Normal Operation Of The Arc Fault Detection Unit; Responding To An Arc Fault - Advanced Energy AE 3TL 600 Series Installation And Operation Manual

Advanced Energy
NORMAL OPERATION OF THE ARC FAULT
DETECTION UNIT
In normal operating circumstances, the arc fault detection unit monitors the current
flow and analyzes the signal being measured to determine if there is an arc fault
situation. The unit will do this continuously until an arc fault occurs or the DC power
supply is removed.
During normal operation, the following should be considered:
• Make sure that the alarm can be easily heard, and that proper follow-up is
assured.
• Check the system monthly for faults.
To Operate the ADU in Normal Conditions
1. Close the lid of the connection box.
2. Turn the DC disconnect to the ON position.
If the solar modules are receiving sufficient sunlight and no fault exists, the
following sequence will occur:
◦ A quiet beep is emitted.
◦ The Power LED blinks.
3. Verify that the self-test procedure is complete by confirming that the Power
LED is continuously lit.

RESPONDING TO AN ARC FAULT

When an arc fault is detected by the ADU, the inverter will provide the following
signals:
• The FAULT LED blinks.
• A buzzer sounds for 30 seconds.
After the first 30 seconds, the buzzer will beep once a minute.
To Resolve an Arc Fault
1. Resolve the cause of the arc fault.
2. Press the ESC button on the inverter to confirm the arc fault is resolved.
Monitoring will resume.
6‑2 Operating the Arc Fault Detection Unit 570-1003552-05A