Process for identification of the direction of rotation of two periodic electrical signals at the same frequency
US7337083B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2004 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | Oct 12, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R29/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A process and apparatus for identification of the direction of rotation of two periodic electrical signals present on two electrical conductors, particularly of a three-phase power system. In this process, the signals are sampled from two conductors by two wires of the test apparatus provided with a connection to ground via a user of the apparatus. The direction of rotation is determined from information provided by the two signals. The direction of rotation is determined during the zero-crossing of the voltage between the two phase signals. The invention can be used in a apparatus for testing of the direction of rotation of the phases of a three-phase network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.