ZLL
SS3B auxiliary machine protection device
delivery time:2 weeks
The SS3B auxiliary machine protection device is suitable for SS3B, SS4 modified and SS6 modified electric locomotives. It is used to protect the overload,
locked rotor and single phase faults of each motor in the auxiliary system. During the operation of the system, once the current of the auxiliary machine
exceeds the allowable value and after the corresponding delay, the protective device actuator will act to disconnect the corresponding contactor,
so that the auxiliary machine circuit can be separated from the fault operation. If the contactor cannot be disconnected, after a certain time delay,
the backup protection circuit of the device will act to directly disconnect the main circuit breaker.
