Patent · US Expired

Control system for an electromagnetic switching device and electromagnetic switching device corresponding thereto

US6813132B1 · kind B1 · utility

5Cited by

3References

37Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Norbert Mitlmeier · Ursensollen, DE
Bernhard Streich · Amberg, DE

Key dates

Filing date	Mar 15, 2002
Grant date	Nov 2, 2004
Priority date	—
Expiry date	Mar 22, 2023

Classification

Technology area (CPC G)Physics
CPC primaryG01R31/3278
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electromagnetic switching device is monitored at least for the correct connection of an input contact and of an output contact by a contact bridge. For this purpose, a monitoring circuit is coupled to the contacts before the contact bridge is moved into a connection position when a connection command is given, and an indicator of the correct connection of the contacts is determined by evaluation of a contact voltage dropped across the contacts and supplied to the monitoring circuit.

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