Technique for fault isolation and transient load isolation for multiple electrical loads connected to a common electrical power source
US6982860B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2002 |
| Grant date | Jan 3, 2006 |
| Priority date | — |
| Expiry date | Aug 17, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A central office transceiver-installed current limiter and regulator provides fault isolation and transient load isolation in a wireline communication network, having multiple transceivers connected by respective span-powered wirelines to a common power source at the central office. Using a current-sense resistor and controlled switch in series with the wireline, the current-limiter and regulator processes input electrical power from the power source prior to coupling that power to a remote transceiver. To prevent overheating and substantial power dissipation in the current-limiting circuitry in the event of a prolonged fault condition, the controlled switch is alternately turned on and off.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.