Using this principle, you can plug an electric motor into a generator, start the generator and then turn the motor to generate an electric current. The current “flashes” the field windings in the generator and remagnetizes them.

How would you get a generator to work after it has lost all of its residual magnetism?

All Answers (6) If a generator lost its residual magnetism, it should be excited separately i. e. from an external power source up to gaining the essential magnetism. This is also done for the first time operation of a new generator.

How do you regain residual magnetism in a generator?

To restore the small amount of residual magnetism necessary to begin voltage buildup, connect a 12 volt battery with a current limiting device to the exciter field while the generator is at rest, as follows: 1. Remove exciter field leads F+ and F- from the voltage regulator.