4 battery operation, 5 protection equipment connections – GE Industrial Solutions SG Series UL LISTED BATTERY CABINETS User Manual
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Installation and O&M manual for SG battery cabinets - OPM_SGS_XXU_ISG_BAT_XUS_V020.doc
Installation Guide SG Series UL Battery cabinets
5.4 BATTERY
OPERATION
The separate battery manufacturer’s manual, available on the battery manufacturer’s Web site, provides the
necessary information for the installation, operation, charging and maintenance of the battery. Use the battery
manual in conjunction with this manual.
For models with nominal 240-cell battery, the DC bus nominal float voltage range is 527 to 576 VDC. For
maximum equalize voltage see battery manufacturer data sheet. Battery voltage at end of discharge is 400.8
VDC at the battery.
Every 8°C (15°F) increase in temperature reduces the battery life by 50%. Once the battery is damaged by heat
its capacity cannot be improved.
Every 8°C (15°F) decrease in temperature reduces the battery life by 50%.
5.5 PROTECTION
EQUIPMENT CONNECTIONS
10-300kVA
Each battery system is supplied with a circuit breaker in the master cabinet and fuses in the secondary battery
cabinets.
400-750kVA
Each battery cabinet is supplied with a circuit breaker.
The transition cabinet, for the 750KVA, is supplied with 2-2000A rated semiconductor protection fuses. These
fuses are bolted to the landing plates with 3/8-16 Grade-8 hardware. The torque value for the hardware is 40-
44 ft. lbs.
UPS Cabinet KVA
Fuse/Circuit Breaker (CB)
Fuse Size CB Size
CB Torque Value
SG
27"
10 1 Fuse mod in each cab + 1 CB mod in Master
35 30
SG
27"
20 1 Fuse mod in each cab + 1 CB mod in Master
60 60
SG
27"
30 1 Fuse mod in each cab + 1 CB mod in Master
80 80
SG
27"
40 1 Fuse mod in each cab + 1 CB mod in Master
100 100
SG
27"
50 1 Fuse mod in each cab + 1 CB mod in Master
125 125
SG
27"
80 1 Fuse mod in each cab + 1 CB mod in Master
200 200
SG
27"
100 1 Fuse mod in each cab + 1 CB mod in Master
250 250
SG
27"
120 1 Fuse mod in each cab + 1 CB mod in Master
300 300
SG
27"
150 1 Fuse mod in each cab + 1 CB mod in Master
400 400
SG
27"
225
1 Fuse mod + 1 CB mod in each cab
300
300
SG
27"
300
1 Fuse mod + 1 CB mod in each cab
400
400
See circuit breaker
for the value