US 2012/0056613 A1 · METHOD AND DEVICE FOR THE DETECTION OF CURRENT ASYMMETRIES IN THREE-PHASE CIRCUITS

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 a 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.

Claims14

Dependent claims

A device for the detection of current asymmetries in three-phase circuits, the device comprising:

a first current measuring mechanism for the measurement of a first phase,
a second current measuring mechanism for the measurement of a second phase;
wherein the device has a computing unit which determines a current symmetry value of the third phase relative to at least one of the first phase and the second phase from the measured first phase and from the measured second phase (N2,3;
N1,2);
wherein the computing unit determines a deviation from a specified range from the determined current symmetry value (N2,3;
N1,2) of the third phase relative to at least one of the first and the second phase.

3 more elements

Dependencies are inferred from the claim text.

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

Life of this patent

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

Life of this patent

Abstract

Claims14