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Single / Double Polyester Fiberglass Insulated Sintered Enameled Copper Flat Wire

This product has good thermal stability and excellent electrical performance. The breakdown voltage is especially more than three times higher than the international standard, reaching up to 6000V. It features a high surface finish, excellent thermal shock resistance, and can operate reliably in long-term high-temperature working environments.

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Technical Specifications

Technical Specifications
Item	Specification
Conductor Material	Oxygen-free copper (≥99.95% purity)
Conductor Shape	Rectangular (flat wire)
Size Range	0.20 × 1.00 mm – 2.50 × 10.00 mm
Insulation System	Polyester fiber + fiberglass reinforced sintered enamel
Thermal Class	Class F / Class H (155°C / 180°C)
Rated Voltage	3 kV – 6 kV
Dielectric Strength	≥ 3,000 V (up to 6,000 V typical)
Insulation Resistance	≥ 100 MΩ·km
Tensile Strength	≥ 150 N/mm²
Elongation	≥ 10%
Thermal Shock	No cracking under standard thermal cycling
Surface Quality	Smooth, uniform, defect-free
Operating Temperature	-40°C to +180°C

Application

This product is widely used in high-efficiency and high-reliability electrical equipment, including:

High-voltage and special-purpose motors

Dry-type transformers

Traction motors for rail transit systems

Wind power generators and renewable energy systems

Industrial motors in metallurgy, mining, and petrochemical industries

High-performance electromagnetic coils and electrical assemblies

FAQs

Q1: What advantages do these products offer compared to standard copper wires?

They provide superior electrical insulation, high thermal stability, excellent mechanical strength, strong resistance to moisture, radiation, and thermal shock, making them suitable for extreme and high-demand environments.

Q2: Can the products be customized according to specific requirements?

Yes. We offer customized solutions in terms of conductor size, insulation structure, temperature class, voltage level, and mechanical performance according to customer application needs.

Q3: What temperature ratings are available?

Depending on the insulation system, the products are generally suitable for Class F (155°C), Class H (180°C), and higher temperature environments, ensuring stable performance under continuous thermal stress.

Q4: What are the main applications of these products?

They are widely used in high-efficiency motors, generators, transformers, submersible motor systems, rail transit traction motors, wind power equipment, and industrial electrical systems requiring high reliability.

Q5: What types of products are included in this series?

This product range includes enameled copper flat wire, fiberglass insulated wires, film-wrapped copper wires, and high-performance composite insulated copper flat and round wires designed for demanding electrical applications.

Q6: What are the main advantages of hollow conductor products compared to solid wires?

Hollow conductors provide efficient internal cooling, improved thermal management, higher power density capability, and better stability in high-load continuous operation environments.

Q7: Can the size and structure be customized?

Yes. Outer diameter, inner diameter, wall thickness, conductor shape (round or flat), and insulation structure can all be customized according to customer technical requirements.

Q8: What are the main material options available?

The product range includes stainless steel hollow wire, oxygen-free copper hollow wire, and various insulated versions with composite structures such as polyimide F46 film, fiberglass, and polyester insulation systems.

Q9: What cooling media can be used inside the hollow conductors?

The products are compatible with common cooling media such as water, oil, and other industrial cooling fluids, depending on the system design and operating conditions.

Q10: What are these hollow conductor products mainly used for?

These hollow conductors are mainly used in high-power electrical systems requiring internal cooling, such as electric motors, generators, traction systems, and industrial equipment with water or oil cooling structures.