Protective relay devices
US4056839A · kind A · utility
4Cited by
6References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 19, 1976 |
| Grant date | Nov 1, 1977 |
| Priority date | — |
| Expiry date | Jan 19, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/302
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a static protective relay device utilizing a converter including a bandpass filter which causes time delay during transients, there are provided a detector responsive to the output from the converter, and means for preventing misoperation of the detector due to an attenuating oscillation of the output caused by the transient phenomenon of the converter which occurs during attenuation of the output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.