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47 kOhm

Roar
Roar

Hei. jeg har et støpsel liggende som er laget for å simulere en lekkasjestrøm/jordfeil for bruk i test av medisinsk IT. Støpselet settes i en av stikkontaktene tilhørende anlegget. Den er på 47 kOhm. noen som har en forklaring på hvorfor den akkurat er dette? 47kOhm gir enn strøm på 0,004 A ved 230V.  Er det en grunn for akkurat 47 kOhm eller var det den de hadde tilgjengelig når denne ble laget?

Re: 47 kOhm

Re: 47 kOhm

Dette indikerer at isolasjonsovervåking er innstilt slik at 4 mA skal gi alarm, iht. avsnitt 710.304.102 i NEK 400:2018.

Re: 47 kOhm

Joar
Joar

naturligvis.  takk for svar

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