PEW / EIW, Copper Enameled Wire, Polyester and Polyester Imide Copper Enameled Wire for Electrical Insulation in Motors Transformers Generators and Coils

PEW / EIW

Copper Enameled Wire

Product Overview

PEW / EIW Copper Enameled Wire is an insulated copper magnet wire designed for electrical coils, transformers, motors, generators, relays, and other electromagnetic applications. The conductor is made of high-conductivity copper and coated with a durable enamel insulation system to provide reliable electrical insulation and thermal performance.

PEW is commonly associated with polyester-based enamel insulation, while EIW generally refers to polyester-imide enamel insulation, offering higher thermal resistance for demanding winding applications.

Specifications

APPLICATIONS

• Motors and generators

• Power and distribution transformers

• Dry-type transformers

• Electrical coils

• Relays and solenoids

• Industrial electrical equipment

• Small appliances

• Automotive electrical components

STANDARDS

• IEC 60317

• NEMA MW 1000

• JIS C 3202

• Customer-specific technical specifications

CONSTRUCTION

Conductor:
High-conductivity annealed copper wire with a smooth and uniform surface.

Insulation:
A continuous enamel coating is applied to the copper conductor to provide electrical insulation, mechanical protection, and resistance to heat and common winding stresses.

Insulation System:
PEW generally uses polyester enamel insulation, while EIW uses polyester-imide insulation for applications requiring improved thermal performance.

Technical Characteristics

KEY FEATURES

• High electrical insulation performance

• Excellent winding capability

• High-quality copper conductor

• Uniform enamel coating

• Good thermal stability

• Good abrasion resistance

• Suitable for automated winding

• Compatible with a wide range of electrical equipment

FAQ

Q1: What is PEW copper wire?
PEW is an enamelled copper magnet wire generally using polyester insulation and is widely used for electrical windings.

Q2: What is EIW copper wire?
EIW is enamelled copper magnet wire with polyester-imide insulation, typically used where higher thermal resistance is required.

Q3: What is the difference between PEW and EIW?
The primary difference is the insulation system. PEW commonly uses polyester enamel, while EIW uses polyester-imide enamel and generally provides a higher thermal class.

Q4: Can PEW / EIW be used for transformers?
Yes. Both can be used for transformer and coil windings, with the appropriate insulation class selected according to the operating temperature and design requirements.

Q5: Is the product available in different conductor diameters?
Yes. Conductor diameter, insulation thickness, and insulation grade can be customized according to equipment design and applicable standards.

Q6: What standards can be supplied?
PEW / EIW copper enamelled wire can be manufactured according to applicable IEC, NEMA, JIS, or customer-specific requirements.