Introduction
3
Powerware
®
Prestige Series Installation and Operator’s Manual for IBM Applications (6000 VA)
Uncontrolled Copy
3.
Add all of the resultant VA ratings together to obtain the total
load requirements of the equipment to be protected (see
Figure 2). If the load consists of the power-factor corrected
supplies, it is recommended to use total watts for the load
requirements.
3 COMPUTERS
3 MONITORS
EXTERNAL
MODEM
3 x 300 WATTS X 1.4 = 1260 VA
3 x 2 AMPS x 240V = 1440 VA
50 VA
1260 VA + 1440 VA + 50 VA = 2750 VA (Total Load Requirements)
300 WATTS
EACH
2 AMPS
EACH
50 VA
Figure 2. Volt-Amperes Calculation Example
If the total load requirements of the equipment exceeds the capacity of
the UPS, you must either reduce the number of pieces of equipment, or
use a UPS with a larger load capacity.
When deciding on which pieces of equipment to remove from the UPS,
select equipment that has a lower priority for power protection.
Computers, monitors, and modems typically have a higher priority
because they could be processing or transmitting data when a power
outage occurs.
