Current Sensor
US6734661B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2002 |
| Grant date | May 11, 2004 |
| Priority date | — |
| Expiry date | Apr 1, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R22/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A current sensor for measuring the load in a fiscal power meter has conductive paths connected between an inlet and an outlet for guiding the load currents through the sensor, and operates by sensing local magnetic fields generated around the conductive paths by the current flowing there through, thereby providing a current measure indicative of the magnitude of a given load. The sensor is distinguished by plural current coil elements arranged in a substantially common plane so as to be substantially insensitive to remotely generated magnetic fields but responsive to local magnetic fields for generating the current measure. The coil elements are disposed in zones having more than two effective centres and exhibiting mutually opposing responses to the remote field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.