{HEAD ~ Any change} in {TAIL ~ the impedance} of the power line may be detected in a relatively straightforward manner and certain faults that may cause as little as 5% change in the impedance of the line may be detected and rectified by the electricity supplier 
{ HEAD ~ Any change } in { TAIL ~ the impedance } of the power line may be detected in a relatively straightforward manner and certain faults that may cause as little as 5 % change in the impedance of the line may be detected and rectified by the electricity supplier
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