Openable current transformer comprising a flexible magnetic core
AssigneeSocomec
InventorsDominique Gautard, Thierry Save, Vincent Begotto
Life of this patent
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Abstract
An openable toroidal current transformer is intended to close over at least one electrical conductor in which an electrical current to be measured circulates. The current transformer includes a magnetic circuit, and an electrically conducting coil wound around the magnetic circuit and electrically insulated from the magnetic circuit. The coil comprises a single winding or several distinct windings coupled in series. The magnetic circuit comprises a set of wires of magnetic material assembled in the form of a strand, allowing having uniform flexibility in all directions for the magnetic circuit.
Claims16
An openable current transformer intended to close over at least one electrical conductor in which circulates an electrical current to be measured, the current transformer including a magnetic circuit and an electrically conducting coil wound around the magnetic circuit and electrically insulated from the magnetic circuit, said coil comprising a single winding or several distinct windings coupled in series,
- wherein said magnetic circuit comprises a set of wires of magnetic material, the wires being twisted together in the form of a strand to form a cable having uniform flexibility in all directions for the magnetic circuit, and
- wherein the coil comprises a plurality of distinct windings coupled in series, at least two windings comprising electrically insulating conducting wire and being radially superimposed to form a stack in a radial direction relative to the winding axis of the coil.
A current transformer configured to measure an electrical current that circulates in at least one electrical conductor, the current transformer comprising:
- a magnetic circuit;
- and
- an electrically conducting coil wound around the magnetic circuit, the electrically conducting coil being electrically insulated from the magnetic circuit,
- wherein the electrically conducting coil includes a single winding or several distinct windings coupled in series,
- wherein said magnetic circuit includes a set of wires of magnetic material, the set of wires being twisted together in the form of a strand to form a cable, the cable having uniform flexibility in all directions for the magnetic circuit,
- wherein the current transformer is an openable current transformer configured to close over the at least one electrical conductor, and
- wherein the coil comprises a plurality of distinct windings coupled in series, at least two windings comprising electrically insulating conducting wire and being radially superimposed to form a stack in a radial direction relative to the winding axis of the coil.
Dependencies are inferred from the claim text.