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 0~20%, the
system only supports manual maintenance self-test; when the load factor is 20%~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 setting software. 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. When the load factor is 20%~100%, 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: T he periodical self-test should satisfy the conditions o f battery float charg e at least 5h, and
generator not connected, while the m anual m aintenance self-test just satisfies the conditions o f
battery fully charged.
Achievem ent
1. Manual maintenance self-test: via the TOUCHSCREEN.
2. Periodical self-test: self-test period can be configured via the Vertiv setting software. The range of battery self-
test period is 30 days ~ 360 days (default: 60 days).
M anual m aintenance self-test startup conditions
1. System load rate is within 0 ~ 100%, stable output.
2. Battery in fully charged state, battery float charge at least 5h, and generator not connected
3. Current system is in float charge state
Periodical self-test startup conditions
1. System load rate is within 20% ~ 100%, stable output.
2. Battery in fully charged state, battery float charge at least 5h, and generator not connected
3. Current system is in float charge state
Self-test exit con d itions
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, 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 TOUCHSCREEN.
5. During manual maintenance self-test, when the load factor is 0~20% the battery will reach EOD after discharging
for 5min, then the system goes to float charging state.
6 Single UPS Operation Introduction
114
Vertiv™ Liebert® EXM2 UPS User Manual
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