Modular overvoltage protection units
US9906017B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2015 |
| Grant date | Feb 27, 2018 |
| Priority date | — |
| Expiry date | Mar 14, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01C1/014
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A modular overvoltage protection unit for electrically connecting a first power line and/or a second power line to a protected earth (PE) line in the case of an overvoltage event on the first or second power line includes a unit enclosure defining an enclosure cavity, and first and second surge protection devices (SPDs) each disposed in the enclosure cavity. Each of the first and second SPDs includes: a first electrode in the form of a metal housing defining a housing cavity; a second electrode disposed within the housing cavity; and a varistor member captured between and electrically connected with each of the first and second electrodes, wherein the varistor member is formed of a varistor material. The overvoltage protection unit further includes: a first line terminal to connect the first power line to the overvoltage protection unit, wherein the first line terminal is electrically connected to the second electrode of the first SPD; a second line terminal to connect the second power line to the overvoltage protection unit, wherein the second line terminal is electrically connected to the second electrode of the second SPD; and a PE terminal to connect the PE line to the overvolt…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.