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ETV 1591-H
CONTROL PANEL
Page 34
24.03.2015
Battery full:
The NiMh battery can only be determined as full over a total charging time of 28 hours.
This loading time is measured in the Windows service and the status set according to
the application.
If the charging current is
≤30 mA, the UPS hardware ends the charging process before
the cycles are complete since the battery is full. This corresponds to the charging stop.
From this point, the 24 h charging stop begins (see cycles).
5.7.4
Battery Discharging Process
The discharge curve of a fully loaded battery is measured up to the deep-discharge thresh-
old. The test device is the ETV 1591-H in normal operating mode at room temperature.
After turning off the +24 V main supply, the recording begins. Deactivating the UPS after 60
seconds of buffering is disabled for this measurement.
The voltages and currents measured by the UPS were recorded during the discharge pro-
cess.
Blue curve:
battery voltage
After the first 10% of the discharge time to the deep discharge threshold, the battery
voltage has a flat curve