Voltage values considered in {HEAD ~ the context} of {TAIL ~ the invention} are absolute voltage values of voltage phasors representing a three phase system 
of
Voltage values considered in { HEAD ~ the context } of { TAIL ~ the invention } are absolute voltage values of voltage phasors representing a three phase system
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH