Differential arc fault detection
US7489138B2 · kind B2 · utility
21Cited by
17References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2006 |
| Grant date | Feb 10, 2009 |
| Priority date | — |
| Expiry date | Aug 1, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/28
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and apparatus detect arc faults. The method and apparatus may digitally detect current and voltage signals at a master node (111) positioned at a first point in a wiring system (131). At a second point in the wiring system (131), a slave node (122) may digitally detect current and voltage signals. An arc fault that develops between the first and second points in the wiring system (131) may be detected by comparing the current signals from the master node (111) and from the slave node (122), and comparing the voltage signals from the master node (111) and from the slave node (122).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.