User Manual

Initial Power Up – continued
PRELIMINARY
SC 4812ETL BTS Optimization/ATP
08/15/2000
2-12
Battery Discharge Test
Perform the test procedure in Table 2-8 only when the battery current is
less than 5 A per string. Refer to Table 2-7 on the procedures for
checking current levels.
Table 2-8: Battery Discharge Test
Step Action
1 Turn the battery test switch on the Meter Alarm Panel, ON (see Figure 2-6). The rectifier output
voltage and current should decrease by approximately 10% as the batteries assume the load. Alarms
for the Meter Alarm Panel may occur.
2 Measure the individual battery string current using the DC current probe. The battery discharge
current in each string should be approximately the same (within +
5 A).
3 Turn Battery Test Switch OFF.
Failure to turn OFF the Battery Test Switch before leaving
the site will result in low battery capacity and reduce
battery life.
CAUTION
2