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MI 3109 EurotestPV Lite Messungen
32
5.2 Widerstand des Erdungsanschlusses und
Potentialausgleichs
Die Widerstandsmessung wird durchgeführt, um die Schutzmaßnahmen gegen
elektrischen Schlag an Erdungsverbindungen und Potentialausgleich zu prüfen. Zwei
Unterfunktionen sind verfügbar:
R LOW - Schutzleitermessung gemäß EN 61557-4 (200 mA),
CONTINUITY - Durchgangsmessung des Widerstands bei 7 mA.
Im Kapitel 4.2 Funktionswahl finden Sie Hinweise zur
Tastenfunktion.
Abbildung 5.5: 200 mA RLOW
Prüfparameter für die Widerstandsmessung
TEST
Unterfunktion Widerstandmessung [R LOW, CONTINUITY]
Grenzwert
Maximaler Widerstand [OFF, 0,1 ÷ 20,0 ]
Zusätzliche Prüfparameter für Unterfunktion Durchgangsprüfung
Summer Ein (ertönt wenn Widerstand geringer ist als der eingestellter
Grenzwert) oder Aus
5.2.1 R LOW, 200 mA Widerstandsmessung
Die Widerstandsmessung wird mit automatischer Polaritätsumkehrung der
Prüfspannung durchgeführt.
Anschluss für die Messung R LOWΩ
Abbildung 5.6: Anschluss für die RLOW Ω-Prüfung
DC-
Schalter
32


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