Residential circuit arc detection
US6751528B1 · kind B1 · utility
22Cited by
33References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 27, 2000 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Aug 29, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/52
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electronically controlled circuit breaker for detecting arc and a method for detecting arc conditions are disclosed. The circuit breaker and method uses digital Fourier transformation on sampled line current signals and bins the even, odd, and fundamental transforms. Even arc signals and non-harmonic arc signals are calculated from the values in the bins and used within an expert arc algorithm which uses an accumulator to sum an increment based on whether the even arc signals and non harmonic arc signals exceed a fixed threshold. A trip signal is issued when the increment exceeds a predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.