Replacing the string fuses (versions S2F / S2X)
Replacing the string protection fuses in inverter versions S2F/S2X may
be necessary when:
1. Adjusting the fuse rating in relation to the type of PV panel utilized
2. The fuse is damaged
Replacing the fuse is carried out by means of the specic fuse carrier
which makes it simple to extract the fuse and correctly position the new
fuse when it is inserted.
String fuse replacement procedure:
1. Disconnect the strings by opening the AC+DC disconnect switch and
thereafter the quick t input connectors.
By opening the AC+DC disconnect switch alone, the DC input voltage is still present on the
fuse boards.
2. Remove the fuse to be replaced by grasping the fuse carrier handle
3. Raise the fuse holding clip and extract the fuse from the carrier at the
same time
4. Insert the new fuse into the carrier
5. Install the fuse carrier inside the wiring box
Check that the fuse carrier is ush with the fuse board once the fuse carrier is installed.
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