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GMC-I Gossen-Metrawatt GmbH 25
Referentievoorwaarden
Omgevingstemp. 23 °C ± 2 K
Rel. vochtigheid 50% ± 5%
Netspanning 230 V ± 1%
Frequentie 50 Hz ± 0,2%
Spanningsvorm sinus
(afwijking tussen effectieve en gelijkgerichte waarde ± 0,5%)
Omgevingsinvloeden
Aanwijzing en signalering METRATESTER
®
4
LCD
Aanwijzing 0...1999 digits, 3 ½ posities
Cijfergrootte 18 mm
Overload indicatie weergave van linker cijfer “1”
Signaallamp PE
signaleert of er spanning op de beschermingsleiding staat
Aanwijzing en signalering METRATESTER
®
5/5-F
LCD
Aanwijzing 0...1999 digits, 3 ½ posities
Cijfergrootte 17 mm en speciale tekens
Overload indicatie weergave van “OL”
Thermische beveiliging bij langdurige kortsluiting:
de aanwijzing “R
ISO
” en “MW” lichten op
Signaallamp PE
signaleert of er spanning op de beschermingsleiding staat
Foutindicatie LED
De rode foutindicatie LED signaleert grenswaarde-overschrijdingen bij het meten van de
weerstand van de beschermingsleiding, de isolatieweerstand, de vervangende lekstroom, de
aanraakstroom, resp. de lekstroom, evenals de verschilstroom.
Piezozoemer
In het geval dat de foutindicatie LED oplicht en de desbetreffende kritische grenswaarde
overschreden wordt, gaat bovendien de zoemer af.
Grootheid Meetgrootheid Einflußeffekte
± ... % v.d. meetwaarde
Temperatuur aangegeven effecten gelden per 10 K temperatuurverandering
0... 21
°C en 25 ... 40 °C weerstand beschermingsleiding 1
alle andere meetbereiken 0,5
Frequentie
49 ... 51 Hz vervangende lekstroom cap. belasting 2
45 ... 100 Hz aanraakstroom 1
25


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