Nanjing Judian New Materials Co., Ltd.
(Maanshan Judian Copper Industry Co., Ltd.)
Sales Hotline: +86-13675120088
Service Hotline: +86-13801591289
Nanjing Judian New Materials Co., Ltd.
(Maanshan Judian Copper Industry Co., Ltd.)
Sales Hotline: +86-13675120088
Service Hotline: +86-13801591289
PRODUCTS
Judian New Materials
Paper covered wire
Product description:
Paper-covered wire is a wire made of oxygen-free copper rods or electrical round aluminum rods that are annealed after being extruded or drawn by a certain specification die, and then wrapped with two or more layers of insulating paper on the copper (aluminum) conductor (including Telephone paper, cable paper, high-voltage cable paper, turn-to-turn insulation paper, etc.) are suitable for winding wires of oil-immersed transformer coils and other similar electrical appliances. The bare copper (aluminum) wire produced by the extrusion process is an ideal material for the production of paper-covered cables.
Executive standard:GB/T7673-2008
Production range:Copper flat wire
Narrow side size a: 0.90mm—5.60mm
Wide side size b: 2.00mm-16.00mm
Aluminum flat wire
Narrow side size: a: 1.00mm—8.00mm
Wide side size: b: 3.00mm—25.00mm
Copper aluminum round wire
Nominal diameter of conductor: φ1.7—φ8.0
If the 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
The insulation thickness of the paper-covered round (flat) cable shall meet the following requirements or be negotiated by the supplier and the buyer:
Cable paper-covered round wire unit: m
Related technical parameters of paper covered wire:
| Model | Name | Model | Name |
| Z | Cable paper or telephone paper covered copper wire | ZB | Cable paper or telephone paper covered copper flat wire |
| ZL | Cable paper or telephone paper covered aluminum flat wire | ZLB | Cable paper or telephone paper covered aluminum flat wire |
| ZA | 500KV transformer turn-to-turn insulated copper round wire | ZAB | 500KV transformer turn-to-turn insulation paper-coated copper rectangular wire |
| ZAL | 500KV transformer turn-to-turn insulated copper flat wire | ZALB | 500KV transformer turn-to-turn insulation paper-coated aluminum flat wire |
| Insulation thickness of paper-covered round wire | |||||
| Nominal insulation thickness (mm) | 0.30 | 0.45 | 0.80 | 1.20 | 1.80 |
| Allowable deviation (mm) | ±0.05 | ±0.05 | ±0.10 | ±0.12 | ±0.15 |
| Insulation thickness of paper-covered rectangular wire | ||||||||
| Nominal insulation thickness (mm) | 0.45 | 0.60 | 0.95 | 1.35 | 1.60 | 1.95 | 2.45 | 2.95 |
| Maximum insulation thickness (A—a) | 0.57 | 0.74 | 1.14 | 1.56 | 1.84 | 2.23 | 2.77 | 3.32 |
| Minimum insulation thickness (A—a) | 0.40 | 0.53 | 0.85 | 1.20 | 1.45 | 1.80 | 2.30 | 2.75 |
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