Leakage current detection and interruption circuit
US7751161B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 30, 2005 |
| Grant date | Jul 6, 2010 |
| Priority date | — |
| Expiry date | Dec 30, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H1/0069
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit is disclosed for disconnecting a power source upon the detection of a leakage. The circuit comprises a disconnect switch for disconnecting the power source. A primary circuit controls the disconnect switch. A secondary circuit senses a leakage current. An optical switch interconnects the primary circuit and the secondary circuit for opening the disconnect switch upon the secondary circuit sensing a leakage current. The circuit is suitable for use as a leakage current detection and interruption circuit for completely electrically disconnecting and isolating the power source and the primary circuit from the secondary circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.