Which function does an AC generator control unit NOT perform?

An AC generator control unit is responsible for a variety of functions essential to the operation and safety of electrical power systems. One of its primary roles is to regulate the generator's field, which directly influences the output voltage and overall stability of the power system. This involves generator field control, allowing the unit to adjust the magnetic field strength to maintain a consistent voltage output.

Open phase protection is another important function handled by the control unit. This safety feature detects any loss of phase integrity in the generator's output, which can lead to unsafe operating conditions and potential damage to the generator or connected systems.

Additionally, over-voltage condition protection is a critical safety mechanism that prevents excessive voltage outputs from damaging electrical components or systems. The control unit monitors voltage levels continuously and takes corrective actions if over-voltage situations arise.

Fuel consumption monitoring, however, is typically outside the scope of the functions performed by an AC generator control unit. While it is important for overall operational efficiency and management, monitoring fuel consumption often falls under the purview of other systems or management tools that track the fuel usage separately from the generator's electrical output and performance functionalities. Thus, it is the function that the AC generator control unit does not perform.