ABB GPS4827, User Manual

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Page 75
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4.
Observe:
• The plant voltage increases to the set voltage
• Power Minor alarm (PMN) is generated
• RECT and MIN LEDs are illuminated
5.
Using the Float Settings Menu Screens, select Set Point.
6.
Use the Arrows, and UP/DOWN keys to change the system float
voltage setpoint to it ’ s original value. Press ENTER to save.
7.
Observe:
• The plant voltage decreases to the original set voltage
• Power Minor alarm (PMN) retires
• RECT and MIN LEDs are extinguished
High Float Voltage Alarm – Systems with Actual Loads
Step
Action for Testing the High Float Voltage Alarm
NOTE
Clear all controller alarms for this test.
NOTE
The System Voltage WILL NOT change.
NOTE
The high float voltage alarm test is completed by changing the
threshold for this condition below the system voltage to make it active.
1.
Using the Float Settings Menu Screens, select Set Point and note the
value..
2.
Using the Voltage Alarms Menu Screens, note the High Float Alarm
threshold value..
3.
Use the Arrows, and UP/DOWN keys to change the High Float Alarm
Threshold to 0.1V below the System Voltage. Press ENTER to save.
4.
Observe:
•
Power Minor alarm (PMN) is generated
• RECT and MIN LEDs are illuminated
5.
Using the Voltage Alarms Menu Screens, change the High Float Alarm
threshold value to it ’ s original value. Press ENTER to save.
6.
Observe:
•
Power Minor alarm (PMN) retires
• RECT and MIN LEDs are extinguished
STEP
Action for Testing High Voltage Shutdown Alarm
NOTE:
The High Voltage Shutdown Test is recommended only for new installations where a dummy load is
available prior to the application of office load, and batteries are connected.
NOTE:
There are three requirements for a serial rectifier to shut down upon a controller initiated High Voltage
Alarm.
High Voltage Shutdown – New Installations Only