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MI 3121 Smartec Isolation / Durchgang Isolationswiderstand
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5 Messungen
5.1 Isolationswiderstand
Die Messung des Isolationswiderstands wird durchgeführt, um die Sicherheit vor
elektrischen Schlägen durch die Isolation hindurch zu gewährleisten. Sie wird durch die
Norm EN 61557-2 abgedeckt. Typische Anwendungen sind:
Isolationswiderstand zwischen Leitern der Anlage,
Isolationswiderstand nicht leitender Räume (Wände und Fußböden),
Isolationswiderstand von Erdungskabeln,
Isolationswiderstand von schwach leitenden (antistatischen) Fußböden.
Weitere Informationen zur Funktionalität der Tasten
finden Sie in Kapitel 4.1, Funktionsauswahl.
Bild 5.1: Isolationswiderstand
Prüfparameter für die Isolationswiderstandsmessung
Uiso Prüfspannung [50 V, 100 V, 250 V, 500 V, 1000 V]
Grenzwert Minimaler Isolationswiderstand [AUS; 0,01 MΩ ÷ 200 MΩ]
Prüfschaltungen für den Isolationswiderstand
Bild 5.2: Anschluss des Universal-Prüfkabels
Legenden:
Mains voltage switched off Netzspannung abgeschaltet
closed switches geschlossene Schalter
loads disconnected Lasten abgetrennt
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