Pneumatically operable current protection device for a fault current limiter
US10396548B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2017 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Oct 28, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/004
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Embodiments of the disclosure provide a current protection device for a fault current limiter, the current protection device including a detection circuit electrically coupled between a current transformer and a pneumatic timer, and an electrical vacuum interrupter (EVI) coupled to a pneumatic cylinder. In some embodiments, the EVI includes a set of breaker contacts, wherein the pneumatic timer is communicatively coupled with the pneumatic cylinder to actuate a moveable contact of the set of breaker contacts. In some embodiments, the detection circuit is configured to detect a current of the current transformer, and to provide a control signal to the pneumatic cylinder to open or close the set of breaker contacts based on the detected current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.