A synchronous electrical machine comprises {TAIL ~ a plurality} of {HEAD ~ phases} and detecting means arranged to detect an open circuit fault in at least one of the phases of the synchronous electrical machine 
A synchronous electrical machine comprises { TAIL ~ a plurality } of { HEAD ~ phases } and detecting means arranged to detect an open circuit fault in at least one of the phases of the synchronous electrical machine
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH