33
Appendix C: Performance rate tables
Appendix D: Derating factors for sizing
f
T
– derating factor for temperature between 10ºC (50ºF) and 25ºC (77ºF).
No derating factor is applied over 25ºC. Use either f
T
or f
Th
, both should not be applied.
Lowest temperature (ºC)
Derating factor (f
T
)
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
100%
99%
98%
97%
96%
95%
94%
93%
92%
91%
90%
2-hour rate
4-hour rate
8-hour rate
Performances are based on the typical capacity C
8
= 77 Ah
Per module
42 V
end voltage
Autonomy (hours)
2
3
4
8
10
12
16
24
Amps
37.4
25.1
19.0
9.63
7.74
6.48
4.89
3.24
Watts
1810
1229
933
485
389
326
248
164
Avg V
48.5
48.9
49.2
50.4
50.4
50.4
50.7
50.7
Per module
42 V
end voltage
Autonomy (days)
1
2
3
4
5
Amps
3.24
1.59
1.04
0.76
0.60
Watts
164
81
53
39
30
Avg V
50.7
50.7
50.7
50.7
50.7
Performance rate tables include:
- f
IL
(~ 2 % of rated Ah per 24 hours of runtime)
- 56 V charge to fully charged state at 25˚C (77˚F)
- 42 V cut-off at end of discharge and 25˚C (77˚F) at the beginning of discharge
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