{HEAD ~ The induced voltage} is calculated from a parameter related to secondary current and {TAIL ~ known characteristics} of loop impedances through which secondary current flows 
{ HEAD ~ The induced voltage } is calculated from a parameter related to secondary current and { TAIL ~ known characteristics } of loop impedances through which secondary current flows
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH