4.4
Site preparations
For the UPS system to operate at peak efficiency, the installation site must meet
the environmental parameters outlined in these instructions. If the UPS needs to
be operated at an altitude higher than 1,000 m, contact your service
representative for important information about high altitude operation. The
operating environment must meet the height, clearance, and environmental
requirements specified.
4.4.1
Environmental considerations
Install the UPS to a temperature and humidity controlled indoor area, free of
conductive contaminants. Do not expose the UPS to direct sunlight or install it
near a heat source. The environmental requirements specified below are for the
air at the intake ports of the UPS, and are the maximum, not to exceed, ratings.
Table 8: Environmental data
Temperature range, operation
Recommended range*
0–40 °C
+20–25 °C
Temperature range, storage and
transportation
-25–+55 °C
Relative Humidity
Recommended range*
5–95 %
20–60 %
Condensation
No
Maximum rate of temperature change**
1.67 °C/5 min
Operating altitude
1000 m without derating
Up to 2000 m with derating
Pollution degree
2
* Note: For maximum lifetime for UPS and batteries, keep the environment in the
recommended range.
**Note: Limit based on ASHRAE 90.1-2013. Rapidly increasing temperature may cause
condensation on colder surfaces.
•
Do not expose the UPS to overly aggressive environments, like salt mist or
corrosive gases. High relative humidity will accelerate the effects of
contaminants. UPS should be installed in a G1 environment (based on ANSI/
ISA S-71.04 classifications). Use in a more aggressive environment can lead
to reduced product life and possibly early failure. If the installation location
does not meet the recommended environment, contact Eaton service
representative for further information.
© Eaton Corporation plc 2020. All rights reserved.
Revision: 006
Document ID: P-164000493
37 (126)
Eaton 91PS/93PS UPS 8–40 kW
User’s and Installation Guide