Operator’s Manual Installation
8 381333-194 B
Installation
Figure 3. Standard controls and indicators.
2 – Electrical Operation
This procedure checks electrical operation of the ACTS.
Close enclosure door before proceeding to prevent
personal injury in case of electrical system fault.
Transfer Test
The ATS should still be bypassed. Both normal and
emergency sources must be available and the emergency
source generator (if used) must be capable of being
started; put engine starting control in automatic position.
The Transfer Switch Connected to Normal light and the
Normal Source Accepted light should be on.
1. Turn the Isolation Handle counterclockwise to the
TEST position.
NOTE: The engine generator may be signaled to start
while turning the Isolation Handle. If emergency source is
available, the ATS may operate to the emergency position.
If it does, operate Retransfer Delay Bypass switch.
2. Perform steps 1–5 at right. Observe the status lights.
See Figure 3.
■ Black square means light is on.
□ White square means light is off.
3. Turn the Isolation Handle clockwise to the CONN
(connected) position.
4. Turn the Bypass Handle clockwise to the OPEN
position.
** If you do not want closed–transition transfer, press
the Closed Transition Bypass pushbutton while the
controller display shows Waiting for In–Sync. This
action causes open–transition (momentary load
interruption) transfer to the opposite source, if
conditions permit. Also refer to the Group 5 Controller
User’s Guide 381333–126.
1
The Transfer Switch Connected To
Normal and Normal Source
Accepted lights should be on.
2
Turn and hold Transfer Control
switch clockwise to Transfer Test
until the engine starts and runs
(within 15 sec.). Emergency
Source Accepted light should come
on.
3
Transfer switch CE closes and
then transfer switch CN opens
(closed–transition overlap). The
Transfer Switch Connected To
Emergency light should come on
and the Transfer Switch Connected
to Normal light goes off (you might
see and hear the brief overlap
transfer). **
4
Transfer switch will operate back to
Normal position after Feature 3A
time delay. For immediate
retransfer turn Transfer Control
counter-clockwise to Retransfer
Delay Bypass. The Transfer Switch
Connected To Normal light should
come on; Transfer Switch
Connected to Emergency light
should go off.
5
The engine–generator will stop
after the Feature 2E time delay
(unloaded running engine
cooldown). The Emergency
Source Accepted light should go
off.
This completes the Functional Test of the 7ACTB
observe
these lights
operate
this switch
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