Ground fault detection
US7719285B2 · kind B2 · utility
11Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2009 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | Feb 18, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a ground fault detection arrangement for a synchronous three-phase electrical machine, and an electrical system comprising a ground fault detection arrangement and a synchronous three-phase electrical machine. The ground fault detection arrangement injects an off-nominal frequency voltage between a neutral point of the synchronous three-phase electrical machine and ground and measure resultant currents to detect a ground fault.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.