Normal patrol inspection of the generator in operation is a necessary condition to ensure the long-term safe operation of the generator. During normal patrols, operators should check the generators in operation as follows:
(1) Check the temperature and vibration of each part of the generator.
(2) Check the excitation system, especially the operating conditions of the slip ring and commutator.
(3) Check the end of the stator winding for vibration, wear, heat generation and discoloration.
(4) Check the cooler for water leakage and frost.