Upstream/downstream arc fault discriminator
US6987389B1 · kind B1 · utility
38Cited by
11References
55Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2001 |
| Grant date | Jan 17, 2006 |
| Priority date | — |
| Expiry date | Nov 24, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/44
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An arc fault protection device protects a branch circuit portion of an electrical distribution system. The branch circuit is connected to a load. A first sensor detects fluctuations in load current, while a second sensor detects fluctuations in line voltage. The polarities of the fluctuations are compared, and the comparison indicates whether an arc signature, potentially indicative of an arc fault, is located in the branch circuit portion or located in a remainder of the electrical distribution system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.