Arc fault detector and method for locating an arc fault
US7253640B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2003 |
| Grant date | Aug 7, 2007 |
| Priority date | — |
| Expiry date | Aug 19, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H1/0015
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit breaker for locating an arc fault for a protected circuit includes separable contacts interrupting the protected circuit and an arc fault detector determining an arc fault in the protected circuit. An analog to digital converter circuit measures a value of peak arc current at the arc fault detector. Another analog to digital converter circuit provides a peak line-to-neutral voltage. A memory provides an arc voltage operatively associated with the value of peak current. A microprocessor determines a distance from the arc fault detector to the arc fault from the value of peak arc current, a wire resistance per unit length or a wire conductance per unit length, the peak line-to-neutral voltage and the arc voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.