Motor protection device
US4319298A · kind A · utility
54Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1979 |
| Grant date | Mar 9, 1982 |
| Priority date | — |
| Expiry date | Aug 28, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/0852
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor protection device is provided that monitors motor currents and motor temperatures and provides protective functions whose characteristics are based on field settable data and motor operating conditions. The protective functions provided are overtemperature, overload, instantaneous overcurrent, ground fault, phase unbalance, and phase reversal. Field settable data is entered by means of a keyboard and consists of motor trip points for the protective functions, and motor and system parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.