Galaxy PW™ UPS 100 to 225kVA

4.2.2Operation with the Normal AC Source Down

In the event of a normal AC source failure or voltage outside specified tolerances of ±10% in amplitude (±15% optionally), the rectifier/charger (A) stops and the battery (D) supplies the necessary backup power to the load via the inverter (B).

The battery, float-connected between the rectifier/charger and the inverter, discharges during this operating mode:

◗lights 2 , 4 and 5 shine green.

The user is warned of battery operation by the slow beeping of the buzzer 6 , see Figure 4-6, and the message "LOAD PROTECTED, BATTERY DISCHARGING", followed by the remaining backup time and the percent load.

This information is also available via volt-free changeover contacts for remote control devices.

Figure 4-6: Normal AC Source Indicator Diagram.

2 45

1

2

A B

1

D

C

2

4 — 4

Operation

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