Patent · US Active

Method for determining the state of an electrical switchgear assembly, monitoring unit for an electrical switchgear assembly, and electrical switchgear assembly

US12288967B2 · kind B2 · utility

0Cited by

8References

13Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Ivana Mladenovic · Seukendorf, DE
Anne Bauer · Fürth, DE

Key dates

Filing date	Jun 28, 2021
Grant date	Apr 29, 2025
Priority date	—
Expiry date	Dec 22, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH01H2071/044
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Various embodiments of the teachings herein include methods for determining the state of an electrical switchgear assembly. The method may include: measuring an electric current and a voltage dropped across the switchgear assembly; ascertaining a time interval of an arc occurring during a switching operation; comparing the ascertained time interval to a reference value specific to the switchgear assembly; measuring a voltage profile during the time interval; and comparing the voltage profile with a reference voltage profile. The time interval begins when the value of the measured voltage exceeds a first threshold value. The time interval ends when the value of the current intensity falls below a second threshold value.

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