Protection concept | The following parameters are monitored | |
| continuously and in parallel by the micro- | |
| controller and displayed on the screen: | |
| · AFI error (ground fault) | |
| · Overheating of the cooling element | |
| · | DC overvoltage |
| · | AC undervoltage/overvoltage |
In the event of a fault, the conversion is immediately blocked and the grid relay disconnected.
In addition, the following protective devi- ces are provided on both grid and PV generator side:
·
Protect the power semiconductors from
·
Thermally monitored varistors provide pro- tection against atmospheric overvoltages (e.g. due to remote strikes during storms).
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