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Mica Tape Wrapped Wire

Mica Tape Wrapped Copper Wire

Mica Tape Wrapped Copper Wire uses high-quality copper as the conductor. The annealed conductor provides good flexibility for wrapping and forming. The product is insulated with high-quality polyester mica tape or polyimide mica tape, tightly wrapped around the conductor with a controlled overlap, forming a reliable high-temperature-resistant insulation layer. It is suitable for applications requiring high-temperature and fire-resistant insulation.

CopperConductor

Round / RectangularProfile

Mica Tape Insulation

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Product Overview

Conductor

Made from high-quality oxygen-free copper rods, with an oxygen content below 20 ppm and conductivity exceeding 100% IACS after annealing. The annealed copper conductor provides good flexibility for wrapping and forming.

Winding Requirements

Rectangular conductor thickness ranges from 0.80–12.00 mm, with widths of 3.00–25.00 mm. The width-to-thickness ratio is ≤ 20, and the maximum cross-sectional area is 200 mm². Round conductor diameters range from 2.00–5.00 mm. Semi-hard copper is available in C1, C2, and C3 grades with different proof strength ranges.

Insulation

Uses high-quality polyester mica tape or polyimide mica tape, tightly wrapped around the conductor with a controlled overlap to form a reliable insulation layer. It is suitable for electrical applications requiring high-temperature resistance and fire-resistant insulation.

Technical Specifications

Conductor Size

Rectangular Conductor Thickness (a)	0.80 – 12.00 mm
Rectangular Conductor Width (b)	3.00 – 25.00 mm
Width-to-Thickness Ratio (b/a)	≤ 20
Maximum Cross-Sectional Area	200 mm²
Round Conductor Diameter	2.00 – 5.00 mm

Values shown are typical ranges — exact parameters are confirme.

Material Description

Conductor Materials

① Copper Conductor:
• Made from high-quality oxygen-free copper rods
• Oxygen content < 20 ppm
• Conductivity after annealing > 100% IACS

② Aluminum Conductor:
• Made from high-quality electrical grade aluminum rods
• Conductivity after annealing > 62% IACS

Recommended Proof Strength (Rp0.2) for Semi-Hard Copper:

Grade	Rp0.2 Range	Resistivity Requirement
C1	100 – 180 N/mm²	1/58 Ω·mm²/m (when Rp0.2 < 200 N/mm²)
C2	180 – 220 N/mm²	1/57.5 Ω·mm²/m (when Rp0.2 > 200 N/mm²)
C3	220 – 260 N/mm²

Key Advantages

Excellent Electrical Conductivity

Oxygen-free copper provides >100% IACS conductivity after annealing, while electrical-grade aluminum provides >62% IACS.
High-Purity Copper Conductor

Copper rods have an oxygen content of <20 ppm, supporting stable electrical and material performance.
High Current-Carrying Capacity

Rectangular conductors support a maximum cross-sectional area of 200 mm², suitable for high-current winding applications.
Controlled Mechanical Performance

Semi-hard copper is available in C1–C3 grades, with Rp0.2 ranging from >100 to 260 N/mm², allowing different strength levels to meet specific winding requirements.

Typical Applications

Customization & Technical Support

Share your drawings and operating equiprements so ourteam can review the right specification.

Discuss Your Requirements

Conductor dimensions

Insulation requirements

Winding and processing needs

Packaging and delivery requirements

Why Choose Yuheng

Engineering Support

Work with us to select suitable materials and specifications for your application.

Quality & Traceability

Consistent manufacturing processes with material traceability.

Manufacturing

Flexible production to support different specifications and customer requirements.

Delivery Coordination

Work with our team on production scheduling and delivery arrangements.

Frequently Asked Questions

What is Mica Tape Wrapped Copper Wire used for?

They are mainly used in fire-resistant cables, motors, generators, transformers, and high-temperature electrical equipment.

What conductor materials are available?

We offer copper and aluminum conductors, with copper conductivity exceeding 100% IACS and aluminum conductivity exceeding 62% IACS after annealing.

What types of mica tape are available?

We offer polyester mica tape and polyimide mica tape, depending on the required temperature resistance and application.

Can the wrapping thickness and overlap be customized?

Yes. The insulation thickness and wrapping overlap can be customized according to the required insulation performance and application. We offer customization of conductor material, dimensions, mechanical properties, insulation material, wrapping method, and packaging.