Patent · US Active

Switching device for fast disconnection of short-circuit currents

US11875959B2 · kind B2 · utility

0Cited by

10References

15Claims

0Family size

Assignee

Eaton Intelligent Power Limited · IE

Inventors

Johannes Meissner · Bonn, DE
Julia Otte · Cologne, DE
Kai Schroeder · Niederkassel, DE
Madeline Dumont · Eitorf, DE

Key dates

Filing date	Mar 12, 2020
Grant date	Jan 16, 2024
Priority date	—
Expiry date	May 3, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH01H2039/008
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A switching device for fast disconnection of short-circuit currents includes a switching bridge with a movable contacting element and a fixed contacting element. The switching bridge is operable in a closed state, in which the movable contacting element is in contact with the fixed contacting element, and an open state, in which the movable contacting element is spaced apart from the fixed contacting element. The switching device further includes an electromagnetic switching drive with a coil for generating a magnetic field and a magnet anchor, a guide sleeve to guide the movement of the magnet anchor in the magnetic field of the coil, a pyrotechnic propellant charge located in the cavity, and a supporting device for supporting the guide sleeve. The magnet anchor is arranged within the guide sleeve such that a cavity is formed below the magnet anchor.

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