Method and apparatus for monitoring poly-phase currents in poly-phase equipment
US4241336A · kind A · utility
10Cited by
3References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 13, 1978 |
| Grant date | Dec 23, 1980 |
| Priority date | — |
| Expiry date | Nov 13, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/165
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of and a device for monitoring poly-phase currents in poly-phase equipment, in which a phase signal representative of the current in each phase of the equipment is obtained, the phase signals multiplexed so as to obtain a single multiplexed signal, and the multiplexed signal then processed to extract from it an output signal or signals representative of, for example, overload, unbalance, earth fault or short circuit conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.