{HEAD ~ The actual impedance} of {TAIL ~ the power line} may then be compared with the initial impedance profile and it is possible to ascertain whether a fault exists on the power line 
of
{ HEAD ~ The actual impedance } of { TAIL ~ the power line } may then be compared with the initial impedance profile and it is possible to ascertain whether a fault exists on the power line
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH