UPS Operation

Operating Modes

Utility Power

After you install and apply power to the UPS, the UPS filters and regulates incoming AC power, eliminating noise and voltage spikes, and provides consistent power to your equipment (see Figure 7). While power is applied to the UPS, the maintenance-free battery is automatically kept in a fully-charged condition.

Bypass Line

Surge

Suppression Rectifier Inverter

EMI/RFI Filters

UPS Load

Outlets

Optional Battery Cabinets

Battery

Charger

Battery

Battery

Battery

Figure 7. UPS Block Diagram

Normal Mode

During Normal mode, the •indicator illuminates and the front panel displays the percentage of UPS load capacity being used by the protected equipment (see Figure 8).

OVERLOAD

SITE FAULT

OVERTEMP

BATTERY

SELF TEST

LOAD ON

LOAD ON

LOAD ON

LOAD ON

LOAD OFF

APPROX.

APPROX.

APPROX.

APPROX.

NORMAL

81-100%

61-80%

41-60%

0-40%

UTILITY

LOAD

LOAD

LOAD

LOAD

 

Figure 8. Normal Operation Indicators

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Powerware® 9 Prestige Series User’s Guide (600 VA - 1800 VA) : www.powerware.com