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MI 3152(H) EurotestXC (2,5 kV) Prüfungen und Messungen
163
Anschlussplan
Abbildung 7.94: AUTO IT Messung
Messverfahren
Wählen Sie die Funktion AUTO IT.
Stellen Sie die Prüfparameter / Grenzwerte ein.
Messen Sie die Impedanz Zref am Ausgangspunkt (optional), siehe Kapitel 7.14
Spannungsabfall.
Schließen Sie die Prüfleitungen am Messgerät an.
Schließen Sie die Prüfleitungen am Prüfling an, siehe Abbildung 7.94.
Starten Sie den Auto Test.
Ergebnis speichern (optional)
Abbildung 7.95: Beispiele für Ergebnisse der AUTO IT Messung
Prüfergebnisse / Teilergebnisse
U L-N
Spannung zwischen den Phasen L1 und L2
ΔU
Spannungsabfall
Ik 1
Fehlerstrom des ersten Fehlers bei Einzelfehler zwischen L1/PE
Ik 2
Fehlerstrom des ersten Fehlers bei Einzelfehler zwischen L2/PE
R1
Schwellenwert Isolationswiderstand zwischen L1-PE
R2
Schwellenwert Isolationswiderstand zwischen L2-PE
I1
Berechneter Fehlerstrom des ersten Fehlers für R1
I2
Berechneter Fehlerstrom des ersten Fehlers für R2
Z (LN)
Leitungsimpedanz
Zref
Referenzleitungsimpedanz
Ik (LN)
Kurzschlussstrom
164


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