Continuously Transposed Conductors And Assemblies
A continuously transposed conductor (CTC) cable may include a plurality of electrically insulated strands arranged in two stacks with the plurality of strands successively transposed between the two stacks. Each strand may include a conductor and insulation formed at least partially around the conductor. Additionally, each strand may have a cross-sectional area that is less than approximately 0.0030 square inches. As a result, the CTC cable may be suitable for use in electrical devices relatively smaller than those associated with conventional CTC cables.
1 . A continuously transposed conductor (CTC) cable comprising:
a plurality of electrically insulated strands arranged in two stacks with the plurality of strands successively transposed between the two stacks, each strand comprising:
a conductor, and
insulation formed at least partially around the conductor, wherein each strand has a cross-sectional area that is less than approximately 0.0030 square inches.
2 . The CTC cable of claim 1 , wherein the plurality of strands comprises between approximately three and approximately one hundred strands.
3 . The CTC cable of claim 1 , wherein the plurality of strands comprises between approximately three and approximately eleven strands.
4 . The CTC cable of claim 1 , wherein each strand comprises a rectangular cross-sectional shape with a width between approximately 0.020 inches and 0.10 inches and a thickness between approximately 0.010 inches and approximately 0.030 inches.
5 . The CTC cable of claim 1 , wherein the CTC cable has a cross-sectional area that is less than approximately 0.020 square inches.
6 . The CTC cable of claim 1 , wherein each transposition is formed with a pitch between approximately 0.1 inches and 1.0 inches.
7 . The CTC cable of claim 1 , wherein each transposition is formed with a pitch that is less than or equal to approximately 0.80 inches.
8 . The CTC cable of claim 1 , wherein each of the plurality of strands has one of a rectangular, square, elliptical, circular, triangular, trapezoidal, hexagonal, octagonal, or polygonal cross-sectional shape.
9 . The CTC cable of claim 1 , wherein at least one of the plurality of strands comprises a plurality of conductors joined or bonded together.
10 . The CTC cable of claim 1 , wherein the CTC cable has a rectangular cross-sectional shape.
11 . The CTC cable of claim 1 , wherein the CTC cable has one of a square, triangular, trapezoidal, hexagonal, octagonal, or polygonal cross-sectional shape.
12 . The CTC cable of claim 1 , further comprising a wrap formed around the plurality of transposed strands.
13 . The CTC cable of claim 1 , further comprising an extruded coating formed around the plurality of transposed strands.
14 . The CTC cable of claim 1 , wherein at least a portion of the plurality of strands further comprise a bond layer formed on the insulation.
15 . A continuously transposed conductor (CTC) cable comprising:
a plurality of strands arranged in two stacks with the plurality of strands successively transposed between the two stacks, each strand comprising:
a conductor, and
insulation formed at least partially around the conductor,
wherein the plurality of strands has a combined cross-sectional area that is less than approximately 0.020 square inches.
16 . The CTC cable of claim 15 , wherein each of the plurality of strands has a cross-sectional area that is less than approximately 0.0030 square inches.
17 . The CTC cable of claim 15 , wherein the plurality of strands comprises between approximately three and approximately eleven strands.
18 . The CTC cable of claim 15 , wherein each transposition is formed with a pitch that is less than or equal to approximately 0.80 inches.
19 . The CTC cable of claim 15 , wherein at least one of the plurality of strands comprises a plurality of conductors joined or bonded together.
20 . An electrical device comprising:
at least one winding of a continuously transposed conductor (CTC) cable, the CTC cable comprising:
a plurality of electrically insulated strands electrically connected in parallel at their ends, each strand comprising (i) a conductor and (ii) an insulation layer formed at least partially around the conductor, wherein each strand has a cross-sectional area less than approximately 0.0030 square inches.
21 . The electrical device of claim 21 , wherein the electrical device comprises an electric motor or generator.
22 . The electrical device of claim 21 , wherein the electrical device comprises a load reactor, an inductor, or a transformer.
23 . The electrical device of claim 21 , wherein the electrical device comprises an electrical device with an operating frequency greater than approximately 60 Hz.
24 . The electrical device of claim 21 , wherein the electrical device comprises an electrical device subject to frequencies exceeding approximately 1 KHz.