what is the difference between surge protection capacitor
and surge arrestor
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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
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What are the specific gravity of fully charged and fully discharged lead-acid battery?
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How to confirm the Phase shifting Transformer VECTOR GROUP relation , as below ZNy11.45d10.45-ZNYy0.15d11.15
Define demand factor?
What will be the resultant out put voltage when two different voltage rating batteries are vconnected in parallel? pls. answer with example if available.
when the rheostat kept in minimum to maximum position in motors what will happen?
What is Energy Audit..?