Patent · US Active

Pressure trip unit for an electrical switch and electrical switch with such a pressure trip unit

US10971316B2 · kind B2 · utility

0Cited by

9References

20Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Oliver Andersen · Berlin, DE
Pawel Biedunkiewicz · Berlin, DE
Joerg-Uwe Dahl · Altentreptow, DE
Erhard Deylitz · Berlin, DE

Key dates

Filing date	Jul 31, 2018
Grant date	Apr 6, 2021
Priority date	—
Expiry date	Jul 31, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH01H2077/025
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A pressure trip unit for an electrical switch, including an actuating element and at least one flow channel per electrical pole, is disclosed. In an embodiment, the at least one pole of the electrical switch includes at least two switching contacts for making or disconnecting a flow path. The switching contacts of the at least one pole of the electrical switch are disconnectable via the actuating element which can respond to a pressure generated in a disconnection zone of the, in each case, two switching contacts by an electric arc drawn in the event of an electrodynamic recoil of the switching contacts. Further, the disconnection zone is connectable to the actuating element via the flow channel, the at least one flow channel including a nonreturn valve to permit a flow only from the disconnection zone in the direction of the actuating element.

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