APC Battery Management System - Manual (Page 34)

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USER’S GUIDE
Battery Management System
27
Configuration menu
Battery Type Selection.
Choose nickel-cadmium or lead-acid batteries.
Battery Configuration.
Charger Type (Silcon/
Other) A Silcon unit can have two strings per battery management
master unit.
Other requires a battery management master unit
for each new string.
Number of Strings The number of strings in the system. Silcon may have two
battery strings, all other systems will have one.
Number of Batteries
per String The number of batteries in each string in the system. The
maximum number of batteries per string is 244 lead-acid
batteries or 375 nickel-cadmium batteries for a non-APC
Silcon UPS..
Number of Cells per
Battery The number of cells per battery for nickel-cadmium batteries
is 1 or 2. The number of cells per battery for lead-acid
batteries is 1, 2, 4, or 6.
Monitor Wire Length Choose either >50 feet or <50 feet.
Cell Max Voltage
Limit The maximum recommended voltage per individual battery
cell. This number multiplied by the total number cells in a
string equals the alarm value for the string. A charger alarm
occurs if the string voltage exceeds the alarm value.
Cell Min Voltage Limit The minimum recommended voltage per individual battery
cell. This number multiplied by the number of total cells in a
string equals the alarm value for the string. A charger alarm
occurs if the string voltage falls below the alarm value.
Battery Capacity Enter battery capacity in amp-hours for reference. The amp-
hour capacity of a battery should be clearly marked on the
actual battery.