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