GE Industrial Solutions CPS6000 - Manual (Page 193)

CPS6000 –48V Indoor/Outdoor Power Shelf
Issue 21 January 2008
193
temperatures monitored between this point and the Lower Thermal Limit (ltt) will result in a
proportional increase of plant voltage to a level corresponding to (lsp*(ntt-ltt)*24)V above the
fsp at the ltt.
Upper Temperature Slope (usp): The slope rate for the voltage decrease per cell when the
battery temperature is above the ntt (Battery Thermal Slope Nominal Temperature).
Upper Temperature Limit (utt): The upper temperature where Battery Thermal
Compensation will have reduced plant voltage to a level corresponding to (usp*(utt-ntt)*24)V
below the fsp. Plant voltage will be reduced proportionally at any temperature between this
point and the Battery Thermal Slope Nominal Temperature (ntt).
Battery Thermal Alarm Threshold (thr): A monitored battery temperature above this
threshold results in a Battery Thermal alarm with a PMN severity.
Battery Thermal Step Temperature (spt): A monitored battery temperature above this
threshold results in an additional 4.08V “step” decrease in plant voltage.
Plant Battery Test
The following is a list of plant battery test parameters that can be configured in the controller.
The result of the Plant Battery Test is available in the “Batteries” sub-menu of the “Status”
menu.
Manual Test: Permits manually starting a battery discharge test. The test can be set to end on
either of the following two parameters.
Duration: The duration of the test can be set from 0.1 hours to 99.9 hours.
Cutoff Cell V: The test can be set to end when battery cell voltage reaches this cutoff
voltage. Cutoff voltage can be set from 1.5V to 2.0V.
Automatic Test: This utility offers the flexibility of running pre-programmed battery tests at
specific times and days, and for specific durations.
Automatic Test: Enable or disable automatic periodic running of the battery test. The factory
default setting is disabled.
Interval: The test interval (time between tests) can be set from 1 to 18 months in 1 month
increments. The factory default setting is 12 months.
Next Test: Enter a particular day in dd-mm-yy format to automatically run the battery test on
that day.
Start Time: Enter a particular time in hh-mm format to automatically run the battery test at
that time. The setting can configured from 0 to 23 hours. 00:00 is midnight.
Hours from BD: Time interval needed to elapse since the last Battery on Discharge alarm
before a battery test can be performed. This can be set from 0 to 240 hours in 1 hour
increments. The factory default setting is 72 hours.