1.Introduction: Fiberglass Covered Winding Wire is the premium copper or aluminum wire to be wrapped with polyester film or polyimide film, then to be wrapped with single or double fiberglass. It should be impregnated incompatible insulating coatings of required thermal class，baked to make a whole between fiberglass, film and conductor. The product has high breakdown voltage and thermal classes of 130, 155, 180, 200. It is widely applied in reactors, transformers, electrical machines and other similar electrical instruments.
3.Production Range:
Copper or Aluminum Rectangular Wire
Narrow size a: 0.30-5.60mm
Wide size b: 2.00-16.00mm
Copper or Aluminum Round Wire
Diameter: Φ1.7-Φ6.0mm
4.Material:
Aluminum rectangular wire should conform to GB5584.3-2009, the resistivity (20℃) is no more than 0.0280Ωmm²/m. Copper rectangular wire should conform to GB5584.2-2009, the resistivity (20℃) is no more than 0.01724Ωmm²/m. Insulation thickness and breakdown voltage are as follows,
| Name | Insulation Thickness/mm | Deviation | Minimum Breakdown Voltage/V |
| Fiberglass Film Wrapped Wire | 0.20 | ±15% | 2500 |
| 0.30 | -15% | ||
| 0.40 | 5000 | ||
| 0.50 | |||
| 0.60 | |||
| 0.70 | 6000 | ||
| 0.80 | |||
| 0.90 |
Fiberglass film wrapped wire is bended on broad side and narrow side with the following rods.
| Bending | Rod Diameter | |
| Broad Side | ≤8.00 | 10*Broad Side Size |
| Broad Side | ＞8.00 | 15*Broad Side Size |
| Narrow Side | All specifications | 10*Narrow Side Size |