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1.7.6
Battery Chargers
An engine-driven, battery-charging alternator charges
the battery whenever the generator set operates.
Engine-driven systems can quickly restore the charge
used in a normal cranking cycle.
When the engine is not operating, a very low charge rate
from an AC-powered battery charger is usually sufficient
to maintain a full charge on the batteries.
1.7.7
Alternator Factory Connection
Figure 1-5 shows the factory connection for the
single-phase 120/240 V 60 Hz generator set. The
generator set is not reconnectable.
100--120/200--240V, 60Hz
Figure 1-5 Single-Phase Factory Connection,
120/240 V 60 Hz
12
Section 1 General
1.7.8
A typical standby system has at least one automatic
transfer switch connected to the generator set output to
automatically transfer the electrical load to the
generator set if the normal source fails. When normal
power returns, the switch transfers the load back to the
normal power source and then signals the generator set
to stop.
The transfer switch uses a set of contacts to signal the
engine/generator to start. When the normal source fails
and the generator set master switch is in the AUTO
position, the transfer switch contacts close to start the
generator set.
The engine start terminals are usually located near the
transfer switch contactor with an engine start decal
identifying the terminals. Use the transfer switch wiring
diagrams to identify the engine start terminals prior to
making connections.
Connect the transfer switch engine-start contacts or a
remote manual engine-start switch to the engine start
connectors on the generator set.
harness with pigtail to connect to leads 3 and 4 from the
generator set controller to the engine-start leads from
the ATS. Size the wire according to the transfer switch
connection and the length of run. Use separate conduit
for the DC engine-start leads and the AC generator set
load cables and battery charger leads.
ADV-5875A--
Automatic Transfer Switches
Use the remote
XP-6341 6/10
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