Isolating means is arranged to isolate {HEAD ~ the at least one phase} of {TAIL ~ the synchronous electrical machine} with the fault 
of
Isolating means is arranged to isolate { HEAD ~ the at least one phase } of { TAIL ~ the synchronous electrical machine } with the fault
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH