Modular overload relay system
US7116538B2 · kind B2 · utility
11Cited by
6References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2003 |
| Grant date | Oct 3, 2006 |
| Priority date | — |
| Expiry date | Mar 13, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H71/0228
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A modular overload relay provides a low cost analog base unit performing overload detection functions and one or more add-on units communicating with the base unit through an electric conductor on a side of the base unit to which the add-on module may be attached. The add-on units augment the circuitry of the base unit through additional analog or microprocessor-based circuitry communicating with various points within the analog circuitry of the base unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.