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MI 3152(H) EurotestXC (2,5 kV) Tests en metingen
23
Figuur 4.12: Aansluiting van 2.5 kV meetkabels (UN = 2.5 kV)
Procedure van de meting
Selecteer Diagnostische test functie.
Voer de test parameters / limieten in.
Maak de installatie spanningsloos.
Verbind de testkabel met het instrument.
Verbind de testkabels met het testobject (zie Figuur 4.11 en Figuur 4.12).
Er moeten verschillende testkabels gebruikt worden voor het testen met nominale test
spanningen UN ≤ 1000 V en UN= 2500 V.
De standaard 3-aderige meetkabel, meetsteker of meetsteker/ meetpen met bediening
kunnen gebruikt worden voor de isolatieweerstand test met nominale test spanningen
van 1000 V. Voor de 2500 V isolatie test moeten de 2-aderige 2.5 kV meetkabels
gebruikt worden.
Start de meting. Interne timer start. Na 1 minuut worden de R60 en DAR factor
weergegeven, er is een korte toon. Metingen kunnen op elk moment onderbroken
worden.
Na 10 minuten wordt ook de PI factor weergegeven en is de meting compleet. Wacht
totdat het object volledig ontladen is.
Bewaar de resultaten (optioneel).
Figuur 4.13: Voorbeelden van Diagnostische test resultaten
Resultaten van de metingen
Riso
Isolatieweerstand
Um
Testspanning
R60
Weerstand na 60 seconden
DAR
Dielektrisch Absorptie Ratio
PI
Polarisatie index
23


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