AC/DC current sensor for a circuit breaker
US5615075A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 30, 1995 |
| Grant date | Mar 25, 1997 |
| Priority date | — |
| Expiry date | May 30, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H1/0007
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A current sensor has a closed loop magnetic flux concentrating ferromagnetic core with a gap and a central aperture for receiving a conductor. A Hall generator is positioned in the gap and a secondary winding is positioned on a portion of the core. Current flow in the conductor creates magnetic flux in the core which energizes the secondary winding to provide a power output. Magnetic flux concentrated in the gap causes the Hall generator to output a sensing signal that is proportional to the magnetic flux which is proportional to the current flow in the conductor. The single core is used to simultaneously produce a sensing signal proportional to alternating or direct current flow in the conductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.