§ — Locked · Electrician
Unlock RCD / HPFI in TT system
Rated tripping current from earth resistance
Find den største tilladte mærkeudløsestrøm I_ΔN så berøringsspændingen holdes under 50 V i et TT-system (R_A·I_ΔN ≤ 50 V), og tjek 0,3×-lækstrømsgrænsen. Personbeskyttelse kræver desuden maks. 30 mA.
See all calculators in the trade — free and without an account.
Members only
RCD / HPFI in TT system is locked
Create a free user account to unlock all articles, calculators, templates and range — and get access to quizzes and classes. It takes less than a minute: name, email and a password. No payment card.
You will come back here afterwards
Want to try something first? See what you can use without an account — the junior zone, the encyclopedia, the videos and more.