Kohler MPAC 1500 Manual page 16

Note: If the standby source fails during a loaded test,
the ATS will immediately attempt to transfer to the
preferred source.
Automatic Operation Test Procedure
1. Check the controller LED indicators to verify that
the Position N and Source N Available indicators
are lit.
2. Verify that the generator set master switch is in the
AUTO position.
3. Refer to Figure 2-2. From the main screen, press
the Test button. Enter the test password when
prompted and press OK.
4. Press the down arrow button to display Type of Test
Loaded.
5. Press the Start button.
6. Verify that the generator set starts and the Source
E Available LED lights.
7. Verify that the switch transfers the load to Source E.
Observe the controller LEDs and display as the
time delays execute and the load is transferred.
a. Standard-Transition
preferred-to-standby transfer time delay, verify
that the Position N LED turns off and the
Position E LED lights, indicating that the switch
has transferred the load to Source E.
b. Programmed-Transition Models:
preferred-to-off time delay, verify that the
Position N LED turns off.
off-to-standby time delay, check that the
Position E LED lights, indicating that the switch
has transferred the load to Source E.
c. Closed-Transition Models: See Section 3.10.3.
After the preferred-to-standby time delay, the
controller monitors
synchronization.
sync, the ATS transfers the load to Source E
and the Position E LED lights. Both sources will
be connected for less than 100 milliseconds
before Source N is disconnected and the
Position N LED turns off.
If the sources do not synchronize before the fail
to sync time delay expires, operation depends
on the programmed transition override setting.
If automatic override is enabled, the ATS will
transfer the load using a programmed-
16 Section 2 Operation Tests
Models: After
After the
After the
the sources
When the sources are in
transition transfer. If automatic override is not
enabled, the ATS will continue to monitor the
source synchronization and transfer when/if
the sources synchronize. The operator can
initiate
(password required) or cancel the transfer.
8. Press the End Test button.
9. Verify that the switch transfers the load back to
Source N.
a. Standard-Transition
standby-to-preferred time delay, verify that the
Position E LED goes out and the Position N
LED lights, indicating that the switch has
transferred the load to Source N.
b. Programmed-Transition Models:
standby-to-off time delay, verify that the
Position E LED goes out.
preferred time delay, check that the Position N
LED lights, indicating that the switch has
transferred the load to Source N.
c. Closed-Transition Models: See Section 3.10.3.
After the standby-to-preferred time delay, the
controller
synchronization.
the
sync, the ATS transfers the load to Source N
and the Position N LED lights. Both sources will
be connected for less than 100 milliseconds
before Source E is disconnected and the
Position E LED turns off.
If the sources do not synchronize before the fail
to sync time delay expires, operation depends
on the programmed transition override setting.
If automatic override is enabled, the ATS will
transfer the load using a programmed-
transition transfer. If automatic override is not
enabled, the ATS will continue to monitor the
source synchronization and transfer when/if
the sources synchronize. The operator can
for
initiate
(password required).
10. After the engine cooldown time delay expires, the
engine start signal is removed. Verify that the
generator set stops.
Note: The generator set may have an engine
cooldown time delay that causes the
generator set engine to run after the transfer
switch engine start signal is removed.
This completes the functional tests.
a programmed-transition
Models:
After the off-to-
monitors the sources
When the sources are in
a programmed-transition
TP-6714
transfer
After the
After the
for
transfer
4/10