4 grid connection after correction of error, 5 setting the medium voltage, Grid connection after correction of error – SMA SC 500HE-20 User Manual
Page 60: Setting the medium voltage
7 Grid Monitoring
SMA Solar Technology AG
60
SCxxxHE-20-BE-BEN111210
Operating Manual
7.4 Grid Connection after Correction of Error
If a grid fault in the inverter has been corrected, the inverter will only switch on when the grid voltage
meets a set of conditions. For example, the grid voltage must stay within the set limiting values for grid
connection (e.g. parameter "VCtlOpMinNom") for the duration of the grid monitoring time "GdErrTm".
7.5 Setting the Medium Voltage
The medium voltage of the inverter must match the medium voltage of the medium voltage grid.
It is important that the transmission ratio of the external medium-voltage transformer is adjusted at the
same time. The undervoltage side is already preset according to the specific device.
The default value of the parameter "VRtg" is specified in the parameter list (see section
12.1.2 "Grid Monitoring/Grid Limits", page 95).
1. Set the "TrfVolExlHi" parameter (see 5.2 "Changing Parameters", page 34).
2. Set the "VRtg" parameter.
3. Confirm parameter by pressing [Save].