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Enameled Wire

Enameled Rectangular Copper Wire

Enameled Rectangular Copper Wire is a high-performance winding wire widely used in distribution transformers, generators, motor windings, and various electrical equipment requiring reliable insulation and high thermal stability.

CopperConductor

RectangularProfile

EnamelInsulation

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Product Overview

Conductor

High-conductivity copper or aluminum conductor options, with oxygen-free copper providing conductivity exceeding 100% IACS after annealing.

Winding Requirements

Available in rectangular dimensions with thicknesses of 0.80–5.60 mm and widths of 2.00–16.00 mm, plus thermal classes from 120°C to 220°C to meet different winding and operating requirements.

Insulation

Coated with high-quality enamel insulation, with recommended film thicknesses of 0.08–0.17 mm and single- or dual-coating options for reliable electrical insulation and thermal performance.

Technical Specifications

We offer a full range of Rectangular Enameled Wire in the following thermal classes, all producible to IEC 60317, GB/T 7095, or customer-specified standards:

Product Type	Thermal	Description
120 Class Polyvinyl Acetal Enameled Rectangular Wire	120°C	General-purpose enameled wire with good mechanical strength
130 Class Polyester Enameled Rectangular Wire	130°C	Standard thermal rating, widely used in general electrical equipment
180 Class Polyesterimide Enameled Rectangular Wire	180°C	High-temperature resistance, excellent thermal stability
200 Class Polyesterimide Overcoated Polyimide Enameled Rectangular Copper Wire	200°C	Dual-coating system for superior thermal performance
220 Class Polyamideimide Enameled Rectangular Wire	220°C	Highest thermal rating, ideal for extreme operating conditions

Parameter Range

Conductor Thickness (a)	0.80 – 5.60 mm
Conductor Width (b) 2.00	2.00 – 18.00 mm
Recommended Insulation Film Thickness	0.08 – 0.15 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

Insulation Materials

Premium domestic and international enameled wire insulating varnishes.

Key Advantages

High-Conductivity Copper Conductor

Made from oxygen-free copper with oxygen content below 20 ppm and conductivity exceeding 100% IACS after annealing, supporting efficient electrical performance.
Thin & Uniform Insulation

The Rectangular Enameled Wire features a recommended insulation film thickness of just 0.08–0.15 mm, helping maximize winding space and achieve compact coil designs.
Wide Thermal Class Range

Rectangular Enameled Copper Wire is available in thermal classes from 120°C to 220°C, providing suitable insulation systems for different operating temperatures.

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 Rectangular Enameled Copper Wire used for?

Rectangular Enameled Wire is mainly used for transformers, generators, electric motors, and compact high-voltage windings.

What thermal classes are available?

We offer 120°C, 130°C, 180°C, 200°C, and 220°C thermal classes for different operating conditions.

What conductor sizes are available?

The standard conductor range is 0.80–5.60 mm in thickness and 2.00–18.00 mm in width, with custom dimensions available.

Is corona-resistant Rectangular Enameled Wire available?

Yes. Corona-resistant options are available for wind power generators, traction motors, and variable frequency motors exposed to high-frequency or surge voltages.