Current fault detection system and method for AC controller
US4875000A · kind A · utility
10Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1988 |
| Grant date | Oct 17, 1989 |
| Priority date | — |
| Expiry date | Aug 10, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/0858
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An overcurrent protection system for AC motor control systems which provides a separate overcurrent shut down mechanism for each phase of the AC power used in an AC motor. These separate phase shutdown mechanisms provide protection for minor overcurrent conditions without shutting down the entire motor control system. The overcurrent protection system also provides a mechanical feedback apparatus for totally shutting down the motor control system only in a severe overcurrent condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.