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MI 3109 EurotestPV Lite Messungen
29
5 Messungen
5.1 Isolationswiderstand
Die Isolationswiderstandsmessung wird durchgeführt, um die Sicherheit vor elektrischen
Schlägen durch die Isolierung zwischen stromführenden Teilen an den PV-Anlagen und
der Erdung zu garantieren.
Diese Messung wird entsprechend der Prüfmethode gemäß IEC / EN 62446 (Prüfung
zwischen Modul / String / negative Elektrode und Erdung mit anschließender Prüfung
zwischen Modul / String / positiver Elektrode und Erdung) durchgeführt.
Im Kapitel 4.2 Funktionswahl finden Sie Hinweise zur
Tastenfunktion. Die Eingangsspannung wird
angezeigt.
Abbildung 5.1:
Isolationswiderstand
Prüfparameter für die Isolationswiderstandsmessung
TEST
RISO - , RISO +
Uiso
Prüfspannung [50 V, 100 V, 250 V, 500 V, 1000 V]
Grenzwert
Mindestwert für den Isolationswiderstand [OFF, 0,01 M ÷ 200 M]
Anschluss zur Durchführung der Isolationswiderstandsmessung
Abbildung 5.2: Anschluss zur Durchführung der Isolationsmessung mit Universal-PV-
Prüfleitung
DC-
Schalter
29


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