60
Chapter 4
TYPICAL AC GENERATOR (GEN-SET)
OVERVIEW
The generator (gen-set) is used to provide on board
alternating current (AC) when the vessel is unplugged from
the dockside cord or at sea. Generator frequency known
as hertz is domestically set at 60 while overseas countries
normally require a setting of 50. As the generator reaches
full rated no load output (amps) at 60 hertz it should
display est.120 volts. At 50 hertz it should display est. 230
volts at full output. The generator option is located in the
engine room.
TYPICAL GEN-SET WITH
SOUND ENCLOSURE
Typical Generator Fuel System
The generator is supplied by the same fuel tanks as the
engines. The generator feed valve is normally marked for
identifi cation purposes.
Familiarize yourself with the location of all equipment
and valves.
Note: Normally the generator feed and return use a
1/4”inch barb fi tting located on the fuel tank. The feed
portion will use a anti-siphon valve.
The fuel system features an in-line fuel fi lter located close
to the generator. It’s job is to keep fi ne particles and water
out of the generator fuel system. Refer to the vendor
information for periodic maintenance schedules. Clean
fuel is the life line of generator performance.
The generator features a sound enclosure which reduces
noise and enables quick access for most inspections,
troubleshooting and routine maintenance. See the
illustration below.
TYPICAL GEN-SET W/O SOUND ENCLOSURE
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