Methods, systems, and apparatus for detecting arc flash events using current and voltage
US8649139B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2010 |
| Grant date | Feb 11, 2014 |
| Priority date | — |
| Expiry date | Feb 6, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/38
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power circuit protection system includes a current sensor configured to measure a first current level through a conductor of the circuit, a voltage sensor configured to measure a first voltage level across a plurality of conductors of the circuit, and a controller communicatively coupled to the current sensor and to the voltage sensor. The controller is configured to receive a first signal from the current sensor, wherein the first signal is representative of the first current level, and receive a second signal from the voltage sensor, wherein the second signal is representative of the first voltage level. Based on the first signal and the second signal, the controller is configured to determine whether to activate a first circuit protection device or a second circuit protection device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.