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32 GMC-I Gossen-Metrawatt GmbH
8.2 Beoordelen van de meetwaarden
Met Tabel 1 op blz. 62 kunt u bij de maximaal toelaatbare aardcir-
cuitweerstand Z
schl
vaststellen welke waarde het instrument
maximaal mag weergeven. Hierbij wordt namelijk rekening gehou-
den met de maximale gebruikersfouten van het instrument. Tus-
senliggende waarden kunt u interpoleren.
Op basis van de berekende kortsluitstroom Ik kunt u, met behulp
van de Tabel 6 op blz. 64, de maximaal toelaatbare nominale
waarde van de beveiliging (smeltpatroon of installatie-automaat)
vaststellen bij een nominale spanning van 230/240 V. Hierbij
wordt rekening gehouden met de maximale gebruikersfouten van
het instrument. (conform DIN VDE 0100 deel 610).
D.m.v. de knop I
ΔN
/ i
wordt na de meting een
indicatie van de maximaal
toelaatbare zekering per
type weergegeven.
De tabel toont de maximaal toelaatbare nominale stroom van de
voorbeveiliging per type karakteristiek op basis van de verkregen
kortsluitstroom. Dit is een indicatieve waarde.
8.3 Testen van kWh-meter met 2-polige adapter
Het aanlopen van kWh-meters die tussen L-L of L-N aangebracht
zijn, kan hier getest worden.
Aansluitschema
MENU
Z
Schl
32


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