Powerware 2500 manual Battery Mode

OPERATION

Battery Mode

When the UPS is operating during a power outage, the alarm beeps once per second and the + ---indicator illuminates. The front panel displays the approximate percentage of battery capacity remaining (see Figure 32).

When utility power returns, the UPS transfers to Normal mode operation while the battery recharges.

>75%

>50%

>25%

3-Minute Warning

Shutdown Imminent

Figure 32. Battery Capacity Indicators

If battery capacity becomes low while in Battery mode, the indicator starts flashing and the alarm becomes continuous, indicating approximately three minutes of battery time remaining. When shutdown is imminent, the indicator flashes.

NOTE Depending on the UPS load, the 3-minute warning may occur before the batteries reach 25% capacity; the front panel immediately displays the 3-minute warning. For UPS and Extended Battery Module (EBM) runtimes, see Table 10 on page 62.

These warnings are approximate, and the actual time to shutdown may vary significantly. Once these warnings are indicated, immediately complete and save your work to prevent data loss and similar difficulties.

When utility power is restored after the UPS shuts down, the UPS automatically restarts.