Arrester for gas insulated switchgear device
US5373279A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1993 |
| Grant date | Dec 13, 1994 |
| Priority date | — |
| Expiry date | Oct 25, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01C7/123
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An arrester for a gas insulated switchgear device includes a closed container filled with an insulating gas; a columnar piled body formed by piling up a plurality of zinc oxide resistance elements between a high voltage side terminal and a grounding side terminal disposed in the closed container; a plurality of potential equalizing rings electrically and mechanically connected to the high voltage side terminal of the columnar piled body, the potential equalizing rings being disposed in a discrete manner along the piling up direction of the zinc oxide resistance elements with a predetermined spacing distance while surrounding the outer circumference of the columnar piled body; and an intermediate electrode disposed around the columnar piled body at a position facing the potential equalizing ring located nearest to the grounding side terminal among the potential equalizing rings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.