Overvoltage protection element and ignition element for an overvoltage protection element
US7817395B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 23, 2005 |
| Grant date | Oct 19, 2010 |
| Priority date | — |
| Expiry date | Feb 23, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T1/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An overvoltage protection element for discharging transient overvoltages with at least two electrodes, with at least one ignition element of insulating material located between the electrodes, and with an air breakdown spark gap which acts between the electrodes, when the air breakdown spark gap is ignited an arc being formed between the two electrodes. An overvoltage protection element is provided with an ignition element which can be produced especially easily, the ignition element being made and arranged such that, between the two electrodes, there is an area of weakened insulation (ignition area) and when there is a voltage on the ignition element, a discharge on the surface of the ignition element leads to a conductive connection between the two electrodes, the conductive connection having a low current carrying capacity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.