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Answer Posted / ramarao
Mineral insulating oil / askarel
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i am an maintenance engineer. one distribution board have 5 feeder. recently its ELR trips frequently, but it take some times after trip( 10min,20min..)but 3 feeder no load. two feeder only loaded. i checked one feeder IR value all values are above 50Mohm.but B phase to Earth is only 9Mohm.any problem about low value
how many load we can take for lighting
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if any body have question paper of railway (section engineering),then plz send me .i will thank of him/her.
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