Eaton 91PS User And Installation Manual page 34

Eaton 91PS/93PS UPS 8-10 kW
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
kW of losses.
• Temperature rise of +10 °C maximum requires the airflow of 300 m
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
exceed +40 °C. Avoid high ambient temperature, moisture, and humidity.
For ventilation requirements, see 91PS/93PS heat rejection in Table
Table 8: Air conditioning or ventilation requirements during full load operation
8 kW
10 kW
Battery locations and enclosures must be ventilated to maintain the hydrogen
concentration below the 4%
provided to locations where the UPS and batteries are located. For the 91PS/
93PS UPS 8–10 kW with internal batteries, the minimum air flow is 1.5 m
and the minimum free area of opening for inlet and outlet is 42 cm
ventilation is used. For larger batteries, the ventilation air flow must be
recalculated.
©
Eaton Corporation plc 2018. All rights reserved.
Heat rejection
(BTU/h x 1,000)
1.17
1.46
safety limit. Adequate air ventilation must be
vol
Revision: 003 Document ID: P-164000672
User's and installation guide
3
/h per 1
3
/h per 1
8
.
Heat rejection
(kW)
0.3
0.4
3
/hour
2
when natural
34 (102)