User's Manual

044-05156 Rev C 37
Rectifier Subrack Pin Assignments
PIN Description PIN Description
1 5 Vbs 9 AC fail
2 5 Vbs rtn 10 V prog
3 Module Detect 11 V1 sense
4 Pgood 12 I monitor
5 On/off 13 Tem OK
6 I share 14 Rtn Sense
7 Mod-Ena 15 No Connection
8 0VP tp
4.8.2 Batteries
Should the AC input power fail for any reason, four 12 Vdc, 105 AH (rated 8-hour capacity) deep discharge Valve-
regulated Lead-Acid batteries provide 24 Vdc power for the entire cabinet. The LVD controller will accommodate
other battery ratings, however, it is factory set for this battery.
The batteries provide a minimum of 12 minutes battery backup time at 25 deg C when presented with the full
cabinet load. The batteries have a wide operating temperature range of –40 to +60 deg. C. The nominal charge
voltage = 2.27-2.30V/Cell or 27Volts @ 25°C with temperature compensation.
nSubtract 3mV/ °C from +25 to +60°C
nAdd 3mV/ °C from +25 to -40°C
Battery Backup Time
No. of G3S-1900-125
Modules
MCPA
Amperes
1 Battery String
(Minutes)
2 Battery Strings
(Minutes)
1 52.8 90 210
2 105.6 37.5 90
3 158.4 20 52
4 211.2 12 37.5
5 264.0 7 26
6 316.8 4 20
Note The charge rate of the batteries is set for C/10 for the batteries delivered with the system. If for any
reason a different type of battery is installed in the system, charge must be changed to avoid
improper charging of the batteries.