Current sensing apparatus
US7427856B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 29, 2006 |
| Grant date | Sep 23, 2008 |
| Priority date | — |
| Expiry date | Mar 15, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R15/185
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a current sensing apparatus which includes a first current transformer that, when energized, has a first input current and a first output current, the first output current being less than the first input current, the first current transformer stepping down the current. The current sensing apparatus includes a second current transformer in electrical communication with the first current transformer that, when energized, has a second input current and a second output current, where the second input current is substantially less than the first output current. The second output current being greater than the first output current, the second current transformer stepping up the current. The stepped up second output current is substantially equal to a nominally rated input current of a low voltage device in electrical communication with the second current transformer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.