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