UPS Operation

Bypass Mode

The µindicator and the indicator illuminate simultaneously, indicating Bypass mode (see Figure 21). When the UPS is in Bypass mode, the load is powered by utility power. However, utility power continues to be passively filtered by the UPS.

OVERLOAD

SITE FAULT

OVERTEMP

BATTERY

SELF TEST

LOAD ON

UNIT ON

BYPASS

Figure 21. Bypass Operation Indicators

Battery Mode

When the UPS is operating during a power outage, the alarm beeps several times initially, and then once every 10 seconds while in Battery

mode. The indicator illuminates. The front panel displays the approximate percentage of battery capacity remaining (see Figure 22). When the utility power returns, the UPS switches to Normal mode operation while the battery recharges.

OVERLOAD

SITE FAULT

OVERTEMP

BATTERY

SELF TEST

BATTERY

BATTERY

BATTERY

BATTERY

BATTERY

ONLINE

ONLINE

ONLINE

ONLINE

ONLINE

>75%

>50%

>25%

LOW

SHUTDOWN

CAPACITY

CAPACITY

CAPACITY

BATTERY

IMMINENT

REMAINS

REMAINS

REMAINS

WARNING

 

Figure 22. Battery Operation Indicators

If battery capacity becomes low while in Battery mode, the Battery Fault indicator begins to flash and the Self Test indicator remains lit, indicating approximately two minutes before UPS shutdown. The alarm beeps every two seconds.

Powerware® 9 Prestige Series User’s Guide (4500/6000 VA) S Rev H www.powerware.com

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