Polyester Glass-Fibre Wound Varnish Enamelled Rectangular Copper Wire
Introduction
Glass-fiber wrapped enameled flat copper wire is first enameled on high-quality copper conductors, and then wrapped with glass fiber. According to customer needs, the required temperature resistance index of the insulating paint is matched, and the baking treatment is performed to make the glass fiber, insulating paint and conductor bonded into a whole.
The fibre covering shall consist of a combination of polyester and glass fibres. The glass fibres shall be electrical-grade continuous-filament glass yarn. The polyster fibre shall be a high-grade yarn resulting from the linear polymerization of ethylene glycol and terephthalic acid. the maximum content by weight of polyester fibre in the yarn shall not exceed 50%.
The coating shall be characterized by the following different grades of thickness:
PG1, bare conductor with 1 layer of polyester glass fibre or 2 layers of finer polyester glass fibres that together, comply with the dimension.
PG2, bare conductor with 2 layers of polyester glass fibre.
grade 1 PG1, enamelled grade 1 (grade 1) with 1 layer of polyester glass fibre (PG1).
grade 1 PG2, enamelled grade 1 (grade 1) with 2 layers of polyester glass fibre (PG2).
grade 2 PG1, enamelled grade2 (grade 2)with a layer of polyester glass fibre (PG1).
grade 2 PG2, enamelled grade 2 (grade 2)with 2 layers of polyester glass fibre (PG2).
Tolerance On Conductor Dimensions
The tolerance on conductor dimensions for Polyester Glass-Fibre Wound Varnish Enamelled Rectangular Copper Wire can vary depending on the specific manufacturing standards and requirements.
Conductor Tolerances
| Nominal width or thickness of the conductor
mm |
Tolerance
mm |
|
| over | up to and including | |
| – | 3.15 | ±0.030 |
| 3.15 | 6.30 | ±0.050 |
| 6.30 | 12.50 | ±0.070 |
| 12.50 | 16.00 | ±0.100 |
Increase In Dimensions Due To The Insulation
| nominal width of the conductor mm | increase in dimensions mm | ||||||||||||||||||
| Polyester-glass fiber covering over bare conductor | polyester-glass fiber covering over grade 1 enamelled wire | polyester-glass fiber covering over grade 2 enamelled wire | |||||||||||||||||
| Single covering (PG1) | double covering (PG2) | single covering (grade 1 PG1) | double covering(grade 1 PG2) | single covering(grade 2 PG1) | double covering (grade 2 PG2) | ||||||||||||||
| over | Up to and incl. | Min. | Nom. | Max. | Min. | Nom. | Max. | Min. | Nom. | Max. | Min. | Nom. | Max. | Min. | Nom. | Max. | Min. | Nom. | Max. |
| – | 3.15 | 0.08 | 0.12 | 0.16 | 0.19 | 0.25 | 0.31 | 0.14 | 0.21 | 0.27 | 0.25 | 0.34 | 0.42 | 0.20 | 0.27 | 0.33 | 0.31 | 0.40 | 0.48 |
| 3.15 | 6.30 | 0.10 | 0.14 | 0.18 | 0.21 | 0.28 | 0.35 | 0.16 | 0.23 | 0.29 | 0.27 | 0.37 | 0.46 | 0.22 | 0.29 | 0.35 | 0.33 | 0.43 | 0.52 |
| 6.30 | 12.50 | 0.11 | 0.16 | 0.21 | 0.22 | 0.30 | 0.38 | 0.17 | 0.25 | 0.32 | 0.28 | 0.39 | 0.49 | 0.23 | 0.31 | 0.38 | 0.34 | 0.45 | 0.55 |
| 12.50 | 16.00 | 0.12 | 0.18 | 0.24 | 0.24 | 0.32 | 0.40 | 0.18 | 0.27 | 0.35 | 0.30 | 0.41 | 0.51 | 0.24 | 0.33 | 0.41 | 0.36 | 0.47 | 0.57 |
Feature:
Excellent electrical insulation performance: effectively prevents current leakage and arcing, and provides reliable electrical insulation.
High mechanical strength: The wire is wrapped with glass filaments, which gives it high mechanical strength and durability.
High temperature resistance: Polyester glass filament wrapped enameled flat copper wire has been specially treated to have a high temperature index and can work stably in high temperature environments.
Good chemical resistance: because of its good corrosion resistance to some chemicals and solvents and can be used in some harsh chemical environments.
Fields Are Most Widely Used:
Motor manufacturing: provides good electrical insulation and mechanical strength, and is suitable for high speed, high temperature and high voltage environments.
Transformer manufacturing: withstands high voltage and high temperature in transformers while providing excellent electrical insulation performance to ensure efficient operation and safety performance of transformers.
Inductor manufacturing: provides stable electrical performance and good high-temperature resistance, ensuring the stable operation of inductors in various circuit applications.
Automotive electronics: due to its excellent electrical properties, mechanical strength and high temperature resistance. It can be used for this type of filed.
The uniqueness of polyester enameled wire lies in its excellent temperature resistance, good insulation performance, chemical resistance, flexibility and lightweight design.