Only picked up phases recloser control
US6735533B2 · kind B2 · utility
3Cited by
20References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2001 |
| Grant date | May 11, 2004 |
| Priority date | — |
| Expiry date | Feb 12, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/066
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A recloser trips on one phase for single-phase only fault conditions, two phases for two-phase fault conditions, or all three phases for three-phase fault conditions. During power delivery, the recloser monitors the three phases of a power line (e.g., phases A, B, and C). If a fault is detected on one phase, then a timer is started and subsequently decremented. If the timer finishes counting down while the fault is still present, then it is determined if any of the other two phases are timing a fault. If so, then those phases having a fault are tripped. Thus, only the faulted phase(s) is (are) tripped.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.