I plan to use a automatic genset controller to protect/run a synchronous generator. This controller determines when to disconnect the starter by determining the generator frequency. I plan to connect the exitor regulator to the main breaker so when the main breaker trips the regulator is shut down. Any fault condition will trip the breaker and also shut down the engine. It is my understanding that even with the regulator power supply disconnected there is still some residual magnetism in the rotor which causes the generator to still generate a small voltage. My concern is about what would happen if the engine shuts down and the breaker fails to trip, causing the load to still be connected to the generator as it slows down. Will this cause the generator to lose it's residual magnetism thus causing it to not generate at the next startup which would cause the starter to never disengage thus damaging it? I am aware that if an induction motor is stopped while a load is applied it will lose it,s magnetism causing it to need manual remagnetisation upon next startup. I am not sure if it applies the same to my application with a syncronous generator. Any confirmation of any answers will be nice!!