Leakage current shunt in an electrical power distribution system utilizing solid state relays
US7538454B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2006 |
| Grant date | May 26, 2009 |
| Priority date | — |
| Expiry date | Aug 16, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H5/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention provides an apparatus for shunting leakage current of a solid state switching device (SSSD) (10). The apparatus selectively provides a shunt pathway to divert current away from the output load based on the switching state of the SSSD. The apparatus may include a shunt impedance component (14) connected to the SSSD, and a switching element (16) for selectively connecting the other end of the shunt impedance component to ground based on the switching state of the SSSD. Accordingly, when the SSSD is turned off, the switching element is switched to a state that connects the shunt impedance component to ground, thereby shunting leakage current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.