SMA WB 3000-21 Installation - Manual (Page 52)

8 Configuration SMA Solar Technology AG
52 WB3-5TL-21-IA-en-10 Installation Manual
8.5 Changing the DC Critical Voltage for Feed-in to the
Power Distribution Grid
It is possible to change the default setting for the critical voltage to end and/or start feed-in.
Requirement:
☐ A communication product that is appropriate for the type of communication used must be
available.
Changing the critical voltage to end feed-ing
If the default values for ending feed-in are not in the range of the set polynomial curve, you must adjust
the critical voltages to the zero-crossing of the power-voltage characteristic curve with the x axis. By
doing so, you achieve optimum start-up behavior for the plant.
Figure 14: Power-voltage characteristic curve of a small wind turbine system indicating the default value for
critical voltage to end feed-in and the zero-crossing of the curve with the x axis (example)
1. Select the parameter Critical voltage to end feed-in or Upv-Stop and set the desired value.
2. Save setting.