Swell sustaining transient voltage surge suppressor
US8300377B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2009 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Feb 12, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/042
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A transient voltage surge suppressor assembly comprising: a first energy absorbing device; a second energy absorbing device in parallel with the first device; and a voltage sense circuit configured to take the first device off-line when a voltage swell lasts for a duration. The first and second devices may be wired in parallel between a line and a neutral. The assembly may include a third energy absorbing device wired between the line and a ground, the third device also being configured to be taken off-line when the voltage swell lasts for the duration. The voltage sense circuit may be powered by a line voltage or a lower supply voltage. The first device may be more sensitive than the second device. For example, the first device may have a lower clamping voltage than the second device. The first device may be smaller and/or include fewer components than the second device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.