Section II
General Product Information
006-0006205
UPS-1500 Series
Rev ZC
17 of 60
05/28/2019
0
200
400
600
800
1000
1200
1400
25
30
35
40
45
50
55
Output
Power
(Watts)
Air Temperature (°C)
UPS Output Power vs. Air Temperature
V
AC(IN)
>105 V
RMS
or V
DC(IN)
>22 V or
power drawn from the battery
V
AC(IN)
= 90 V
RMS
and V
DC(IN)
<22 V and
power not drawn from the battery
V
AC(IN)
= 80 V
RMS
and V
DC(IN)
<22 V and
power not drawn from the battery
Figure 2
• If the AC INPUT voltage is above 105 Vrms, then the UPS can deliver its full rated output power
of 1250 W from the AC INPUT for an ambient temperature as high as 55
o
C (131
o
F) without
needing to switch over to the optional DC INPUT or the internal BATTERY PACK.
• If the AC INPUT is between 90 Vrms and 80 Vrms then the total output power that can be
derived from the AC INPUT linearly decreases from 1250 W at 90 Vrms to 1000 W at 80 Vrms
(except for at the high end of the ambient temperature range – see below). For example, the
total output power that could be derived from the AC INPUT would be 1125 W at 85 Vrms as
long as the ambient temperature is not above 50
o
C (122
o
F). If the total output power is greater
than this derated value, the UPS will switch to the DC INPUT (if it is available and >22 V) or the
internal BATTERY PACK.
• If the AC INPUT voltage is 90 Vrms AND the ambient air temperature is above 45
o
C (113
o
F),
the total output power that can be derived from the AC INPUT linearly decreases from 1250
W at 45
o
C (113
o
F) to 1000 W at 55
o
C (131
o
F). For example, the total output power that could
be derived from the AC INPUT would be 1125 W at an AC INPUT voltage of 90 Vrms and an
ambient temperature of 50
o
C (122
o
F). A higher output power than this would cause the UPS
to switch over to its DC INPUT or the internal BATTERY PACK.