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SMA Solar Technology AG
BedieningshandleidingSTP3-6-3AV-40-BE-nl-1288
Meet de spanningen tussen de plus- en minpool.
Als de volgende resultaten tegelijkertijd worden gemeten, is er sprake van een aardlek in
de PV-installatie:
Alle gemeten spanningen zijn stabiel.
De som van de twee spanningen ten opzichte van de aardpotentiaal (PE) is
ongeveer gelijk aan de spanning tussen de plus- en minpool.
3. Als er een aardlek wordt gevonden, bepaal dan aan de hand van de verhouding tussen de
twee gemeten spanningen de positie van het aardlek en verhelp het aardlek.
4. Als er geen duidelijk aardlek meetbaar is en de melding nog steeds wordt weergegeven, voer
dan een isolatieweerstandsmeting uit.
5. Sluit strings zonder aardlek weer op de omvormer aan en stel de omvormer weer in bedrijf
(zie installatiehandleiding van de omvormer).
Locatie van het aardlek
Het voorbeeld toont een aardlek tussen het tweede en derde PV-paneel.
+
100 V 100 V 100 V 100 V 100 V
V = 200 V
1
V = 300 V
2
88


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