Manual Kyoritsu 4102A (page 10 of 20) (Dutch)

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7. WERKING

7-1 Meetprincipe

Dit instrument meet de aardingsweerstand volgens de spanningsvalmethode;

dit is een methode voor het bekomen van de aardingsweerstand Rx door

een constante wisselstroom I aan te leggen tussen het te meten object E

(aardelektrode) en C (stroomelektrode), en om het potentiaalverschil V te

zoeken tussen E en P (spanningselektrode)

Rx = V/I

7-2 Nauwkeurige meting (met testprobe M-7095)

① Verbinding van de meetsnoeren

Steek de aardingspinnen P en C diep en op een rechte lijn in de aarde

op een afstand van 5 tot 10 m van de geaarde testapparatuur. Verbind

het groene meetsnoer met de geaarde testapparatuur, het gele snoer

met hulpaardingspin P en het rode meetsnoer met aardingspin C,

respectievelijk vanaf de aansluitklemmen E, P en C.

GEVAAR

● Het toestel levert een maximumspanning van ±50V tussen de klemmen

E-C of E-P in de functie aardingsweerstand. Let op voor een elektrische

schok.

● Bij het meten van aardspanning, geen spanning aanleggen van meer dan

30V tussen de aansluitklemmen.

● Bij het meten van aardingsweerstand, geen spanning aanleggen tussen de

aansluitklemmen.

Constante-stroomgenerator

Voltmeter

P(Potencial) C(Current)

Rx=v/

E(Tierra)

〜

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Kyoritsu 4102A Manual

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