Digital circuit interrupter with electric motor trip parameters
US4967304A · kind A · utility
35Cited by
8References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 11, 1988 |
| Grant date | Oct 30, 1990 |
| Priority date | — |
| Expiry date | Oct 11, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/0935
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A digital circuit interrupter includes a microprocessor programmed for tailored overcurrent protection to industrial power systems containing a plurality of electric motors as well as motor protective relays. A communication link permits the overcurrent set points to be selectively set within the microprocessor memory from a remote location. The tailored overcurrent motor trip parameters are then derived by means of a logarithmic interpolation algorithm which resides in the microprocessor memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.