Circuit breaker operating current/fault current measuring device using single Rogowski coil
US12282044B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2021 |
| Grant date | Apr 22, 2025 |
| Priority date | — |
| Expiry date | Aug 10, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F38/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to a circuit breaker operating current/fault current measuring device using a single Rogowski coil has an advantage of reducing an installation space and a manufacturing cost by simultaneously measuring an operating current and a fault current with the single Rogowski coil and has an advantage of improving reliability by simultaneously satisfying accuracy required for measurement of the operating current and the fault current. The circuit breaker operating current/fault current measuring device using a single Rogowski coil according to the present invention is configured with a Rogowski coil installed to wrap around a current-carrying conductor, a protection circuit outputting a fault voltage based on a voltage generated from a tap installed on a portion of the Rogowski coil, and a measurement circuit outputting an operating voltage based on a voltage generated in the entire coil of the Rogowski coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.