Remote drive for disconnector/isolator used in switchgear
US8410389B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2009 |
| Grant date | Apr 2, 2013 |
| Priority date | — |
| Expiry date | May 21, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02B13/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A remotely controlled, motorized drive system for a disconnector used in switchgear. An operator pushes a button on a remote control, which signals a receiver in the disconnector to engage a motor that is coupled to a drive shaft. The drive shaft causes movable contacts of the disconnector to be moved into engagement or out of engagement with sets of fixed contacts in the switchgear that are connected to the line supply and to the circuit breaker that is bolted into the switchgear. One set of contacts is electrically coupled to the line supply, which can carry up to three phases of current. Another set of contacts is connected to corresponding terminals of the circuit breaker. A second motor controls movement of a grounding bar that grounds the circuit breaker to earth. Indicator lights on the switchgear panel indicate the position of the disconnector for visual confirmation of the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.