ABB PCS100 UPS-I - Calculation of Autonomy Time

46 PCS100 UPS-I User Manual
15
20
25 30 35
40
0
2
4
8
6
10
14
12
16
Operating Temperature (ºC)
Design Life (Years)
18
Recommended temperature
operating zone
Figure 6-6: Design Life vs. Operating Temperature graph
6.1.4 Calculation of Autonomy Time
The autonomy period for a load level other than those given in the tables can be calculated using the following
information and graphs.
Example:
Application’s requirements
Load
500 kVA
Power Factor
0.9
Supply
400 V, 50 Hz
Storage autonomy
Short time autonomy
To use the Storage Loading vs. Autonomy Period graph below the Relative Loading (%) of the energy storage
must be calculated.