6.4 Battery Test Procedures
The battery test function is disabled by default. If you need this function, please contact the customer service engineer of
Vertiv.
The battery self-test includes periodical self-test and manual maintenance self-test. When the load factor is 0 to 20%, the
system only supports manual maintenance self-test; when the load factor is 20% to 100%, the system supports periodical self-
test and manual maintenance self-test. The battery discharges 20% of total battery energy.
Periodical self-test is to test the battery activity. The periodical self-test is regular, and the self-test period can be configured
via the Vertiv software setting. During the periodical self-test, if the battery maintenance requirement is met, the system will
generate audible/visual alarm and corresponding records. The periodical self-test does not update the battery curve table.
The mode of the manual maintenance self-test is similar to that of the periodical self-test, except for the maintenance self-
test mode is started manually, and this operation is valid only one time, that is the system will not automatically start up the
self-test once you exit. During the maintenance self-test, if the battery maintenance requirement is satisfied, the system will
generate audible/visual alarm and corresponding records. The maintenance self-test does not update the battery curve table.
N O T E: The p eriodical self-test shou ld satisfy the conditions of battery float charg e at least 5 h, and
generator not con nected , while the m anu al m aintenance self-test just satisfies the conditions o f
battery fully charged.
Method
1. Manual maintenance self-test: via the TOUCH SCREEN.
2. Periodical self-test: self-test period can be configured via the Vertiv software setting. The range of battery self-
test period is 30 days to 360 days (default: 60 days).
Self-test startup conditions
1. System load rate is within 0 to 20% (manual maintenance self-test) or 20% to 100% (periodical self-test), stable
output.
2. Battery in fully charged state, battery float charge at least 5 h, and generator not connected.
3. Current system is in float charge state.
Self-test exit conditions
1. Confirm that the system is not in self-test state at least 10 seconds, and satisfies the following conditions: in
battery mode or rectifier is closed, and then the system will shift to battery supply state.
2. During the self-test, the system will shift to float charge state if the load fluctuation, UPS module overload, or no
battery occurs.
3. During the self-test, if the battery voltage is lower than the calculated pre-alarm voltage, or the battery discharge
exceeds the protection time, then the system will shift to float charge state.
4. The user can manually stop the maintenance test via the TOUCH SCREEN.
5. During the manual maintenance self-test, when the load rate ranges from 0 to 20%, the system will shift to float
charge state after the battery discharge for 5 min.
N O T E: After th e self-test is successful, the system w ill fully clear th e self-test interval counter. If the
self-test fails this tim e, then exits the system ; wh en self-test conditions are satisfied again, enters
self-test once m ore.
Procedures for battery self-test
6 Single UPS Operation Introduction
105
Vertiv™ Liebert® APM Plus User Manual
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