GE Industrial Solutions GPS4827 User Manual
Page 78
Galaxy Power System GPS4827
76
in a plant configured for “Centralized Architecture.”
1.
Using a calibrated DVM, measure the plant load from the sense
connection points on the plant shunt(s).
2.
Calculate the plant load, in amperes, as measured by the DVM.
a) Divide the mV DVM reading by the rated shunt mV value
b) Multiply this result by the shunt ampere rating
This value is the plant load measured by the DVM, in amperes.
3.
Using the Meter Calibration Menus, reset the plant Plant Current
reading by selecting RESET LOAD. Press the Enter key to reset the
Load. This will remove any pre-existing user calibrated values if they
exist.
4.
Wait at least 5 seconds and press the ESCAPE key.
5.
Select CALIBRATE LOAD. Use the Arrows, and UP/DOWN keys to
calibrate the system Load. Press ENTER to save.
NOTE:
The maximum total change is +/-10% of the cuurent load value.
6.
Press the <ESCAPE> key until the default screen is displayed. Verify
that the plant current reading has been changed.
NOTE:
This operation is performed and verified ONLY if plant load is constant
during the calibration procedure.
Observation:
Displayed System load changes to new value.
High Float Voltage Alarm – New Installations
Step
Action for Testing the High Float Voltage Alarm
NOTE:
Clear all controller alarms for this test.
NOTE:
The high voltage alarm test is completed by raising the plant voltage
above the threshold set for HFV (High Float Voltage) .
NOTE:
Raising the plant voltage on a working system is left to the discretion
of the user.
This test could disrupt power to working equipment.
If the test is performed, verify that the plant is in FLOAT
mode
Rectifier voltage has been set to the normal level after
completing the test.
1.
Using the Voltage Alarms Menu Screens, note High Float Alarm
threshold value. _________
2.
Using the Float Settings Menu Screens, select Set Point and note the
value. ________
NOTE:
The next step WILL RAISE the system voltage.
3.
Use the Arrows, and UP/DOWN keys to change the system float
voltage setpoint to 0.1V above the High Float Alarm Threshold.. Press
ENTER to save.