Faulted current indicator with protection against temporary overloads and transients
US5136456A · kind A · utility
11Cited by
6References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1989 |
| Grant date | Aug 4, 1992 |
| Priority date | — |
| Expiry date | Nov 17, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H1/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The disclosed faulted current indicator ignores temporary overloads and transients by inhibiting any trip resulting from an overcurrent signal until a disabling circuit senses that a fuse or circuit breaker has reduced the line current to zero.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.