Exerciser Operation, Closed-Transition; Test Sequence, Closed-Transition - Kohler MPAC 1500 Manual

4. Standby source contacts open.
5. Off-to-preferred time delay runs and expires.
6. Preferred source contacts close.
7. Post-transfer load control time delays expire and
load control contacts close.
8. The engine cooldown time delay expires and the
generator set is signaled to stop (engine start
contacts open).
3.9.3 Exerciser Operation, Closed
Transition
Unloaded Exercise
The unloaded exercise sequence is the same as for
standard transition. See Section 3.6.2.
Loaded Exercise Sequence Starts
1. Exercise timer begins.
2. Engine start time delay runs and expires.
3. The generator is signaled to start (engine start
contacts close).
4. The generator starts and the standby source
becomes available.
5. Load control contacts open.
6. Check/wait for source synchronization.
Note: If the sources do not synchronize before the
Fail to Sync time delay expires, the
programmed-transition override function
operates. See Section 3.9.2.
7. When sources are synchronized, emergency
source contacts close.
8. Normal source
milliseconds.
Note: If the normal contacts do not open, the
emergency contacts will be signaled to open
and a Fail to Transfer fault will be activated.
Loaded Exercise Sequence Ends
1. Pre-transfer load control sequences run.
2. Load control contacts open.
3. Check/wait for source synchronization.
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contacts open within
Note: If the sources do not synchronize before the
Fail to Sync time delay expires, the
programmed-transition override function
operates. See Section 3.9.2.
4. When sources are synchronized, preferred source
contacts close.
5. Standby source contacts open within 100
milliseconds.
Note: If the standby source contacts do not open
within 100 ms, the extended transfer time
relay trips the standby source breaker.
6. Post-transfer load control sequences and engine
cooldown time delay expire.
7. Load control contacts close as programmed
through the Load Add settings.
8. The generator is signaled to stop (engine start
contacts open).
3.9.4 Test Sequence, Closed Transition
Unloaded Test Sequence
The unloaded test sequence is the same as for standard
transition. See Section 3.6.3.
Loaded Test Sequence is Initiated
1. Engine start time delay runs and expires.
2. The generator is signaled to start (engine start
contacts close).
3. The generator starts and the standby source
becomes available.
4. Load control contacts open.
5. Check/wait for source synchronization.
Note: If the sources do not synchronize before the
100
Fail to Sync time delay expires, the
programmed-transition override function
operates. See Section 3.9.2.
6. When sources are synchronized, emergency
source contacts close.
7. Normal
milliseconds.
Note: If the normal contacts do not open, the
emergency contacts will be signaled to open
and a Fail to Transfer fault will be activated.
source contacts open
Section 3 Operation
within 100
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