Capacitor protective device
US4112474A · kind A · utility
32Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1977 |
| Grant date | Sep 5, 1978 |
| Priority date | — |
| Expiry date | Jan 27, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to an indicator and/or interrupter circuit for an electrical capacitor. On the build-up of internal pressure in the capacitor a switch is caused to operate to open a set of contacts which thereby energizes an indicating lamp to provide a visual indication of a failed or over-pressure condition in the capacitor. The opening of the switch may also cause an interruption of current flow through a holding coil and this current interruption causes a circuit interrupter to operate mechanically and thereby remove the capacitor from its circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.