Tank-type oil circuit-interrupter with jet forces counterbalancing the magnetic forces
US4090052A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1976 |
| Grant date | May 16, 1978 |
| Priority date | — |
| Expiry date | Apr 27, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/92
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A tank-type oil circuit-breaker has a pair of arc-extinguishing grid-structures disposed interiorly within the oil tank, each of said arc-extinguishing grid-structures having a pair of outwardly-directed horizontally-laterally-spaced venting ports, with the angular direction, or divergence between the two horizontally-spaced venting ports of somewhat critical angular magnitude. The construction is such that the two spaced venting ports on each arc-extinguishing grid structure collectively produce a resultant inwardly-directed jet force, which substantially counterbalances the outwardly-directed magnetic and mechanical forces resulting from the U-shaped line-current flow passing through the circuit-interrupter. The angular separation, or angular divergence provided between the two horizontally-laterally-spaced venting ports of each arc-extinguishing grid-structure falls within the range of angular magnitude of 80.degree. to 160.degree.. A desirable divergence range is between 100.degree. and 140.degree., and preferably, the angular divergence is desirably 120 angular degrees.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.