SMA ArcFix
SMA ArcFix is an Arc Fault Circuit Interrupter (AFCI). With this function, the inverter effectively detects arcs on the DC side and interrupts them.
A detected electric arc causes the inverter to interrupt feed-in operation. To restart feed-in operation, the operational disruption which has occurred, must be reset through a manual restart. Alternatively, the arc-fault circuit interrupter can be activated without inhibiting operation. Depending on the country data set, arc fault detection is activated or deactivated by default. If the installation conditions permit this, you can change the default setting.
Arc-fault circuit interrupter without permanent operation interruption
If the arc-fault circuit interrupter (AFCI) is configured with automatic restart, the system should be monitored closely and recurring faults in the AFCI should be investigated immediately by qualified persons. If it is not possible to identify the cause of the error, the inverter should be taken out of operation until the investigation and corrective action can be completed. Recurring errors may cause damage to neighboring conductors and system components, which could result in more extensive system failures and damage and even to uncontrolled electric arcs and fires.
SMA ArcFix complies with the requirements of the IEC 63027 and corresponds to the following installation classes:
F-I-AFPE-1-6-1
F-I-AFPE-2-3-1
Also see: