Which two conditions will result in an automatic disconnect of the IDG?

Which two conditions will result in an automatic disconnect of the IDG?

• A. Over temperature or Over torque
• B. Low oil pressure or High oil temperature
• C. High voltage or High current
• D. Loss of electrical load

Answer: (A)

The generator has built‑in protections that keep it from being damaged. It will automatically disconnect if the drive or the generator itself gets too hot, or if the torque coming from the engine exceeds what the generator can safely handle. Over temperature can injure insulation and windings, while over torque can twist or stress internal components beyond their design limits. In either case, the protective system opens the disconnect to isolate the IDG from the electrical bus and prevent further damage or faults in the system. Other conditions listed don’t trigger the automatic disconnect in this setup: lubrication problems, electrical faults, or loss of load are managed by separate protections or would produce different system responses rather than a direct IDG disconnect.

The generator has built‑in protections that keep it from being damaged. It will automatically disconnect if the drive or the generator itself gets too hot, or if the torque coming from the engine exceeds what the generator can safely handle. Over temperature can injure insulation and windings, while over torque can twist or stress internal components beyond their design limits. In either case, the protective system opens the disconnect to isolate the IDG from the electrical bus and prevent further damage or faults in the system. Other conditions listed don’t trigger the automatic disconnect in this setup: lubrication problems, electrical faults, or loss of load are managed by separate protections or would produce different system responses rather than a direct IDG disconnect.