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Double Silk & Film Insulated Copper Wire 4*13.2 Application Transformer, Instrument, Electrical Equipment, Motor Shape Flat Wire Conductor Material Copper Wire Product Name Glass-Fiber Wound Wire Keywords Winding Wire Side a 0.9mm~6mm Typical Use High-Voltage Motors, Large Generators Mechanical Strength High Resistance to Abrasion, Vibration Geometry Rectangular Cross-Section Side B 2mm~16mm Size Customization Material T2/Tu2 OEM & ODM Custom Accept Transport Package Pallet or Customization Specification Double Silk & Film Insulated Copper Wire 4*13.2 Trademark SHENLONG Origin Jiangsu, China Production Capacity 10000t/Year GLASS-FIBER WOUND WIRE Glass-fiber wound wire (often called "silk-wrapped wire") is a high-performance magnet wire made by mechanically winding glass fibers around a bare copper or aluminum conductor to form the primary insulation.

The wound fibers are then impregnated with insulating varnish (such as silicone resin) and baked, creating a solid, integrated insulation layer with excellent mechanical strength.

Positioned between enameled wire and paper-covered wire, glass-fiber wound wire combines the outstanding heat resistance of glass fiber with the sealing and protective properties of insulating varnish, making it an essential material for modern high-reliability electrical equipment operating under high voltage, high temperature, and other demanding conditions.

MAIN CLASSIFICATIONS Based on the shape of the conductor and the insulation structure, glass-fiber wound wire is mainly divided into the following categories: BY CONDUCTOR SHAPE: Round Wire: The conductor has a circular cross-section, often used for small coils or lead wires.

Rectangular (Flat) Wire: The conductor has a rectangular cross-section. This is the most widely used type currently, as it allows for tight packing and efficient heat dissipation. BY INSULATION STRUCTURE: Single Wound Wire: A single layer of glass fiber is wound around the conductor.

Double Wound Wire: Two layers of glass fiber are wound, providing a higher voltage resistance rating.

Combined Insulated Wire: Insulating varnish film (enameled layer) is applied to the conductor first, then glass fiber is wound over it;or insulation film is wrapped first, followed by the glass fiber (i.e., "Glass-fiber and Film Wrapped Wire").

Specification Product Inspection Technical Requirements Shall Be In Accordance With The Customer'S Requirements. Pilot Projects Skills Requirement Test Results Conductor Size a±0.05 mm a +0.01 mm b±0.07 mm b +0.02 mm Insulation Thickness 0.40mm Qualified Conductor Surface The Color Is Basically Consistent.

Qualified Resistivity ≤0.017241 Ωmm²/m 0.016987Ωmm²/m Elongation >32 % 0.35 90° Bend Use A Smooth Element Rod Equal To Twice The Thickness Of The Product To Bend 90° Without New Cracks Qualified Breakdown Voltage >2500V 4400V4600V This. Product. Complies.

With GB/T 7672.1 KEY CHARACTERISTICS Glass-fiber wound wire is irreplaceable in heavy industry due to the following characteristics: EXCELLENT HEAT RESISTANCE: Glass fiber itself has superb heat resistance.

When combined with high-temperature varnish (e.g., silicone), the thermal class of the wire can typically reach Class 180 (H Class) or even higher, far exceeding that of ordinary enameled wire.

HIGH MECHANICAL STRENGTH: Glass fiber has high tensile strength, effectively protecting the conductor from damage during winding, embedding, and operational vibrations.

CORONA AND HIGH-VOLTAGE RESISTANCE: Compared to the insulating varnish film, the glass fiber layer is thicker and denser, enabling it to withstand higher voltage surges. It is especially suitable for high-voltage motors.

MOISTURE AND CHEMICAL STABILITY: After impregnation, the layer effectively isolates moisture and is resistant to oil, solvents, and chemical corrosion. Feature Category Key Characteristics Insulation System Composite:Inner Film (Polyester/Polyimide/Mica) + Outer Glass Fiber Braid.

Thermal Rating High (Usually 180°C To 220°C+), Suitable For Heavy-Duty Industrial Use. Mechanical Strength High Resistance To Abrasion, Vibration, And Cutting. Geometry Rectangular Cross-Section For High Slot Fill Efficiency.

Typical Use High-Voltage Motors, Large Generators, Traction Motors, And High-Power Transformers. MAIN APPLICATION AREAS Glass-fiber wound wire acts as the "blood vessel" for large-scale power equipment.

It is mainly used in applications with extremely high reliability requirements: Large Motors and Generators: Used as windings for stators and rotors, especially in traction motors (e.g., high-speed trains, subways).

Power Transformers: Used for transformer lead wires or specific windings to handle high-current transmission. Heavy Industrial Equipment: Electrical equipment used in harsh environments, such as mining machinery and rolling mill motors.

Aerospace: Used in aircraft generators, utilizing its lightweight and high-temperature resistance properties. Industry Sector Typical Equipment Core Function Energy&Power Generators, Power Plants Conversion: Converting Mechanical Energy To Electrical Energy Reliably.

Transportation Trains, Electric Vehicles Traction: Providing Power For Movement Under High-Stress Conditions. Heavy Industry Large Motors, Pumps Drive: Powering Heavy Machinery That Requires High Torque And Durability.

Infrastructure Transformers Transmission: Stepping Up Or Down Voltage For Efficient Power Distribution. MANUFACTURING PROCESS The production process of glass-fiber wound wire is roughly as follows: Unwinding: The bare copper wire (or flat wire) is fed from the payoff unit.

Winding: Using a rotating head, glass fiber is wound helically and tightly around the conductor. Varnish Impregnation: The wound wire passes through a varnish bath to impregnate the glass fiber with insulating resin.

Baking: The wire passes through a high-temperature oven to dry and cure the varnish, bonding the fibers together. Rewinding: The cooled wire is taken up onto reels. FA d the package before you pay the balance. Q2: What are the terms of packing?

A: Generally, we pack our goods in bundles or coils with rods or belts;we could also pack the goods according to the customers' requirements. Q3: Could you produce according to the samples? A: Yes, we can make customer-made products from your samples