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28 GMC-I Messtechnik GmbH
10.1 Meten met sonde
De aardweerstand meten met sonde (met netbedrijf) – aansluitschema
Legenda
RBGebruiksaarddraad
REAardweerstand
RXAardweerstand door systemen van de potentiaalvereffe-
ning
RSSondeweerstand
PAS Potentiaalvereffeningsrail
RE Totale aardweerstand (RE1//RE2//waterleiding)
Meting RE
Meetfunctie kiezen
Aansluiting
Aangesloten worden: 2-polige adapter en sonde
Parameter instellen
Meetbereik: AUTO,
10 k (4 mA), 1 k (40 mA), 100 (0,4 A), 10 (> 0,8 A)
Bij installaties met RCD-aardlekschakelaar moet de weerstand
resp. de meetstroom zodaning gekozen worden, dat deze
onder de aanspreekstroom (½ IN) ligt.
Soort aansluiting: 2-polige adapter + sonde
Contactspanning: UL < 25 V, < 50 V, < 65 V, willekeurig instelbare
spanning zie Hoofdst. 5.7
Overzetverhouding: hier niet van belang
De meting starten
Opmerking
Als de 2-polige adapter verkeerd
wordt aangesloten, verschijnt het
volgende diagram in beeld.
PROFITEST / SECULIFE IT
Waterleiding
SE2
E1
B
RE1
USonde
I
---------------=


RE
Limiet / grenswaarde:
RE > Limiet / grenswaarde
UL RL
28


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