INSTALLATION (continued)
1--4
observe these lights
Figure 1–7. Standard controls and indicators.
2–VoltageChecks
First check nameplate on transfer switching device;
rated voltage must be the same as normal and
emergency line voltages.
Use extreme caution when using a meter to
measure voltages in the following steps.
Do not touch power terminals; shock, burns, or
death could result !
Perform steps 1 through 6 at the right. Observe the status
lights. See Figure 1–7.
O Black circle means light is on.
P White circle means light is off.
* If necessary, adjust voltage regulator on the generator
according to the manufacturer’s recommendations. The
Automatic Transfer Switching Equipment will re spond
only to the rated voltage specified on the Transfer
Switching device nameplate.
Also see page 4–1 for the HI–LOW voltage adjust
setting in the controller. The LOW setting shifts all
voltage settings down 4. 2%; for example, 240 V to 230
V.
1
Close the normal source circuit
breaker. The Normal Transfer
Switch Position and the Normal
Source Accepted lights should
come on.
Source Accepted
Normal
Emergency
2
Use an accurate voltmeter to
check phase to phase and
phase to neutral voltages pres -
entatthetransferswitchingde-
vice normal source terminals.
3
Close the emergency source
circuit breaker. (Start generator,
if necessary.) The Emergency
Source Accepted light should
come on.
Source Accepted
Normal
Emergency
4
Use an accurate voltmeter to
check phase to phase and
phase to neutral voltages pres -
entatthetransferswitchingde-
vice emergency source termi-
nals.*
5
Useaphaserotationmeterto
check phase rotation of emer-
gency source; it must be the
same
as the normal source.
U
V
W
6
Shut down the engine–genera-
tor, if applicable. The Emergen-
cy Source Accepted light should
go off. Then put the starting
control selector sw itch (on the
generator set) in the automatic
position. Close enclosure door.
Source Accepted
Normal
Emergency
Now continue to 3 – Electri cal Operation on next page.
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