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INSTALLATION (continued)
1 --- 4
observe
these lights
RED RED RED
RED
RED
GREEN
GREEN
Figure 1-6. Standard controls and indicators.
2 --- V o l t a g e C h e c k s
First check nameplate on transfer switch; rated voltage
mustbethesameasnormalandemergencylinevoltages.
Verify that the feeders have been
connected to the proper lugs.
Before energizing the switch check to be
sure that both normal and emergency
contacts are not left in the closed position.
Useextremecautionwhenusingameter
to measure voltages. Do not touch power
terminals; shock, burns, or death could resul t !
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 square means light is off.
* If necessary, adjust voltage regulator on the generator
according to the manufacturer’s recommendations. The
Automatic Transfer Switc h wil l respond onl y to the rated
vol tag e specified on the Tran sfer Switch namepl ate.
Note: Refer to Section 3 of Group 5 Controller User’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 --- Elect ri c al Operatio n on next page.
First check nameplate on transfer switch; rated voltage
mustbethesameasnormalandemergencylinevoltages.
1
Close the normal source circuit
breaker. The Transfer Switch
Connected To Normal and the
Normal Source Accepted lights
should come on.
2
Use an accurate voltmeter to
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.
4
Use an accurate voltmeter to
check phase to phase and
phase to neutral voltages pres -
ent a t the 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 sw itch (on the
generator set) in the automatic
position. Close enclosure door.