Fuse holder-under oil drywell loadbreak device
US4321576A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1980 |
| Grant date | Mar 23, 1982 |
| Priority date | — |
| Expiry date | Mar 28, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A drywell fuse holder and a loadbreak fuse assembly, the holder including an arc-extinguishing sleeve located adjacent to the inner contact sleeve, the loadbreak fuse assembly including a non-expulsion fuse having electrical interface assemblies at each end spaced apart a distance less than the distance the inlet to the contact sleeves in the fuse holder, the interface assemblies including a spacer ring to center the fuse assembly in the holder and protect the garter spring contact and an arcing washer to transfer the arc from the garter spring; and an arc-extinguishing follower on the fuse assembly which is pulled through the arc-extinguishing sleeve to extinguish the arc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.