Patent · US Expired

Method and device for the safe operation of a switching device

US7692522B2 · kind B2 · utility

10Cited by

6References

44Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Peter Hartinger · Pfarrkirchen, DE
Norbert Mitlmeier · Ursensollen, DE
Ludwig Niebler · Hemau, DE
Fritz Pohl · Hemhofen, DE
Norbert Zimmermann · Sulzbach-Rosenberg, DE

Key dates

Filing date	Dec 22, 2005
Grant date	Apr 6, 2010
Priority date	—
Expiry date	May 3, 2026

Classification

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

Abstract

A method and device are disclosed for safely operating a switching device with at least one main contact, which can be switched on or off, and which has contact elements and a moving contact bridge, and with at least one control magnet, which has a moving armature. During switching on and off, the armature acts upon the contact bridge whereby closing and opening the corresponding main contact. At least one embodiment of the method includes the following: a) identifying whether the moving contact bridge of the at least one main contact has surpassed an opening point after the switching off; and b) interrupting the further operation of the switching device when the opening point has not been surpassed after a predetermined period of time.

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