0.2Ss class special-type high-voltage measuring current transformer
US9431170B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 2, 2013 |
| Grant date | Aug 30, 2016 |
| Priority date | — |
| Expiry date | Aug 2, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R15/185
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A 0.2Ss class special-type high-voltage measuring current transformer belongs to a field of current transformer. An iron core includes two kinds of “L”-shaped sheets with the same size, wherein a ratio of a long side to a short side of each “L”-shaped sheet is 3:2; a first kind of the “L”-shaped sheets are permalloy sheets (1) and a second kind of the “L”-shaped sheets are cold rolled silicon steel sheets (2); and required windings are wound on each side of the iron core. Sheets of the iron core of the current transformer include the permalloy sheets and the cold rolled silicon steel sheets, which improves performance of the iron core. Utilizing structural characteristics of the iron core of different materials, a fractional turn compensation of coils is formed, which realizes a precise measurement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.