Rogowski coil type sensor for measuring current, measuring device and electrical circuit breaker including such a sensor, and method for winding such a sensor
US10365305B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2017 |
| Grant date | Jul 30, 2019 |
| Priority date | — |
| Expiry date | Oct 26, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R15/181
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The Rogowski coil type sensor for measuring current includes a carrier and at least one secondary winding. The winding includes: at least one internal layer with a high turn density, which layer is wound in an “outward” first winding direction from the first end to a second opposite end of the winding, and at least one external layer with a low turn density, which layer is wound in a “return” second winding direction. The external layer with a low turn density includes: a first compensating portion with a high turn density, which portion is of small length and close to the first end, a central portion with a low turn density, which portion is of large length, and a second compensating portion with a high turn density, which portion is of small length and close to the second end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.