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Continuously Transposed Conductor CTC-Mesh-wrapped(1).jpg
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Continuously Transposed Conductor CTC-Mesh-wrapped

It is composed of multiple enameled flat copper wires arranged in two standard columns with wide-surface contact and subjected to continuous and precise transposition. Instead of traditional dense paper wrapping for the outer layer, electrical insulating mesh tape (polyester/aramid mesh tape) is adopted for lashing/winding. A thin insulating buffer layer is added in some designs, retaining mesh gaps to balance insulation, mechanical protection and oil flow channels.

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    Technical Specifications

     Dimension Mesh-Wrapped Transposed Conductor
    Outer Insulation Structure Wound with polyester/aramid electrical insulating mesh tape, retaining mesh gaps with permeable structure; some with a thin buffer layer without blocking mesh holes
    Heat Dissipation/Oil Permeability Mesh holes serve as dedicated oil flow channels, oil can reach conductors directly with far superior heat dissipation and oil permeability
    Mechanical Resistance Mesh structure with high toughness, better resistance to short-circuit impact and vibration deformation
    Insulation Stability Insulation performance depends on mesh tape density (customizable) with relatively lower stability
    Applicable Environment Oil-immersed environment only; dust accumulation in dry-type application impairs insulation performance
    Typical Application Scenarios Railway traction transformers, wind/photovoltaic step-up transformers, large oil-immersed power transformers, metallurgical/ship special transformers and other harsh working conditions with high vibration and heat dissipation requirements
    Winding Formability Higher flexibility with close fit during winding, and higher winding efficiency
    Key Production Process Points Focus on controlling mesh tape tension uniformity and transposition pitch accuracy, customize mesh density to match insulation/heat dissipation requirements, and avoid damaging the base wire enamel film

    Core Advantages

    • Ultra-low eddy current loss, significantly improving transformer efficiency

    • High mechanical strength and short-circuit resistance, suitable for large-capacity equipment

    • Compact structure, saving winding space and improving heat dissipation.

    Production Process Flow

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    Industry Application 

    Industry Typical Application Scenarios Description
    Large Power Equipment Windings for oil-immersed power transformers of 110kV and above, ultra-high voltage main transformers Greatly reduces eddy current loss through conductor transposition, improving equipment efficiency and stability
    Power Grid Supporting Facilities Windings for series reactors, shunt reactors, and large-capacity dry-type transformers Solves the temperature rise and loss problems under high-current operating conditions, extending equipment service life
    Industrial & Special Scenarios Railway traction transformers, large generator stator windings, nuclear/wind power supporting transformers Scenarios with extremely high requirements for space utilization, heat dissipation performance and mechanical strength

    Special Scenario Recommendations
     1. For outdoor new energy supporting transformers (wind power/photovoltaic): For oil-immersed designs, mesh-wrapped transposed conductors are the first choice, leveraging their high heat dissipation performance to adapt to complex outdoor environments.

     2. For indoor distribution/conventional power transformers: paper-insulated transposed conductors are the first choice, meeting general application requirements while controlling costs.

     3. For special transformers (metallurgical, marine, traction): Regardless of capacity, mesh-wrapped transposed conductors are recommended if the application involves high vibration and high heat dissipation requirements.

    application scenario display

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