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