• X = clearance at the back of the UPS cabinet
• Y = clearance at the top of the UPS cabinet
Figure 8. UPS cabinet clearances.
The basic environmental requirements for the operation of the UPS system are
as follows:
• Ambient temperature range: from +0 to +40 °C
• Recommended operating range: from +20 to +25 °C
• Maximum relative humidity: 95%, non-condensing
It is required that ventilation of the UPS room is arranged. Sufficient amount of
air cooling is needed to keep the maximum room temperature rise at the desired
level:
• Temperature rise of +5 °C maximum requires the airflow of 600 m
3
per 1 kW
of losses.
• Temperature rise of +10 °C maximum requires the airflow of 300 m
3
per 1
kW of losses.
An ambient temperature from +20 °C to +25 °C is recommended to achieve a
long life of the UPS and batteries. The cooling air that enters the UPS must not
40 °C. Avoid high ambient temperature, moisture, and humidity.
For ventilation requirements, see 93PS heat rejection in Table
Table 10: 93PS Air conditioning or ventilation requirements during full load operation
Heat rejection
(BTU/h x 1,000)
Heat rejection
(kW)
Air flow
(l/s)
8 kW
1.17
0.3
70
Eaton 91PS/93PS UPS 8–40 kW
User's and installation guide
©
Eaton Corporation plc 2018. All rights reserved.
Revision: 005
Document ID: P-164000493
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