Residual current detection device
AssigneeVoltafield Technology Corporation
InventorsNai-Chung Fu, Chih-Chao Shih, Ming-Yu Kuo
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Abstract
The present invention provides a residual current detection device comprising a first conductive wire, a second conductive wire, a first magnetic concentrator and a magnetic sensing device wherein the first conductive wire generates a first magnetic field, the second conductive wire is arranged at one side of the first conductive wire for generating a second magnetic field, the first magnetic concentrator is arranged between the first and second conductive wires whereby a highly concentrated magnetic field area is formed between the first and second conductive wires, and the magnetic sensing device is arranged in the highly concentrated magnetic field area for detecting the first and second magnetic fields.
Claims19
A residual current detection device, comprising:
- a first conductive wire, having an electric current flowing therethrough for generating a first magnetic field;
- a second conductive wire, arranged at one side of the first conductive wire, the second conductive wire having the electric current flowing therethrough for generating a second magnetic field;
- a first magnetic field concentrator, arranged between the first conductive wire and the second conductive wire without almost fully surrounding the first and second conductive wires, the first magnetic field concentrator being configured to rearrange the distribution of the first and second magnetic fields such that a uniform magnetic field area having highly homogeneous magnetic field is generated between the first and second conductive wires, whereby a measurable range along an axis between the first and second conductive wires is expanded;
- and
- a magnetic sensor, arranged in the uniform magnetic field area for detecting the first magnetic field and the second magnetic field;
- wherein a flowing direction that the electric current flows in the first conductive wire is the same as a flowing direction that the electric current flows in the second conductive wire, or a vector component of the flowing direction that the electric current flows in the first conductive wire is the same as a vector component of the flowing direction that the electric current flows in the second conductive wire.
Dependencies are inferred from the claim text.