Arrangement for the potential-free measurement of currents
US8680856B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 18, 2008 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Dec 31, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R15/205
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An arrangement for potential-free measurement of current flowing in two primary conductors arranged in parallel in opposite directions of each other. The magnetic differential field is detected by a differential field sensor. The primary conductors and the differential field sensor are disposed between two metal shield plates made of a highly permeable material. Each shield plate has a web and the webs extend on both sides of the arrangement of the primary conductors in parallel to the arrangement. At least one shield plate has a U-shape in cross-sectional planes having one pair of limbs that extend at a right angle in a longitudinal direction to the U-shaped cross-sectional planes. At least one limb of one shield plate is aligned toward the other shield plates on one of the limbs while leaving an air gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.