Chapter 1 Overview 9
Liebert EXM 80kVA ~ 200kVA UPS User Manual
1.5.2
Advanced Function
The UPS provides battery maintenance test function. At periodic intervals, 20% of the rated capacity of
the battery will be discharged automatically, and the actual three-phase load must exceed 20% of the
nominal UPS capacity. If the load is less than 20%, the automatic discharge cannot be executed. The
periodic interval can be set from 30 to 360 days. The battery maintenance test function can be disabled
through the Vertiv setting software.
Conditions: Battery at float charge for at least 5h, load equal to 20% ~ 100% of rated UPS capacity.
Trigger: Automatically, or manually through the command of battery maintenance test in
TOUCHSCREEN.
Interval: 30 ~ 360 days (default setting: 60 days).
The UPS also provides battery capacity self-test function: Periodically test the battery activity, test the
battery residual capacity, judge the battery quality, and then provide corresponding measures. The
capacity self-test is started by the user through the operator control and display panel. During the
capacity self-test, the battery will continuously discharge to the battery undervoltage shutdown threshold.
After the self-test is finished, the system will update the battery curve table. The capacity self-test
command is valid only one time, without any memory. During the capacity self-test, if the battery
maintenance requirement is satisfied, the system will generate audible/visual alarm and give
corresponding records.
Conditions: System load rate within 20% ~ 100%, battery float charge at least 5h, and generator not
connected; the current system is in float charge state.
Summary of Contents for EXM 0080kTK16FN01000
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