Power supply switching device and switch board
US9825488B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2013 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | May 4, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/56
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply switching device and switch board checks whether or not a primary-side voltage of a remote shutoff breaker and a secondary-side voltage thereof become a rated voltage after a commercial power system is recovered from a blackout. Next, when both primary-side voltage and secondary-side voltage become the rated voltage, a contactor is actuated to interconnect a home power system with the commercial power system. Hence, charging of the home power system without causing a user to notice such a charging upon recovery of the commercial power system from a blackout can be prevented. As a result, the safety for the user can be ensured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.