Patent · US Active

Circuit breaker device and method

US12244132B2 · kind B2 · utility

0Cited by

5References

20Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Fabian Döbler · Theilenhofen, DE
Christopher Fromme · Fürth, DE
Dominic Malane · Eichstätt, DE
Marvin Tannhäuser · Eschborn, DE

Key dates

Filing date	Dec 16, 2021
Grant date	Mar 4, 2025
Priority date	—
Expiry date	Feb 25, 2042

Classification

Technology area (CPC H)Electricity
CPC primaryH02H3/044
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A circuit breaker device protects an electric low-voltage current circuit. A level of a voltage of a low-voltage current circuit is ascertained such that ascertained voltage values are provided. A differential voltage is ascertained from the ascertained voltage values and an expected value of the voltage such that differential voltage values are provided incrementally. Each differential voltage value is compared with a first threshold, and if at least two successive differential voltage values exceed the threshold, an interruption of the low-voltage current circuit is initiated by semiconductor-based switching elements, which are set to a high-ohmic state, in order to protect the low-voltage current circuit from a short-circuit.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.