Measurement device for use in high-voltage gas-insulated switch gear
US4617513A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 24, 1984 |
| Grant date | Oct 14, 1986 |
| Priority date | — |
| Expiry date | Jul 24, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02B13/065
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Partial discharges are to be detected within a metal-encapsulated, compressed-gas-insulated high-voltage switchgear using a capacitive voltage divider. The measurement device used for this purpose contains an electrode which is dish-shaped and is inserted flush in an opening of the capsule. A measurement cable leading to the display or measurement unit is built up coaxially and connected with a terminal element which is a supporting component and contains the electrode and the edge of the opening in the capsule. In addition, the terminal includes an outer connecting element in the shape of a hollow cone which extends to the edge of the opening and an inner connecting element in the shape of a cone that extends to the electrode, which are coaxially arranged, the ratio of whose diameters d.sub.a /d.sub.i is constant, and which have the characteristic impedance of the measuring cable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.