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High Temperature Fiberglass Insulated Hollow Copper Flat Wire – Industrial Grade Conductors

The product is made of a composite insulation layer formed by polyester fiber and glass fiber, providing a strong and integrated structure with a high surface finish and excellent bending performance. The insulation layer shows no separation after stretching. After a 200°C aging test for 6 hours, both the insulation and electrical performance show no degradation. The uniform structural geometry ensures stable internal water or oil cooling flow, and the product offers excellent mechanical strength and sealing performance.

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Technical Specifications

Technical Specifications
Item	Specification
Product Type	Composite Insulated Hollow Copper Wire
Insulation Structure	Polyester fiber + glass fiber composite insulation
Conductor Material	Oxygen-free copper (≥99.95%)
Shape	Flat / Round (optional)
Outer Diameter	2.0 – 20.0 mm (typical range)
Inner Diameter	0.5 – 15.0 mm (typical range)
Wall Thickness	Uniform, standard manufacturing tolerance
Operating Temperature	-40°C to +200°C
Heat Resistance	Good
Cold Resistance	Good
Aging Resistance	Stable performance after standard thermal aging test
Bending Performance	Good flexibility and durability
Tensile Strength	≥ 150 N/mm² (typical industry level)
Insulation Performance	Reliable electrical insulation
Cooling Medium	Water / Oil compatible
Flow Performance	Uniform internal cooling flow
Surface Quality	Smooth, clean surface finish
Standards	IEC / ISO / Customer specification

Application

This product is designed for high-reliability electrical and thermal management applications requiring stable insulation performance and efficient cooling flow. It is widely used in:

Water-cooled and oil-cooled high-power electric motors

Generator winding systems with thermal management requirements

Hollow conductor systems for industrial cooling applications

High-efficiency electrical equipment operating under continuous load

Motor winding systems used in industrial and energy sectors

Electrical systems requiring high mechanical stability and insulation reliability

FAQs

Q1: 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.

Q2: 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.

Q3: 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.

Q4: 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.

Q5: 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.