Lightning arrester system for underground loop distribution circuit
US4700258A · kind A · utility
31Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 21, 1986 |
| Grant date | Oct 13, 1987 |
| Priority date | — |
| Expiry date | Jul 21, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01C7/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lightening arrestor system (30) for a pad mounted distribution transformer (18') incorporated in an underground loop distribution circuit has a lighting arrester (32) secured to the transformer parking stand (P) and attached to the pad ground connection. The arrester has a well (38) into which a cable elbow (A) formerly mounted upon a primary terminal bushing (H1B) is inserted. The arrester includes a varistor assembly including metal oxide disks (58). An elbow arrester (24') is mounted upon the terminal bushing which formerly mounted the cable elbow. The arrester obviates the employment of a feed-through device (28).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.