Evaluation of the integrity of depressed contacts by variation of the rotation of the pole-shaft
US8264232B2 · kind B2 · utility
5Cited by
13References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 27, 2010 |
| Grant date | Sep 11, 2012 |
| Priority date | — |
| Expiry date | Feb 10, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2071/048
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device for measuring the wear of the contacts of a switchgear device is described. The switchgear device is of the open circuit breaker type with offset pole-shaft, and the movable contact is mounted on a sliding support. Measurement of the wear of the contacts is based on evaluation of the over-travel of the movable contact in the closed position when the latter slides in its support. This over-travel is determined by measuring the residual rotation of the pole-shaft, preferably by a contact-less magnetic rotation sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.