Controlled switching devices and method of using the same
US10096993B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 8, 2014 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | Dec 18, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
It is disclosed a technique to reduce significantly the arc flash incident energy in commercial and industrial electrical installations connected to typical electric distribution networks, by limiting transformer inrush current and allowing more sensitive protection settings. It also disclosed a technique to increase the energy capacity of these installations. Inrush current reduction is achieved through the use of a Controlled Switching Device (CSD). It is disclosed a method for lowering an arc flash inside an electrical circuit comprising a breaker and being electrically fed with an electrical current, the method comprising the step of providing the electrical circuit with a CSD adapted to send an open or close command to the breaker in order to synchronize an open and close mechanical operation, preferably at an optimal electrical angle. It is also disclosed an electric circuit comprising a CSD for lowering an arc flash inside the circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.