Patent · US Active

Switching device with dual contact assembly

US10290445B2 · kind B2 · utility

1Cited by

13References

8Claims

0Family size

Assignee

Eaton Intelligent Power Limited · IE

Inventors

Gerd Schmitz · Niederkassel, DE
Marcel Uedelhoven · Kall, DE
Johannes Meissner · Bonn, DE
Michael Wohlang · Bornheim, DE

Key dates

Filing date	Dec 9, 2014
Grant date	May 14, 2019
Priority date	—
Expiry date	Nov 4, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH03K2217/0081
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A switching device for conducting and interrupting electric currents, has a first mechanical contact assembly, a semiconductor switch, which is connected in parallel with the first mechanical contact assembly; a second mechanical contact assembly, which is connected in series with the first mechanical contact assembly; an auxiliary coil, which is galvanically isolated from the circuit of a switching drive for moving contacts of the first and second mechanical contact assemblies and is electromagnetically coupled to a coil of the switching drive in such a way that a voltage is produced in the auxiliary coil when the voltage supply of the switching drive is switched off; and switching electronics, which are designed to switch the semiconductor switch on and off and which are supplied by the voltage produced in the auxiliary coil when the voltage supply of the switching drive is switched off.

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