SMA WINDY BOY 3300 - Page 56

Troubleshooting SMA Solar Technology AG
56 WB33_38-IEN101830 Installation Guide
Zac-Bfr
Zac-Srr
The grid impedance has left the permissible range. The suffixes "Bfr" und
"Srr" are not relevant.
For safety reasons, the inverter disconnects itself from the grid. The
impedance is calculated from both the grid impedance and the
impedance of the AC cable of the inverter.
• Check the grid impedance and grid connection on the inverter.
• Use an AC cable with an adequate cross-sectional area (= low
impedance) as described in section 5.3.1”Connecting the Inverter
to the Public Grid (AC)” (page24). If required, check and re-
tighten the screws on the AC terminals.
• Check the grid impedance and the AC connection on the inverter.
Use a cable with an adequate cross-sectional area (= low
impedance), observing the advice on this matter in section
5.3”Connection to the Public Grid (AC)” (page22).
• If this fault recurs, please contact the SMA Serviceline.
Message Description / Remedy