Guard for a high voltage electrical terminal bushing
US4201883A · kind A · utility
Inventor
Key dates
| Filing date | Nov 3, 1977 |
| Grant date | May 6, 1980 |
| Priority date | — |
| Expiry date | Nov 3, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2027/404
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A guard for a high voltage terminal bushing includes a generally circular planar isolating member of an electrically insulating material which is mounted on the upper surface of the bushing and provided with a plurality of openings through which wind and rain may freely pass. A radial diameter of the isolating member is sufficient to prevent small animals from contacting a high voltage cable connected to the bushing and ground potential. A cylindrical section extends downwardly from the isolating member to support the guard on the upper surface of the bushing. A second cylindrical member extends downwardly and surrounds the upper portion of the bushing to form a cap to protect and shield the terminal end of the bushing. A lightning arrestor may be included which extends from adjacent the high voltage terminal to a point adjacent a transformer housing or ground potential.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.