Patent · US Active

Electric switch

US9088156B2 · kind B2 · utility

0Cited by

3References

7Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Andre Borgwardt · Ketzin/Havel, DE
Thomas Driehorn · Berlin, DE
Peter Kopaczewski · Berlin, DE
Andreas Krauß · Erwitte, DE
Aron-Ernst Musiol · Teltow, DE
Gerd Muller · Falkensee, DE

Key dates

Filing date	Feb 20, 2013
Grant date	Jul 21, 2015
Priority date	—
Expiry date	Sep 22, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH02H3/044
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electric switch is disclosed, in particular an electric circuit breaker. In at least one example embodiment, the switch includes a measuring channel for measuring an electric measured variable and is switched off when the result of a measurement reaches or exceeds a limit value. To test the mode of operation of the measuring channel, the electric measured variable is switched to a reference channel and a reference signal source is switched to the measuring channel and the reference result obtained via the measuring channel is compared with a reference setpoint. The switch is also tripped if, to test the mode of operation of the measuring channel, the electric measured variable is switched to the reference channel and the result obtained via the reference channel reaches or exceeds the limit value.

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