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9155 UPS (8–15 kVA) User’s Guide S 164201553 Rev D www.powerware.com
Table 21. Battery Specifications
Battery Type
9 Ah sealed, valve -regulated lead acid (VRLA), maintenance-free, minimum 3-year
float service life at 77°F (25°C), voltage 192 Vdc (96 cells per string)
Number of Strings
Maximum of 22 strings per full configuration, including UPS batteries (4 EBM-64
cabinets or 3 EBM-96 cabinets, plus UPS batteries)
UPS-32: 2 strings; UPS-64: 4 strings
EBM-64: 4 strings; EBM-96: 6 strings
Battery Replacement
Must be replaced by qualified service technician
Charger
Service c onfigurable 0.5–34A per string, with overall maximum of 34A (limited by
input current). Default: 3.4A per string
Charging
Internal battery: approximately 3 hours to 80% usable capacity at nominal line
voltage after full load discharge
External battery: no more than 10x discharge time to 90% usable capacity at
nominal line voltage after full load discharge
Start-on-Battery
Allows start of UPS without utility input
Performance
ABM technology increases battery service life, optimizes recharge time, and
provides a warning before the end of useful battery life
Protection
Extended Battery Module output protected by 100A circuit breaker
Table 22. Battery Runtimes (in Minutes) at Full Load
2-High Cabinets
Load
32 Internal UPS
Batteries
(1) EBM-64 (2) EBM-64 (3) EBM-64 (4) EBM-64
15 kVA/13.5 kW 4 23 43 65 88
12 kVA/10.8 kW 6 30 56 85 116
10 kVA/9 kW 8 37 69 106 144
8kVA/7.2kW 11 49 91 139 189
3-High Cabinets
Load
64 Internal UPS
Batteries
(1) EBM-96 (2) EBM-96 (3) EBM-96
15 kVA/13.5 kW 13 43 76 113
12 kVA/10.8 kW 18 56 101 149
10 kVA/9 kW 22 69 124 184
8kVA/7.2kW 29 91 164 242
NOTE Battery times are approximate and vary depending on the load configuration and battery charge.