INSTALLATION
(continued)
1---3
RED
RED
GREEN
GREEN
observe
these lights
RED
RED
RED
Figure 1-3. Standard controls and indicators.
Functional Test
Read all instructions on the
Wiring Diagrams
and labels
affixed to the ACTB. Note the control features that are
provided and review their operation before proceeding.
After installing the ACTB check the following:
– Bypass Handle should be in the
OPEN
position.
– Isolation Handle should be in the
CLOSED
position.
– CN transfer switch should be
CLOSED.
– CE transfer switch should be
OPEN
.
If handles are not in correct positions, follow instructions
for Bypassing and Isolating the automatic transfer switch
in
Section 3
.
Do not force the handles
. Electrical
interlocks prevent a wrong sequence of operation.
1 – Voltage Checks
First check nameplate on transfer switch; rated voltage
must be the same as normal and emergency line voltages.
Use extreme caution when using a meter
to measure voltages. Do not touch power
terminals; shock, burns, or death could result !
Perform steps 1–6 at the right. Observe the status lights.
See Figure 1–3.
■
Black square means light is on.
❐
White square means light is off.
* If necessary, adjust voltage regulator on generator per the
manufacturer’s recommendations. The ACTB will respond only
to rated voltage specified on the nameplate.
Now continue to
2 – 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.
2
Use an accurate voltmeter to
check phase to phase and
phase to neutral voltages pres-
ent at the transfer switch normal
source terminals.
3
Close the emergency source
circuit breaker. Turn the
Engine
Control
switch to
Run
to start
the generator. 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 at the transfer switch emer-
gency source terminals.*
5
Use a phase rotation meter to
check phase rotation of emer-
gency source; it must be the
same as the normal source.
A B C
6
Turn
Engine Control
switch to
Auto
to stop the generator. The
Emergency Source Accepted
light should go off. Then put the
starting control selector switch
(on generator set) in
automatic
position. Close enclosure door.
