Circuit breaker for hierarchically controlling short-circuit current and trips
US9633811B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2016 |
| Grant date | Apr 25, 2017 |
| Priority date | — |
| Expiry date | Aug 10, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H71/125
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention discloses a short circuit current hierarchical control tripping parameter circuit breaker. According to the invention, resistance of an alloy magnetic resistance body is changed through circuit current, and contract control can be carried out on short-circuit current. The control range of the circuit breaker can achieve that no magnetic resistance will be generated when current is no more than 8 times of rated operational current, and current limiting may be realized by the magnetic resistance when current is 8 times more than rated value. In this way, hierarchical control on short-circuit current of different levels of circuits can be carried out, and short-circuit current can be limited in a predetermined range, thereby restricting the short-circuit current in a predetermined range, solving a problem of power supply flickering, and avoiding large-area power failure accidents caused by override trip existing in an electrical control switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.