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Glass fiber enameled rectangular copper/aluminum winding wire is made by wrapping 1-2 layers of alkali-free glass fiber evenly on the copper (aluminum) conductor according to customer requirements, and then impregnated and baked with insulating paint with the required heat resistance index and compatibility, so that the glass fibers and the glass fibers and the conductor are bonded into a whole. The heat resistance index of glass fiber enameled rectangular copper/aluminum winding wire has three classes: 130, 155, and 180, and the insulation thickness generally has four levels: 20, 30, 40, and 50. This product is widely used in the windings of transformers, electromagnets, electric welders or other similar electrical equipment products.
Aluminum rectangular wire range | Copper rectangular wire range | ||
Narrow side a | Broad side b | Narrow side a | Broad side b |
1.00-6.30mm | 3.00-25.00mm | 0.80-5.60mm | 2.00-16.00mm |
Thermal class | 130, 155, 180 | ||
Resistivity of aluminum flat wire at 20℃ | ≤0.028010Ωmm2/m | ||
Resistivity of copper flat wire at 20℃ | ≤0.017241Ωmm2/m | ||
Standards | NB/T31048.-2014 | ||
Note | We can customize production according to user needs |
Product name | Insulation thickness(mm) | Deviation(%) |
Double glass fiber covered copper (aluminum) rectangular wire | 0.2 | -20% |
0.3 | ||
0.4 | ||
0.5 | ||
The glass fiber should be tightly and evenly wound on the conductor. The winding directions of the two layers of glass fiber of double glass fiber covered copper (aluminum) wire should be opposite. In addition, the insulation thickness of double glass fiber covered copper (aluminum) flat wire should comply with the requirements of the following table. The insulation thickness on the narrow side (B-b) is not evaluated. |
Breakdown voltage of glass fiber covered wire | ||
Insulation type | Minimum breakdown voltage /V | |
Bare copper/aluminum conductor + | Single glass fiber wrapped GL1 | 350 |
Double glass fiber wrapped GL2 | 560 | |
Characteristics of glass fiber covered wire The insulation layer of glass fiber covered wire has certain wear resistance, adhesion and softness, and has good resistance to thermal shock and overload. |
◆ Motor: Widely used in various motor windings, such as high-voltage motors, traction motors, explosion-proof motors, special motors, etc. Especially suitable for medium and high voltage AC motors, medium and large DC motors, medium and large wind turbines, etc.
◆ Transformer: Used for dry-type transformers, special transformers, etc.
◆ Reactor: Used for various reactor coils.
◆ Welding machine: Used for welding machine transformers and cables.
◆ Other special electrical equipment: such as electromagnets, electromagnetic coils, heaters, etc.