Method and device for permanent disconnection of an electrical circuit with an inductive load by switching two switches
US11444446B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Feb 4, 2020 |
| Grant date | Sep 13, 2022 |
| Priority date | — |
| Expiry date | Jan 1, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H1/0007
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device for permanently secure disconnection of an electric circuit with high currents at high voltages with an inductive load is provided. The device has a first and a second switch/switch group, connected to each other in series and can be transferred from a closed state into a separated state for disconnecting the electric circuit, wherein none of the switches/switch groups is formed such that it is capable of permanently disconnecting the electric circuit by itself, and a control unit, which actuates the second switch/switch group and which is formed such that the second switch/switch group is transferred from the closed state into the separated state after the first switch/switch group. Further provided is an electric circuit which includes the device and a voltage source, a load resistance and an inductive load. A method using the device is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.