Self-supplied electronic protection device for automatic circuit-breakers
US7417840B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2005 |
| Grant date | Aug 26, 2008 |
| Priority date | — |
| Expiry date | May 7, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/0935
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electronic self-supplied protection device for automatic circuit-breakers that includes: a supply device that draws energy from the stretch of electrical network protected by said circuit-breaker; a control device with at least two levels of operation, where the first of the at least two levels of operation being associated to the function of protection from instantaneous short-circuit SCinst. In addition, second and possible further levels of operation of the self-supplied protection device are associated with further functions of said protection device; a selective interface device including means for regulating the supply, which, in a first step, immediately following upon closing of the circuit by the circuit-breaker, supply the first level of operation, and, after a controlled period of time, supply also the second and possible further levels of operation of said control device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.