84. By what means is an AC generator prevented from becoming motorized?

A reverse power relay prevents an AC generator from motorizing by detecting and interrupting reverse power flow, which occurs when the generator draws power from the system instead of supplying it. This protection is essential because a generator can function as a motor if its prime mover fails, potentially damaging the generator or its power source. Overtrip mechanisms, governor controls, and back pressure trips address prime mover protection or load regulation, but do not directly prevent reverse power flow and subsequent motoring.