SMA SUNNY CENTRAL Maintenance manual - Manual (Page 51)

SMA Solar Technology AG Checking protective devices
Maintenance Manual SCWAR-WEN094020 51
6.6.1 Replacing the GFDI
In case the mechanical or optical check is not fulfilled or in accordance with the maintenance
protocol, f´the GDFI must be replaced. Replacement is also necessary after at least after 100 ground
faults which led to the tripping of the GFDI.
6.7 Maintaining the soft grounding
Maintenance work of the soft grounding is carried out after checking the GFDI. Once tripped,
manually reset the failure via the button.