A multilayer conductor includes at least one separation dielectric layer and a plurality of conductor layers stacked in an alternating manner. Each of the plurality of conductor layers includes a first conductor sublayer and a second conductor sublayer separated from the first conductor sublayer by a sublayer dielectric layer. The second conductor sublayer at least partially overlaps with the first conductor sublayer in each of the plurality of conductor layers. The multilayer conductor is included, for example, in a device including a magnetic core adjacent to at least part of the multilayer conductor.

A multilayer conductor includes at least one separation dielectric layer and a plurality of conductor layers stacked in an alternating manner. Each of the plurality of conductor layers includes a first conductor sublayer and a second conductor sublayer separated from the first conductor sublayer by a sublayer dielectric layer. The second conductor sublayer at least partially overlaps with the first conductor sublayer in each of the plurality of conductor layers. The multilayer conductor is included, for example, in a device including a magnetic core adjacent to at least part of the multilayer conductor.

A power supply device is provided for metallurgical equipment, which is to be operated with electric energy with a non-linear load and has a maximum power consumption equal to or greater than 180 MVA, such as for an electric arc furnace having a power consumption equal to or greater than 180 MVA. In such a power supply device, at least two structurally equivalent three-phase furnace transformers (100, 200) having an output power rating equal to or greater than 90 MVA include a delta interconnection (D) on the input side thereof and an external interconnection (iii) on the output side thereof. A low voltage-side parallel circuit (400) of output-side low voltage connectors of the furnace transformers (100, 200) includes symmetrized external delta interconnections implemented as water-cooled high current conductors. The low voltage-side parallel circuit is connectable in an electrically symmetrized manner to electrodes of the metallurgical equipment (10).

A power supply device is provided for metallurgical equipment, which is to be operated with electric energy with a non-linear load and has a maximum power consumption equal to or greater than 180 MVA, such as for an electric arc furnace having a power consumption equal to or greater than 180 MVA. In such a power supply device, at least two structurally equivalent three-phase furnace transformers (100, 200) having an output power rating equal to or greater than 90 MVA include a delta interconnection (D) on the input side thereof and an external interconnection (iii) on the output side thereof. A low voltage-side parallel circuit (400) of output-side low voltage connectors of the furnace transformers (100, 200) includes symmetrized external delta interconnections implemented as water-cooled high current conductors. The low voltage-side parallel circuit is connectable in an electrically symmetrized manner to electrodes of the metallurgical equipment (10).

The objective is to adjust the magnetic resistance at each coil mounting part to the desired level. The inductor includes a core and coils. The core includes the coil mounting parts extending in the Y direction and arranged in the X direction. The coils are externally fitted around each coil mounting part. The positions of the end faces on the Z? direction side of the coil mounting parts are aligned in the Z direction. The position of the end face on the Z+ direction side of at least a predetermined coil mounting part and the position of the end face on the Z+ direction side of another coil mounting part are different from each other in the Z direction. The cross-sectional area of the predetermined coil mounting part and the cross-sectional area of another coil mounting part are different from each other when viewed in the Y direction.

The objective is to adjust the magnetic resistance at each coil mounting part to the desired level. The inductor includes a core and coils. The core includes the coil mounting parts extending in the Y direction and arranged in the X direction. The coils are externally fitted around each coil mounting part. The positions of the end faces on the Z? direction side of the coil mounting parts are aligned in the Z direction. The position of the end face on the Z+ direction side of at least a predetermined coil mounting part and the position of the end face on the Z+ direction side of another coil mounting part are different from each other in the Z direction. The cross-sectional area of the predetermined coil mounting part and the cross-sectional area of another coil mounting part are different from each other when viewed in the Y direction.

A cooling apparatus includes an assembly including an electronic device and a potting material that covers a side portion and an upper portion of the electronic device, the assembly having a conical upper portion, and a cooling plate including a conical hole, into which the upper portion of the assembly is fitted, and a flow path, through which a coolant flows.

A method for cooling an MRI apparatus and an MRI apparatus are provided. The MRI apparatus comprises a magnet, a primary cooling device and a secondary cooling device. The primary cooling device is in contact with the magnet and the secondary cooling device separately. The method comprises continuously monitoring the pressure of the magnet; turning off the secondary cooling device if the pressure is greater than or equal to a first preset pressure, less than a second preset pressure and in a rising state. The method and MRI apparatus can save electricity, and since the use duration of the secondary cooling device is also reduced, the lifespan of the secondary cooling device is prolonged, thus saving costs.

A method for cooling an MRI apparatus and an MRI apparatus are provided. The MRI apparatus comprises a magnet, a primary cooling device and a secondary cooling device. The primary cooling device is in contact with the magnet and the secondary cooling device separately. The method comprises continuously monitoring the pressure of the magnet; turning off the secondary cooling device if the pressure is greater than or equal to a first preset pressure, less than a second preset pressure and in a rising state. The method and MRI apparatus can save electricity, and since the use duration of the secondary cooling device is also reduced, the lifespan of the secondary cooling device is prolonged, thus saving costs.

A subsea AC power supply device comprises a subsea transformer, having a primary winding arranged to be connected to a topside AC power supply via a subsea power supply cable, and a subsea shunt reactor, connected in parallel with the primary winding of the subsea transformer. The subsea transformer and the subsea shunt reactor are arranged within a common subsea watertight housing. A subsea AC power supply system comprises a topside AC power supply, a subsea power supply cable connected to the topside AC power supply, and a subsea AC power supply device connected to the subsea power supply cable.