Patent · US Active

Method and device for securely operating a switching device

US7812696B2 · kind B2 · utility

3Cited by

13References

22Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

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

Key dates

Filing date	Dec 22, 2005
Grant date	Oct 12, 2010
Priority date	—
Expiry date	Jun 22, 2027

Classification

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

Abstract

A method and a device for secure operation of a switching device including at least two main contacts which can be switched on and off and include contact pieces and a displaceable contact bridge, and a control magnet having a displaceable anchor. The method may include producing an electric control signal to release a contact breaking device when the control magnets are switched on and off. The emitted control signal lies outside the ON state of the switching contact during the regular operation of the switching device and releasing the contact breaking device in defective operation of the switching device if the switching contact remains in the ON state when the control magnets are switched on or off. The switching contact may connect through the control signal to release the contact breaking device.

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