Emerson Liebert NXL 250 kVA - Figure 19 Battery Equalize Settings

Operation
17 Liebert
®
NXL
™
Battery Management
These DC source settings can be changed from the touchscreen. Press the box to the left of each
parameter to bring a popup window that will allow the parameter to be changed.
Battery Equalize
When Battery Equalize is activated (Manual Battery Equalize button under Batt Mgt), the module
will charge the batteries to the Equalize Voltage for the length of Equalized Time.
• Equalize Voltage, Vpc - 2.30 to 2.45 (default: 2.3)
• Equalize Time, hours - 0 to 200hours (default: 0)
Figure 19 Battery Equalize settings
Battery Test
• Auto Test—Enable/Disable (default: disabled)
• Test Cycle, weeks—1 to 26 (default: 13 weeks)
• Time of day, hh:mm—Set Hour and Minute; sets the start time of the automatic battery test
• Start Date, mm dd, yyyyy—Set Month, Day and Year
• Test Duration, minutes—0.5 minute to 30% of full load Operating Time (default: 0.5 minute)
• Minimum Battery Voltage, lead-acid only—1.75VPC to 1.95VPC (default: 1.75VPC); this is the
minimum voltage the battery test will stop.
Low Battery Warning Time
• Low Battery Warning Time, minutes—2 to 60, the upper limit is dependent on configured
batteries (default: 5 minutes)
Battery Temperature
• Battery Temp Warning—30°C to 50°C (default: 40°C)
• Battery Temp Limit—35°C to 60°C (default: 50°C)
• Disconnect—Enable/Disable (default: disabled)
NOTE
Battery Equalize must be enabled by service to be functional. If Battery Equalize is disabled,
the feature will not be available and the menu item will not be displayed.
NOTE
If Disconnect is set to Enable and the Battery Temp Limit is met, the Battery breaker will open.