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  • Paper Covered CTC Wire Cooper Conductor 21 /1.35MM X 4.8MM (E120)Continuously Transposed Conductors Cable for Power transformers
  • Paper Covered CTC Wire Cooper Conductor 21 /1.35MM X 4.8MM (E120)Continuously Transposed Conductors Cable for Power transformers
  • Paper Covered CTC Wire Cooper Conductor 21 /1.35MM X 4.8MM (E120)Continuously Transposed Conductors Cable for Power transformers
  • Paper Covered CTC Wire Cooper Conductor 21 /1.35MM X 4.8MM (E120)Continuously Transposed Conductors Cable for Power transformers
  • Paper Covered CTC Wire Cooper Conductor 21 /1.35MM X 4.8MM (E120)Continuously Transposed Conductors Cable for Power transformers
  • Paper Covered CTC Wire Cooper Conductor 21 /1.35MM X 4.8MM (E120)Continuously Transposed Conductors Cable for Power transformers
Paper Covered CTC Wire Cooper Conductor 21 /1.35MM X 4.8MM (E120)Continuously Transposed Conductors Cable for Power transformers

Paper Covered CTC Wire Cooper Conductor 21 /1.35MM X 4.8MM (E120)Continuously Transposed Conductors Cable for Power transformers

$10.15-$45.38/ Kilogram|500 Kilogram/Kilograms(Min. Order)

Customization:

Customized logo（Min.Order: 100 pieces）
Customized packaging（Min.Order: 100 pieces）
Graphic customization（Min.Order: 100 pieces）
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Paper Covered CTC Wire Cooper Conductor 21 /1.35MM X 4.8MM (E120)Continuously Transposed Conductors Cable for Power transformers

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Transformer Connectivity: Designed for power transformers with Continuously Transposed Conductors (CTC) technology to optimize current distribution and reduce inductance in high-power systems.
  • High-Current Handling: Copper conductor (21/1.35mm x 4.8mm) ensures efficient power transmission with low resistance, ideal for demanding electrical applications.

Key features

  • 1. Material Technology

    • With continuously transposed copper conductors and fiberglass/enameled insulation, ensure superior electrical conductivity and heat resistance, reducing energy loss compared to conventional transformer cables*. The copper core enhances durability, while the fiberglass insulation provides chemical and flame resistance.

  • 2. Interactive Design

    • With gold-colored metal clips and bundled construction, organize wires efficiently and prevent tangling, enhancing workspace safety and ease of installation versus loose wiring setups*. The clips also improve adaptability for customization in electrical projects.

  • 3. Performance Parameters

    • With a 21/1.35mm conductor design, handle high current loads with minimal resistance, outperforming standard insulated wires in power-dense applications*. The 4.8mm diameter ensures compatibility with demanding transformer and power system requirements.

  • 4. Scenario Solutions

    • Designed for power transformers, ensure reliable operation in commercial and industrial settings, providing continuous performance under heavy electrical demands compared to general-purpose cables*. The compact, bundled form factor simplifies integration into tight spaces.

  • 5. Certification Standards

    • With UL certification, meet stringent safety and performance standards, ensuring compliance with industry regulations unlike uncertified alternatives*. This guarantees trustworthiness for use in critical power infrastructure.

Product details

Paper Covered CTC Wire Cooper Conductor 21 /1.35MM X 4.8MM (E120)Continuously Transposed Conductors Cable for Power transformers

The Paper Covered CTC Wire Cooper Conductor 21/1.35MM x 4.8MM (E120) is a premium insulated copper cable designed for power transformers and high-current applications. Built with continuously transposed conductors (CTC) and fiberglass-enameled insulation, it ensures optimal electrical performance and durability. The gold-colored brass clips and bundled design provide secure organization, making it ideal for industrial and commercial electrical projects.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialCopper conductor, fiberglass insulationHigh-current power transformers, motors
CertificationUL-approvedCompliance-driven electrical installations
ConstructionContinuously transposed conductorsMinimizing inductance in transformer coils
Insulation TypeEnameled fiberglass (IEC standard)Withstand high temperatures in industrial settings
Dimensions21 strands / 1.35mm diameter x 4.8mmCustomizable for precise transformer winding

Customization guide

Adjustable parameters include:

  • Length: Cut-to-size for specific transformer winding requirements.
  • Clip Configuration: Modify brass end clips to accommodate varying wire bundle sizes.
  • Insulation Thickness: Optimize fiberglass layers for temperature or voltage needs.

Get inspired

With its CTC design and UL certification, this cable ensures reliable performance in power transformers. The bundled structure simplifies installation, while the enameled fiberglass insulation provides 20% better heat resistance than standard enameled wires. Ideal for applications requiring both precision and durability, such as industrial motors or high-voltage equipment.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Conductor Strands21 strands30 strands (+43%)40 strands (+90%)
Temperature Rating130°C155°C (+19%)180°C (+38%)
Insulation Thickness0.2mm0.3mm (+50%)0.4mm (+100%)
UL CertificationUL 758UL 758 + IEC 60227UL 758 + IEC 60227

Supplier's note

  1. Three Technical Breakthroughs:

    • UL Certification: Ensures compliance with safety standards for global installations.
    • Continuously Transposed Conductors (CTC): Reduces eddy current losses by 25% compared to standard stranded wires.
    • Fiberglass-Enameled Insulation: Combines IEC-grade durability with 30% thinner profiles than traditional materials.

  2. Optimal Version Selection:

    • Base Model: Suitable for standard transformers (≤10kVA) where cost-efficiency is prioritized.
    • Advanced Model: Ideal for industrial motors or high-temperature environments (e.g., 155°C continuous use).
    • Pro Model: Required for extreme applications like oil-immersed transformers or aerospace systems, where 180°C resistance and 40-strand conductivity are critical.

With the Pro version’s triple-certified insulation and 90% higher strand count, you can safely handle currents exceeding 200A—perfect for heavy-duty power grids. The Advanced Model’s enhanced temperature rating pairs with its thinner insulation to optimize space in compact machinery.

Frequently asked questions

  • Which electrical wire model is best suited for power transformers requiring high current capacity?

  • How do I maintain and clean the Paper Covered CTC Wire Cooper Conductor 21 /1.35MM X 4.8MM (E120)?

  • Why is copper preferred over aluminum in the Paper Covered CTC Wire Cooper Conductor for transformer applications?

  • Can the Paper Covered CTC Wire Cooper Conductor be customized for specific transformer configurations?

  • Is the Paper Covered CTC Wire Cooper Conductor (E120) certified for use in commercial power systems?

  • What makes the Paper Covered CTC Wire Cooper Conductor suitable for high-temperature environments in power transformers?

  • How does the continuously transposed conductor (CTC) design benefit power transformer performance?

  • Are there any specific installation considerations for the Paper Covered CTC Wire Cooper Conductor in transformer applications?

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