INSTALLATION (continued)
1--4
observe
these lights
RED
RED
GREEN
GREEN
AMBER
Figure 1-6. Standard controls and indicators.
2–VoltageChecks
First check nameplate on transfer switch; ra ted voltage
mustbethesameasnormalandemergencylinevoltages.
Before energizing the switch check to be
sure that both normal and emergency
contacts are not left in the closed position.
Verify that the feeders have been
connected to the proper lugs.
Useextremecautionwhenusingameterto
measure voltages. Do not touch power
terminals; shock, burns, or death coul d result !
Perform steps 1 through 6 at the right. Observe the
status lights. See Figure 1–6.
Q Black square means light is on.
S White s quare means light is off.
* If necessary, adjust voltage regulator on the generator
according to the manufacturer’s recommendations. The
Automatic Transfer Switch will respond only to the rated
voltage specified on the Transfer Switch nameplate.
Note
Refer to Section 3 of Group 5 Controller U ser’s Guide
381333–126 for how to display the Status of the ATS and
the Voltage and Frequency of each source.
Now continue to 3 – Electrical Operation on next page.
1
Close the normal source circuit
breaker. The Transfer Switch
Connected To Normal and the
Normal Source Accepted lights
should come on.
Load
Disconnect
Active
2
Use an accurate voltmeter t o
check phase to phase and
phase to neutral voltages pres -
entatthetransferswitchnormal
source terminals.
3
Close the emergency source
circuit breaker. (Start generator,
if necessary.) The Transfer
Switch Connected To Normal &
Emergency Source Accepted
lights should come on.
Load
Disconnect
Active
4
Use an accurate voltmeter t o
check phase to phase and
phase to neutral voltages pres -
ent a t t he transfer switch emer-
gency source terminals.*
5
Useaphaserotationmeterto
check phase rotation of emer-
gency source; it must be the
same
as the normal source.
A
B
C
6
Shut down the engine–genera-
tor, if applicable. The Emergen-
cy Source Accepted light should
go off. Then put the starting
control selector switch (on the
generator set) in the automatic
position. Close enclosure door.
Load
Disconnect
Active
