Solid-state trip device of a molded case circuit breaker
US4878144A · kind A · utility
83Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 29, 1988 |
| Grant date | Oct 31, 1989 |
| Priority date | — |
| Expiry date | Sep 29, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2071/2427
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A solid-state trip device including an instantaneous trip device formed by arc detectors 46R, 44S, 46T located in proximity to the main contacts 17R, 17S, 17T of the circuit breaker 10. The light signals emitted by the arc detectors 46R, 46S, 46T are transmitted by optical fibers 48 to a light-sensitive electronic component which emits an arcing signal. This arcing signal causes tripping of the circuit breaker 10 only if a fault signal is present.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.