Grounding arrangement for a powerline system
US5930099A · kind A · utility
11Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1998 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Jun 30, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A grounding arrangement for a normally ungrounded multi-phase powerline system, which also carries dc information signals. A resistance and a spark gap device are provided in a path between system neutral and a ground. Upon the occurrence of a predetermined fault condition the spark gap device will conduct, and if the voltage developed across the resistance is of a predetermined value, a current bypass path is established around the spark gap device after a predetermined time delay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.