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Gossen Metrawatt PROFITEST MXTRA Manual

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28 GMC-I Messtechnik GmbH
8.2 Evaluatie van de
meetwaarden
Aan de hand van Tabel 1
op pagina 84 kunt u de
maximaal toegelaten
lusimpedanties Z
L-PE
bepalen die met inacht-
neming van de maxi-
male meetafwijking van
het apparaat (in normale
meetomstandigheden)
aangegeven mogen
worden. Tussenwaar-
den kunt u interpoleren.
Aan de hand van Tabel 6
op pagina 85 kunt u op
basis van de gemeten kortsluitstroom de maximaal toegelaten
nominale stroom van de beveiliging (zekering resp. aardlekscha-
kelaar) voor de nominale spanning 230 V bepalen met inachtne-
ming van de maximale gebruiksfout van het apparaat (conform
DIN VDE 0100 deel 600).
Uitzondering weergave van de grenswaarde
De grenswaarde kan niet worden bepaald. De controleur moet de
meetwaarden zelf evalueren en bevestigen of verwerpen met de
softkeyknoppen.
Meting OK: Knop
4
Meting niet OK: Knop X
Pas na uw evaluatie kan de weetwaarde worden opgeslagen.
9 Meten de netzimpedantie (functie Z
L-N
)
Meetprocedure (interne netweerstand)
De netimpedantie Z
L-N
wordt volgens dezelfde meetprocedure
gemeten als de lusimpedantie Z
L-PE
(zie hoofdstuk 8 op pagina
26). De stroomlus wordt hierbij via de nulleider N gevormd en niet
via de aardleiding PE zoals bij de lusimpedantiemeting.
Meetfunctie kiezen
Aansluiting
contactstop met rande-
aarde/3-polige adapter
Aansluiting
2-polige adapter
Parameter instellen
Door op de hiernaast afgebeelde softkeyknop te
drukken schakelt u om tussen het landspecifieke
stekkerinzetstuk bv. contactstop/3-polige adapter en
2-polige adapter. De gekozen soort aansluiting
wordt geïnverteerd weergegeven (wit op zwart).
Z
L-N
Nominale stromen:
Aanspreekkarakteristieken: A ... H
Doorsnede: 1,5 ... 70 mm²
Kabeltypes: NY..., H07...
Aantal aders: 2 ... 10 aders
2 ... 160 A, 9999 A
… 28 …


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