Switch for a high-voltage interrupting module
US4692577A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 25, 1985 |
| Grant date | Sep 8, 1987 |
| Priority date | — |
| Expiry date | Oct 25, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/106
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An energy-absorbing element is provided between an insulative piston and a movable contact of a switch for a high-voltage device. In arrangements where a fusible element is in electrical shunt with the switch, the energy-absorbing element improves the rapid commutation of the current from the switch to the fusible element where final circuit interruption takes place. The switch is of the general type in which ignition of a power cartridge moves the insulative piston, which is normally located in a bore formed in a conductive member, away therefrom and into a passageway formed in an insulative liner. The movement of the piston moves the movable contact through the passageway and away from the conductive member to break an electrical interconnection between the conductive member and the movable contact. This forms a gap between the conductive member and the movable contact and opens the switch. The ignition of the power cartridge evolves high pressure within a chamber defined by the piston and the bore. This high pressure acts against the piston and the resulting forces rapidly drive the piston; the movable contact being driven via the transmission of forces through the energy-absorb…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.