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PAV,E
In Germany, PAV, E refers to a set of rules to ensure that feed-in power does not exceed the agreed limit with the grid operator. This requires a certified external protective device that switches off within x seconds if the limit is exceeded. The switch-off time varies depending on the extent of the excess power.
You can find the relevant VDE guideline here:
https://www.vde.com/de/fnn/themen/tar/tar-mittelspannung-vde-ar-n-4110/pave-hinweisExample protection device: ZIEHL EFR4001IP (Compatible with blue'Log firmware > 30.x)