High current under oil expulsion fuse
US4320375A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1980 |
| Grant date | Mar 16, 1982 |
| Priority date | — |
| Expiry date | Mar 28, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H85/43
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high current under oil expulsion fuse having a pair of contacts mounted on a dielectric sleeve, a nontracking, nonconducting pressure tube within the sleeve which extends beyond the dielectric housing into a portion of each of the contacts, a fuse link in the pressure tube, a clamp having a metering orifice mounted on one of the contacts to secure the link in the contact and a gas retention chamber mounted on the other contact to secure the link to the other contact, the gas retention chamber being operative to blow high pressure gas through the bore of the pressure tube to assist in clearing arc products and ionized gases from the fuse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.