Heat rejection
(BTU/h x 1,000)
Heat rejection
(kW)
Air flow
(l/s)
10 kW
1.46
0.4
70
15 kW
2.19
0.6
70
20 kW
2.92
0.9
100
30 kW
4.38
1.3
140
40 kW
5.84
1.7
200
Table 11: 91PS 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
1.4
0.4
70
10 kW
1.7
0.5
70
15 kW
2.7
0.8
70
20 kW
3.1
0.9
140
30 kW
4.8
1.4
140
Battery locations and enclosures must be ventilated to maintain the hydrogen
concentration below the 4%
vol
safety limit. Adequate air ventilation must be
provided to locations where the UPS and batteries are located. For the 15/20kW
frame with internal batteries, the minimum air flow is 3 m
3
/hour and the
minimum free area of opening for inlet and outlet is 84 cm
2
when natural
ventilation is used. For the 30/40 kW frame with internal batteries, the minimum
air flow is 6 m
3
/hour and the minimum free area of opening for inlet and outlet is
168 cm
2
when natural ventilation is used. For larger batteries, the ventilation air
flow must be recalculated.
For the dimensions of the 91PS/93PS UPS cabinets, see Figure
.
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
38 (117)
