GE Industrial Solutions SG Series UL LISTED BATTERY CABINETS - Manual (Page 12)

Modifications reserved Page 13/36
Installation and O&M manual for SG battery cabinets - OPM_SGS_XXU_ISG_BAT_XUS_V020.doc Installation Guide SG Series UL Battery cabinets
Since individual battery characteristics are not identical and may change over time, the UPS module is
equipped with circuitry to equalize battery cell voltages. This circuit increases charging voltage to maintain
flooded type battery cells at full capacity.
NOTE
Do not use equalize charge on valve-regulated lead-acid (VRLA) batteries. Consult the battery manufacturer’s
manual for specific information about equalize-charging.
Basic environmental requirements for operation:
• Ambient Temperature Range: 0-40°C (32-104°F)
• Recommended Operating Range: 20-25°C (68-77°F)
• Maximum Relative Humidity: 95%, non-condensing
5.1 BATTERY CABINETS
The Battery Cabinets should be given a periodic inspection and electrical check. Checks should be performed at
least annually to ensure years of trouble-free service.
5.2 VOLTAGE RECORDS
-With the Battery Cabinet DC circuit breaker closed and the connected UPS operating, measure and record
battery float voltage.
-With the DC circuit breaker open, measure and record the nominal (open circuit) voltage.
(Both these measurements should be made across the final positive and negative terminal lugs.)
-Compare these values with those shown below. The recorded nominal voltage should be no less than the
value shown, while the recorded float voltage should be within the range shown. If a discrepancy is found,
contact GE Service Representative at 1-800-637-1738 option 3.
Battery Voltage (VDC) Number of Cells
Nominal Float
240 480 527-576
5.3 BATTERY CELL TERMINALS
Check for discoloration, corrosion and connection integrity. Clean and tighten if necessary. Note that when
installing a new battery, the initial torque value is 5 inch lbs. more than the re-torque value. Contact battery
manufacturers documentation or refer to their website for torque values.
To access battery cell terminals; disconnect the inter-tier cable and two shelf retaining screws. Once
disconnected, insulate (with protective boot or electrical tape) the cables to prevent accidental shorts.
The battery shelf can now be pulled out. Tighten each terminal connection to the re-torque value.
When replacing a battery, the terminal connections must be cleaned and tightened. Disconnect and insulate
the cables connected to the battery. Secure each battery shelf with retaining screws when maintenance is
complete.