Powerware Plus 80 - Battery Mode

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Battery Mode
The UPS transfers to Battery mode automatically if a utility power outage occurs, or tithe
utility power does not conform to specified parameters. In Battery mode, the battery
provides emergency DC power, which the inverter converts to AC power. When the UPS
switches to Battery mode, its alarm indications depend on the cause and on the battery
charge state. The length of time the system can operate in Battery mode depends on
loading and the battery supply capacity.
Figure 5 shows the path of electrical power through the UPS system when it is operating in
Sanely mode.
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When the diiarging battery voltage reaches the lower limit of UPS operation capability,
MeuitkalloadtraMfen
to Bypass mode f it is available. If Bypass input is not available.
a “Shutdown Imminm warning occurs. The warning time before critical load loss occurs
is approximatefy 1 minute, depending on battery capa&ty and the amount of loading.
tf incoming power rehrms to within specified parameters, the UPS automaticaffy returns to
Normal mode and alarm indications dear. However, the process of returning to Normal
mode is not instantaneous. The rectifier gradually draws increasing power from the
incoming utility until Normal mode is achieved.
Powerware
Plus
50
UPS
MafIUal