Design of an electronic earth leakage circuit breaker

Τίτλος

Design of an electronic earth leakage circuit breaker

Θέμα

Electric circuit-breakers

Electric circuits--Design and construction

Δημιουργός

Hadjiantonis, Antonis

Πηγή

Higher Technical Institute

Το πλήρες κείμενο είναι διαθέσιμο από το Υπουργείο Ενέργειας, Εμπορίου Βιομηχανίας και Τουρισμού

Εκδότης

Library of Cyprus University of Technology

Ημερομηνία

1994

Συνεισφέρων

Marouchos, Christos

Δικαιώματα

Απαγορεύεται η δημοσίευση ή αναπαραγωγή, ηλεκτρονική ή άλλη χωρίς τη γραπτή συγκατάθεση του δημιουργού και κάτοχου των πνευματικών δικαιωμάτων.

Μορφή

pdf

Γλώσσα

eng

Τύπος

text

Αναγνωριστικό

EED0301

Σύνοψη

This design has the following objectives:
1) To design an electronic circuit for sensing an earth leakage in an electrical apparatus. It is obvious that a device or circuit has to detect the earth leakage current in order to be able to provide protection against it.
2) To provide means for setting the upper safe limit to this fault. This is due to the noise that may occur. We don't want the mains circuit to be broken because of noise, but only because of a real fault.
3) To provide means for breaking the supply to the load when the predetermined upper safe limit is exceeded.
4) To provide means for the supply to be prevented from being reconnected to the load after a fault, unless the user is alerted.
- Existing H.T.I. laboratory equipment such as a dual power supply and a current transformer were used.