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Instaltest XE Metingen
79 Rev 001
6.8 Aardverspreidingsweerstand
De Instaltest XE kan de Aardverspreidingsweerstandmeting meten met de
driedraads meetmethode. Deze meting wordt gebruikt om de weerstand van
aardelektrodes en bliksembeveiligingselektrodes te meten.
Tip:
De meetelektrode (S) wordt geplaatst tussen de
aardelektrode (E) en de hulpaardelektrode (H) in het aard
referentievlak (zie Figuur 59).
Tip:
De afstand van de aardelektrode (E) tot de hulpaardelektrode
(H) is minstens 5 maal de diepte van de aardelektrodestaaf of
de lengte van de bandelektrode.
Tip:
Bij het meten van de totale Aardverspreidingsweerstand van
een aardingssysteem met meerdere aardelektrodes is de
vereiste afstand van de hulp- en meet-elektrode afhankelijk
van de langste diagonale afstand tussen de individuele
aardelektrodes.
6.8.1 De meting van de Aardverspreidingsweerstand uitvoeren
Stap 1 Selecteer de functie AARDE met de draaischakelaar. Het volgende menu
wordt getoond:
Figuur 58 Menu meting Aardverspreidingsweerstand
Verbind het meetsnoer met de Instaltest XE.
Stap 2 Maak de volgende instelling:
Waarde boven limiet aardverspreidingsweerstand.
Stap 3 Volg het aansluitschema dat in Figuur 59 is getoond om de
Aardverspreidingsweerstand te meten. Gebruik indien nodig de functie Help.
De testaansluitingen worden als volgt gebruikt:
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