Toroidal vacuum interrupter for modular multi-break switchgear
US8466385B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Apr 7, 2011 |
| Grant date | Jun 18, 2013 |
| Priority date | — |
| Expiry date | Mar 14, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2033/146
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A toroidal vacuum switch/interrupter for modular switchgear is disclosed. The toroidal vacuum module includes a coaxial moving contact drive rod system, which includes a nonconductive tube inside of a moving insulating cylinder. A contact drive rod system drives a contact system. The contact configuration allows the center contact rod to extend completely through the vacuum envelope to drive successive series connected modules. A system of capacitors and resistors is provided in the insulated portion of the contact drive rod, which extends through the module to connect to and balance the voltage between any series connected vacuum modules. A mechanical adjustment system provides contact pressure and a means to adjust out tolerance build-up within the vacuum module to provide the contacts with a uniform set point. This allows multiple vacuum modules to be connected together in series combinations and provides for simultaneous operation of the contacts in each module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.