PEW / EIW Polyester and Polyester-Imide Enameled Copper & Aluminum Magnet Wire

Product Overview

PEW / EIW Enameled Magnet Wire is an insulated winding wire available with copper or aluminum conductors. It is designed for electrical coils, transformers, motors, generators, relays, and other electromagnetic applications. The conductor is coated with a durable enamel insulation system to provide reliable electrical insulation, thermal performance, and winding capability.

PEW generally refers to polyester-enamelled magnet wire, while EIW typically refers to polyester-imide-enamelled magnet wire. PEW is commonly used in general electrical winding applications, while EIW is suitable for applications requiring enhanced thermal resistance.

Copper and aluminum conductors are available to meet different electrical, weight, cost, and equipment design requirements.

Specifications

APPLICATIONS

• Motors and generators

• Power and distribution transformers

• Dry-type transformers

• Electrical coils and inductive components

• Relays and solenoids

• Industrial electrical equipment

• Small appliances

• Automotive electrical components

STANDARDS

• Applicable IEC 60317 specifications

• Applicable NEMA MW 1000 specifications

• JIS C 3202, where applicable

• Customer-specific technical specifications

The applicable standard and product designation depend on the conductor material, insulation system, dimensions, and required performance.

CONSTRUCTION

Conductor:

Copper or aluminum conductor manufactured to the required dimensions and surface quality for electrical winding applications. Material selection depends on electrical conductivity, weight, cost, and equipment design requirements.

Insulation:

A continuous enamel coating is applied to the conductor to provide electrical insulation, dielectric performance, and resistance to heat and common winding stresses.

Insulation System:

PEW generally uses polyester enamel insulation, while EIW uses polyester-imide enamel insulation. The appropriate insulation system is selected according to the required thermal class and applicable product specifications.

Technical Characteristics

KEY FEATURES

• Copper and aluminum conductor options

• Polyester and polyester-imide enamel insulation options

• Consistent conductor dimensions and enamel coating

• Reliable electrical insulation performance

• Thermal performance matched to the specified insulation class

• Suitable for compatible winding and manufacturing processes

• Multiple conductor sizes and insulation grades, subject to availability

• Custom specifications for different electrical equipment applications

FAQ

Q1: What is PEW / EIW enameled magnet wire?

PEW / EIW enameled magnet wire is an insulated winding wire used in motors, transformers, generators, coils, and other electromagnetic equipment. PEW generally uses polyester enamel insulation, while EIW typically uses polyester-imide enamel insulation.

Q2: Is this product available with both copper and aluminum conductors?

Yes. Copper and aluminum conductor options can be specified according to product availability, electrical requirements, winding design, and applicable technical standards.

Q3: What is the difference between copper and aluminum magnet wire?

Copper offers higher electrical conductivity for a given conductor cross-sectional area. Aluminum is lighter and may reduce conductor material costs, but it generally requires a larger cross-sectional area to achieve comparable electrical resistance. The appropriate material depends on the equipment design and operating requirements.

Q4: What is the difference between PEW and EIW?

The primary difference is the enamel insulation system. PEW generally uses polyester enamel, while EIW uses polyester-imide enamel. Their thermal performance and suitability depend on the specific insulation system and applicable product standard.

Q5: Can copper and aluminum versions be used for transformers and motors?

Both materials can be used in suitable winding designs. However, conductor dimensions, electrical resistance, thermal management, winding processes, and connection methods must be considered when selecting or substituting conductor materials.

Q6: Are different conductor diameters and insulation grades available?

Conductor dimensions, insulation thickness, and applicable insulation grades can be specified according to equipment design, manufacturing capabilities, and relevant standards.

Q7: Which standards can the product comply with?

The product can be specified according to applicable IEC, NEMA, JIS, or customer-specific requirements. The exact standard must be confirmed for the selected conductor material, insulation system, and product dimensions.

Q8: Can the product be customized?

Yes. Conductor material, dimensions, enamel insulation system, insulation grade, and other technical requirements can be discussed according to the intended application and production c