SMA SC 500CP-US-10 600V - Manual (Page 75)

SMA America, LLC 9 Grid Monitoring
Operating Manual SCCP-US-BE-US_en-52 75
Deviation:
Voltage measurement: +/– 8.5 V
Frequency measurement: +/– 0.06 Hz
Disconnect time: +/–4.5%
9.5 Grid Connection after Correction of Error
If a grid error has been rectified, the inverter will only switch on once the applicable utility grid meets a set of conditions.
For example, the line voltage and the power frequency must remain within the set limiting values for grid connection for
the duration of the grid monitoring period.
9.6 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 for the specific device.
The default value of the parameter VRtg is specified in the parameter list (see Section 13.1.2 "Grid Monitoring/Grid
Limits", page 101).
Procedure:
1. Set the parameter TrfVolExlHi (see Section 6.2 "Changing Parameters", page 51).
2. Set the parameter VRtg.
3. Confirm the parameter entry with [Save].