Patent · US Active

Method and device for the detection of current asymmetries in three-phase circuits

US8531179B2 · kind B2 · utility

0Cited by

7References

14Claims

0Family size

Assignee

PHOENIX CONTACT GMBH & CO. KG · DE

Inventors

Daniel Hawel · Detmold, DE
Andre Korrek · Marienmünster, DE
Elmar Schaper · Lügde, DE
Stephan Hansmeier · Bad Salzuflen, DE
Lutz Heuer · Blomberg, DE
Bernd Schulz · Radebeul, DE

Key dates

Filing date	Sep 7, 2011
Grant date	Sep 10, 2013
Priority date	—
Expiry date	Apr 16, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG01R29/16
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A device (10) for the detection of current asymmetries in three-phase circuits (L1, L2, L3) is provided. This device (10) has a first current measuring mechanism (S1) for the measurement of first phase (L1) and a second current measuring mechanism (S3) for the measurement of a second phase (L3). Furthermore, the device has a computing unit (ALU) which determines a current symmetry value (N2, 3; N1, 2) of the third phase (L2) relative to the first phase (L1) or second phase (L3) from the measured first phase and from the measured second phase. Moreover, an associated method is also provided.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.