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