In case of an error, the current injection
is immediately stopped, and the grid relay is triggered which disconnects the Solar Inverter from the grid.
In addition, there are the following pro- tection devices on the grid side and on the PV generator side:
· Varistors on the grid side
They protect the power semiconductorsGB in case of
peaks in the grid, and they discharge the throttle in case of disconnection from the grid.
·Varistors on the PV generator side Varistors offer protection from atmos- pheric overvoltage (e. g. caused by remote lightning strikes).
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