Synchronisiertes Öffnen eines Leistungsschalters

Details

Veröffentlichungs-Nr.

EP3723110

Aktenzeichen

EP19169064

Anmeldetag

12. April 2019

Veröffentlichung

29. Oktober 2025

Erteilung

29. Oktober 2025

Rechtsraum

EP

IPC

H01H9/56

Abstract

A method for synchronizing opening of a circuit breaker is presented. The circuit breaker is arranged to interrupt a current to an inductive load. The method is performed in a control device (2) and comprises measuring (S100) a reference signal as a function of time for a circuit breaker (1) connected to an inductive load (5), obtaining (S110) an indication of a power factor of the inductive load through the circuit breaker, determining (S120) an arcing time for opening of the circuit breaker, the arcing time being dependent on the obtained indication of a power factor, predicting (S130) a zero crossing of a current through the circuit breaker based on the measured reference signal, and providing (S140) contact separation of a contact pair of the circuit breaker at a point of time before the predicted zero crossing, the point of time being determined by the determined arcing time and the predicted zero crossing. A control device, a circuit breaker arrangement, and a computer program for synchronizing opening of a circuit breaker are also presented.

Anmelder

Firma

ABB Schweiz AG

Land

🇨🇭 Schweiz

Fachgebiete