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China Suppliers Factory for Large Oil Immersed Power Transformer CTC Conductors with Paper Insulation

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Polyvinyl acetal enameled with paper insulation Continuous Transposed Cable (CTC)

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Continuous Transposed Cable (CTC) represents a cutting-edge solution in winding wires, crafted from a specific number of enameled rectangular wire strips, arranged in two ranks and enveloped in tailored insulation materials. This innovative product is primarily utilized in large-scale oil-immersed power transformers, reactors, and high-capacity dry-type transformers.

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CTC conductors optimize the use of winding space, minimize volume, and reduce overall costs. Importantly, they significantly decrease circumferential losses and eddy current losses resulting from magnetic field leakage. Additionally, these conductors enhance the mechanical strength of windings and expedite the winding process.

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Ideal for the windings of substantial oil-immersed power transformers, reactors, and sizable dry-type transformers, CTC serves as a vital material for transformer construction. Utilizing CTC offers excellent space utilization, minimal eddy current loss, high mechanical durability, and reduced winding time, making it a preferred choice for manufacturers.

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As a leading supplier and factory for Continuous Transposed Cable in China, we are committed to providing high-quality solutions that meet the demands of modern transformer applications.

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    Production Scope
    CTC strips: 5-80 (odd or even).
    Max overall dimension: height: 120mm, width 26mm (tolerance ± 0.05mm).
    Single conductor dimension: Thickness a: 0.90-3.15mm (±0.01mm), Width b: 2.50-13.00mm (±0.01mm).
    Suggested width/thickness ratio of single conductor: 2.0
    Suggested thickness of enamel insulation: 0.08-0.12mm; thickness of bondable epoxy resin: 0.03-0.05 mm.
    Product Scope
    Polyvinyl acetal enameled CTC with paper insulation
    Polyvinyl-adhesive acetal enameled CTC with paper insulation
    Polyvinyl-adhesive acetal semi-hard acetal enameled CTC with paper insulation
    Polyvinyl acetal enameled CTC with special binded
    Composite CTC with step
    Composite CTC with screen wire inside
    Polyesterimide enameled CTC
    Polyvinyl alcohol enameled CTC with PET film insulation
    Product Description
    Number of strips: 7-49
    Single dimension: Thickness of conductor a : 1.00-3.15mm width of conductor b : 3.00-12.50mm
    Suggested ratio of width and thickness: 2.5
    Special dimensions: Please contact us if your dimension is out of above range
    Insulation layers: 24 layers at one time
    Max thickness of CTC: 80mm (excluding insulation)
    Max width: 26mm (excluding insulation)
    Max. Height of CTC bundles: 80mm (excluding paper insulation)
    Max. Width of CTC bundles: 26mm (excluding paper insulation)
    Frequently Asked Questions (FAQ)
    1. What is the production range for CTC strips?
    We can produce CTC with 5 to 80 strips, including both odd and even numbers.
    2. What are the standard conductor dimensions available?
    The single conductor thickness (a) ranges from 0.90mm to 3.15mm, and the width (b) ranges from 2.50mm to 13.00mm, with a tolerance of ±0.01mm.
    3. What types of insulation materials do you offer for CTC?
    We offer various insulation options including paper insulation, PET film, polyvinyl acetal enamel, and bondable epoxy resin.
    4. What is the maximum dimension for CTC bundles?
    The maximum height of CTC bundles is 120mm and the maximum width is 26mm, excluding paper insulation.
    5. Do you provide composite CTC with special configurations?
    Yes, we provide specialized configurations such as composite CTC with steps and composite CTC with screen wire inside.
    6. What is the recommended width-to-thickness ratio for conductors?
    For optimal performance, we suggest a width/thickness ratio (b/a) between 2.0 and 9.0 for single conductors.

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