Tri-mode over-voltage protection and disconnect circuit apparatus and method
US6829129B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2002 |
| Grant date | Dec 7, 2004 |
| Priority date | — |
| Expiry date | May 20, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/042
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A single-phase apparatus and method for protecting for all AC power wires/lines and combinations thereof. The present invention prevents (1) the hazardous condition occurring at the wall receptacle, arising from accidental reversal of the line wire with the neutral wire, from adversely affecting at least one peripheral device in the line, and (2) the overheating and destruction of components in an over-voltage protection circuit by providing an efficient circuit configuration which assures a rapid simultaneous disconnect of both the hot line and neutral power lines. The present invention achieves this by opening the circuit to simultaneously disconnect both line and neutral power lines feeding a load when the over-voltage event occurs in any of three wire pairings: line-to-neutral, line-to-ground, or neutral-to-ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.