Auto chopping control during data acquisition for a circuit breaker
US6462921B1 · kind B1 · utility
2Cited by
19References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1999 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Nov 5, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H1/0092
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit breaker system 10 (FIG. 1) using electronic trip units 35 is disclosed. The electronic trip units 35 are coupled to a communications bus 30 whereby the electronic trip units 35 can be reconfigured, controlled, and/or monitored by a central computer. Further, the electronic trip units 30 include a data acquisition circuit 100 (FIG. 4) that uses chopping to provide better accuracy and increased dynamic range of current measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.