bars and interconnecting cable ends and can carry
output. The distribution section distributes power
the bus current. One disconnect link is used on
to the different loads on the ship.
Switchboard bus bars (fig. 9-6) are heavy,
rugged copper or aluminum bars. They distribute
the power within the SWBD. They are used
because they can carry the large current loads
NEVER OPEN OR CLOSE DISCON-
found in the SWBD.
NECT LINKS ON AN ENERGIZED
Current between SWBD sections is also very
high. Large cables are used to connect these
sections. Since there are no CBs between sections,
you have to use some device to isolate a section
after a casualty. Disconnect links are used for this
The control section contains controls and
purpose. These devices are connected to the bus
instruments required to control the generator's
Figure 9-6.--Rear view of a switchboard showing bus bars.