Circuit testing closer apparatus and method with in-rush current awareness
US8681462B2 · kind B2 · utility
2Cited by
10References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2006 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Nov 30, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H51/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit testing closer is capable of closing a power distribution circuit and interrupting the resulting current at the next current zero. Upon detecting a fault, the circuit testing closer is operable to open contacts to isolate the fault. Next, the circuit testing closer tests the faulted line to determine whether the fault has cleared. The circuit testing closer may generate a first test signal having a first polarity and a second test signal having a second polarity opposite the first polarity. Generation of the second test signal may be limited to occur when the first test signal indicates a fault.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.