SMA Solar Technology AG
Troubleshooting
Installation Manual
WB33-38-IA-IEN120940
61
Zac-Bfr
Zac-Srr
The grid impedance is outside the permissible range. The suffixes
"Bfr" und "Srr" are not relevant.
The inverter disconnects from the electricity grid for safety reasons. The
impedance is made up of both the grid impedance and the impedance
of the inverter AC cables.
• Check the grid impedance and grid connection at the inverter.
• Use an AC cable with an adequate cross-section
(= low impedance) as described in Section 5.3.2 "Connecting the
Inverter to the Electricity Grid (AC)" (page 25). If required, check
and re-tighten the screws on the AC plugs.
• Check the grid impedance and the AC connection on the inverter.
Use a cable with an adequate cross-section (= low impedance).
Observe the relevant advice in Section 5.3 "Connection to the
Electricity Grid (AC)" (page 23).
• If this fault recurs, please contact the SMA Service Line.
Message
Description / Remedial Action
