Coil current regulator with induced flux compensation in an electromagnetic contactor system
US5315471A · kind A · utility
6Cited by
1References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1992 |
| Grant date | May 24, 1994 |
| Priority date | — |
| Expiry date | Jun 1, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H47/002
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The coil holding current of a contactor is regulated to the lesser of two measurements of coil current during each cycle of the full-wave rectified control voltage to compensate for induced flux in the coil generated by load current through the main contacts of the contactor, thereby preventing uncontrolled drop out of the contactor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.