Surge protection device, comprising at least one surge arrester and one thermally trippable switching device connected in series with the surge arrester
US10049795B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2014 |
| Grant date | Aug 14, 2018 |
| Priority date | — |
| Expiry date | May 16, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2085/381
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a surge protection device, comprising at least one surge arrester and one thermally trippable switching device connected in series with the surge arrester, wherein the above-mentioned means form a structural unit and the thermal tripping means is arranged in the region in which heating of the surge arrester is to be expected on overloading thereof. The thermal tripping means is in the form of a stop part through which there is no operating or surge current flowing and which effects or enables unlatching of the switching device in the case of thermal overload. Furthermore, the stop part is coupled thermally and mechanically to a surface side of the surge arrester and blocks the movement path of a mechanically prestressed unlatching slide. In accordance with the invention, a contact platelet is inserted in the unlatching slide, said contact platelet producing an electrical connection between elements of the switching device and, with unlatching, the contact platelet is subjected to a shifting movement resulting in an interruption to the series circuit and movement of the unlatching slide into the space previously assumed by the contact platelet, wherein at le…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.