Arc flash detection
US8223466B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 30, 2009 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Apr 11, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H1/0023
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An arc flash detector includes a light sensor, a light attenuating filter in communication with the light sensor, a housing disposed to support the light attenuating filter and the light sensor, and a logic circuit in communication with the light sensor. The logic circuit is disposed to receive an output of the light sensor and disposed to produce an output signal responsive to a predetermined intensity of light received by the light sensor. The light attenuating filter is disposed to reduce the intensity of light received by the light sensor. The housing is also disposed to retain the light sensor and the light attenuating filter at a fixed orientation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.