The lubrication system includes the facilities required for lubricating both the turbine and
generator. In most cases, the generator lubrication system is self contained and, therefore,
does not require auxiliary pumps. However, large machines may have bearing lift pumps for
use during starting. Some high speed generators use pumps for circulating the lubricant after
the machine is running. Oil is circulated through those oil coolers by circulating oil pumps.
Automatic control scheme must consider the operating requirements of the lubrication system
during starting, running and shutdown.