Patent · US Active

Circuit breaker device and method

US12327992B2 · kind B2 · utility

0Cited by

3References

22Claims

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	Jun 10, 2025
Priority date	—
Expiry date	Feb 5, 2042

Classification

Technology area (CPC H)Electricity
CPC primaryH02H3/006
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for protecting an electrical low-voltage circuit includes ascertaining the level of the voltage of the low-voltage circuit in the form of instantaneous voltage values. A change in the current is ascertained over time such that instantaneous current change values are provided. The instantaneous current change values are compared to instantaneous current change threshold values in order to recognize a short circuit in the low-voltage circuit, and if the current change thresholds are exceeded, an electronic interruption unit switches from the low-resistance state to the high-resistance state in order to interrupt the low-voltage current circuit. The process has a trigger time from the short circuit event to the high-resistance state. The trigger time is largely independent of the phase angle. A circuit breaker device for protecting an electrical low-voltage circuit is also provided.

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