Generator
The generators feature the following major components:
| • | The rotor with slip rings and brushes |
The pulley and the fan cool the slip ring and the frame.
The generator features permanently lubricated bearings. Service should
only include the tightening of mounting components. Otherwise, the generator
is replaced as a complete unit.
Regulator
The voltage regulator controls the field current of the rotor in order
to limit system voltage. The regulator switches the current on and off at
a rate of 400 cycles per second in order to perform the following functions:
| • | Obtain the correct average current needed for proper system voltage
control |
At high speeds, the on-time may be 10 percent with the off-time
at 90 percent. At low speeds, the on-time may be 90 percent
and the off-time 10 percent.
