GE Industrial Solutions Galaxy Pulsar Edge - Manual (Page 175)

Galaxy Pulsar Edge Power System Controller
Issue 3 October 2011
175
discharge and looks for the Coup de fouet in the discharge curve and runs the discharge
for a time equal to about 20% of the system reserve capacity and calculates the
remainder.
• Amp-Hours Out: The test can be set to end when configured Amp-Hours to be removed
has been reached. This test is also bound by the test duration timed parameter.
Automatic Test: This utility offers the flexibility of running pre-programmed battery tests at
specific times and days, and for specific durations.
• Automatic Test: Select Disabled, 20% of capacity, Timed, or Amp-Hours for the
automatic Test Type for the battery test. The factory default setting is disabled.
• Months Between Test 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.
• Test Date for Next Test: Enter a particular day in configured format to automatically run
the battery test on that day.
• Test Start at Hour: Enter a particular time in hh format to automatically run the battery
test at that time. The setting can be configured from 0 to 23 hours. 00:00 is midnight.
• Delay Test Hours After 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.
Recharge Amp Limit: This section contains the settings for battery recharge current limit.
• Limit: Enable or disable battery discharge current limiting.
• Limit To: Current limit setting, from 0.5A to 1000A. The factory default setting is 25A.
During this test, the controller lowers the rectifier voltage to the rectifier voltage during test
threshold or 1.2V (0.6V for 24V systems) higher than highest configured LVD threshold when
LVDs are present. The set-point value of 1.2V plus the highest possible LVD contactor
disconnect threshold allows the controller to enact a safe DC bus voltage as not to accidentally
open any of the LVD contactors. Lowering the rectifier output voltage to rectifier voltage during
test threshold or the LVD safe voltage should create a battery on discharge condition. If the
batteries are present and healthy, the plant voltage will remain above 48V/24V and the batteries
will support the load. If the batteries are not present or are not able to support the load, the plant
voltage will immediately drop to approximately rectifier voltage during test threshold without any
consequence to the load. The Battery on Discharge alarm is masked during this test.
The test is terminated by the occurrence of any of the following conditions:
•
Initiating another Plant Battery Test. That is, once the test has been initiated, the test may
be stopped by initiating another test either through the controller.
•
An alarm condition occurring. Any alarm condition that occurs during this test will result in
the test being aborted. The test will be aborted even if there is a contact-closure still present
on the PBT inputs.