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NOMEX paper covered wire

Product description:
NOMEX paper-covered wire is a wire made of oxygen-free copper rods or electrical round aluminum rods extruded by a certain specification die, and then wrapped with T410-type NOMEX insulating paper produced by DuPont. It is mainly used for transformers. Winding of electric welding machine, electromagnet or other similar electrical equipment products. The bare copper (aluminum) wire produced by the extrusion process is the most ideal material for the production of NOMEX paper covered wire.
Executive standard:GB/T7673.3-2008 and corporate standards

Production range:
Aluminum flat wire
Narrow side size a: 1.00mm-8.00mm
Wide side size b: 3.00mm-25.00mm
Copper flat wire
Narrow side size a: 0.90mm—5.60mm
Wide side size b: 2.00mm-16.00mm
Copper aluminum round wire
Diameter size: φ1.7—φ8.0
If the selected specification exceeds the above range, please contact us

Material:
The aluminum flat wire should meet the requirements of GB5584.3-2009, and the resistivity at 20°C should not be greater than 0.0280Ωmm2/m
The rectangular copper wire should meet the requirements of GB5584.2-2009, and the resistivity at 20°C should not be greater than 0.017241Ωmm2/m

NOMEX Paper Covered Wire Technical Index (Enterprise Standard)

NOMEX paper adopts the 2mil-thickness T410 NOMEX paper produced by DuPont

Product name	Wrapping method	Number of wrapping layers	Insulation thickness/mm	Breakdown voltage≥
NOMEX paper covered wire	Self-locking overlap 1.5~2mm	1	0.12±0.03	600V
	Self-locking overlap 1.5~2mm	2	0.24±0.03	1500V
	50% stack	1	0.22±0.03	1200V
	50% stack	2	0.40±0.03	3000V
	Overlap 1.5mm wrapping in opposite direction	3	0.33±0.03	2500V

Advantages of NOMEX paper covered wire
Because NOMEX paper has extremely high electrical, chemical and mechanical integrity, elasticity, flexibility, tear resistance, moisture resistance and abrasion resistance, it is also very resistant to acid and alkali corrosion, and will not be affected by insects, molds and fungi. Damaged, it can be compatible with all kinds of varnishes, adhesives, transformer liquids, lubricants, and refrigerants. In addition, NOMEX paper has a high heat resistance temperature. Even if the temperature is as high as 220 ℃, it still maintains the original insulation performance. Use NOMEX paper packs Line transformers can bring many economic, environmental and safety benefits to customers.
Reduce costs, reduce size, and reduce weight
Transformers insulated with NOMEX products can be designed to have a temperature rise of 180°C, requiring fewer wires and iron cores, which can reduce the size and weight, thereby reducing infrastructure costs and ease of installation. Small iron core also means no-load loss small;

Improve reliability
The transformer winding uses NOMEX paper-covered wire, which maintains excellent electrical and mechanical properties during the entire service life of the transformer. NOMEX paper is resistant to shrinkage and compression, has good elasticity and is not suitable for aging, and has good thermal shock resistance, so it can ensure the transformer coil structure It is compact and will not produce cracks. In addition, NOMEX insulation paper is not sensitive to temperature and dust, which improves the reliability of the transformer.

Increase reserve capacity
NOMEX paper has high heat resistance temperature, even when the temperature is as high as 220 ℃, it still maintains the original insulation performance. When the transformer is designed, the C-class 220°C insulation material is used as the H-class 180°C, which can cope with emergency overload loads and unexpected expansion, which can greatly reduce the backup plan.

Good environmental performance
NOMEX insulation material has stable chemical properties, is safe and flame-retardant, non-toxic, and anti-radiation. Even if a fire occurs, it will not release toxic gases; it does not react with solvents and is resistant to acid and alkali corrosion. When its service life is over, it is easy to recycle, resources can be reused, waste is degradable, and will not pollute the environment. It is an environmentally friendly high-tech product.

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