Section II
General Product Information
006-0006205
UPS-1500 Series
Rev ZC
18 of 60
05/28/2019
• When the AC INPUT voltage is between 105 Vrms and 90 Vrms AND the ambient temperature is
between 45
o
C and 55
o
C, the total output power that can be derived from the AC INPUT can be
calculated by linearly interpolating between the curves shown. For example, the total output
power that can be derived from the AC INPUT when the voltage is 97.5 Vrms would be 1250 W
up to an ambient temperature of 50
o
C (122
o
F) and then derate to 1125 W at 55
o
C (131
o
F).
Furthermore, there is a limited (and uncommon) range of AC INPUT voltage between 132 Vrms
and 160 Vrms in which the total output power that can be derived from the AC INPUT is also
derated, as shown in the graph below.
1100W
0
200
400
600
800
1000
1200
1400
60
80
100
120
140
160
180
200
220
240
260
280
Output
Power
(Watts)
Input Voltage (Vrms)
Output Power vs. AC Input Voltage
(without switching over to the DC input or the battery)
Steady state
15s transient
2s transient
132V
Figure 3
Note that the full rated output power of 1250 W can be derived from the AC INPUT having a voltage
within this uncommon range for 15 seconds before the UPS will switch over to the DC INPUT or the
BATTERY PACK. Also note that the UPS can drive it full rated power for a 2 second interval even if the AC
INPUT voltage drops below 90
Vrms
.