SMA STP 33-US-41 - Activating or Deactivating the Arc-Fault Circuit Interrupter (AFCI); Activating String-Failure Detection

4 Operation
SMA Solar Technology AG
User ManualSTP33-62-US-41-BA-en-1140
2. Click on Diagnosis in the menu.
3. Select the required MPP tracker.
4. Click on [Start new measurement].
5. Go to [PDF export] or [CSV export] to export the data shown.
4.19 Activating or Deactivating the Arc-Fault Circuit
Interrupter (AFCI)
The basic procedure for changing operating parameters is explained in another section (see
Section4.11 "Changing Operating Parameters", page34).
Deactivating the Arc-Fault Circuit Interrupter (AFCI)
Procedure:
• Select the parameter AFCI switched on or AfciIsOn and set to No.
Activating the Arc-Fault Circuit Interrupter (AFCI) with Operation Inhibition
When the arc-fault circuit interrupter is active and an electric arc is detected, the inverter interrupts
the feed-in operation and an operation inhibition occurs. The operation inhibition must be reset
manually if the inverter is to feed into the grid again (see Section6.4, page65).
Procedure:
• Select the parameter AFCI switched on or AfciIsOn and set to Yes.
Activating the Arc-Fault Circuit Interrupter (AFCI) without Operation Inhibition
When the arc-fault circuit interrupter without operation inhibition is active and an electric arc is
detected, the inverter interrupts the feed-in operation. No operation inhibition occurs. After a
waiting period, the inverter starts automatically and checks whether the electric arc is still present. If
the electric arc is still present, the inverter disconnects from the grid again and the process is
repeated.
• Select the parameter AFCI switched on or AfciIsOn and set to Yes, without permanent
operation inhibition.
4.20 Activating String-Failure Detection
1. Activate the user interface (see Section4.1, page21).
2. Log into the user interface as an Installer.
3. On the right-hand side of the menu bar, select the menu User Settings (see Section4.3 "Start
Page Design of the User Interface", page27).
4. In the context menu, select [Starting the installation assistant].
5. Select [Save and next] until you reach the String configuration step.
6. Activate string-failure detection and configure it as required.