When will an IDG automatically disconnect from the system?

An Integrated Drive Generator (IDG) will automatically disconnect from the system in response to an over temperature or over torque condition. This safety mechanism is crucial because an over temperature condition can indicate that the generator is operating outside its safe thermal limits, potentially leading to failure or damage. Similarly, if an over torque condition occurs, it suggests that the mechanical load is too high for the IDG to handle safely, which could lead to mechanical failure or stress. By automatically disconnecting under these conditions, the IDG helps protect both the generator itself and the overall electrical system of the aircraft from potential malfunctions or hazards.

Other scenarios, such as crew intervention or system maintenance mode, involve active decisions or actions taken by personnel, rather than automatic safeguards related to conditions affecting generator performance. Loss of electrical power, while serious, does not pertain directly to the operational safety features that dictate an automatic disconnection due to extreme conditions like over temperature or over torque.