product description
Description of Epoxy Fiberglass Filament Winding Tube
Epoxy fiberglass filament winding tube is tube-like laminated products, which is made of fiberglass yarn impregnated with insulating jelly with different resin ratios like epoxy resin, and then rolled, baked and cured under heat and hot pressing with good dielectric property and mechanical property, and higher thermal resistance property. The insulation class is H class.
Application of Epoxy Fiberglass Filament Winding Tube
It is widely used as the main insulator of H-class dry-type transformer, on-load tap changers, reactors, surge arresters, SF6 instrument transformer and other products.
Epoxy fiberglass filament winding tube, produced by using fiberglass yarn as raw material, insulating jelly with different resin ratios like epoxy resin as additive, can be mass-produced with advanced production equipment and automatic production line. This product has the advantages of reliable quality, smooth appearance, uniform color, neat cutting ends and small thickness tolerance with strict manufacturing technology. Meanwhile, ZTelec Group is equipped with advanced ventilation facilities and dust-removing equipment to keep the products dry and clean. The mechanical and electrical properties of products are superior to the similar one of other companies. Its quality is recognized by domestic and foreign large enterprises such as Lens Technology in China and Schneider Electric and sold overseas such as European and American areas.
Property Parameter of Epoxy Fiberglass Filament Winding Tube
Executive Standard：GB-T 23100-2008 IEC61212-2006
| Number | Item | Unit | Value |
| 1 | Density | g/cm3 | 1.85-2.0 |
| 2 |
Flexural Strength at Perpendicular Lamination （Under Normal） |
MPa | 400 |
| 3 | Axial Compressive Strength | MPa | ≥150 |
| 4 |
Breakdown Voltage at Parallel Lamination （Transformer Oil at 90℃） |
Kv | ≥40 |
| 5 |
Dielectric Strength at Perpendicular Lamination （Transformer Oil at 90℃, 1mm） |
KV/mm | ≥11.6 |
| 6 | Surface Voltage Resistance after Damp | kv | ≥12 |
| 7 | Insulation Resistance after Immersion | Ω | 1.0×103 |
| 8 | Dielectric Loss Factor（50Hz） | - | ≤0.05 |
| 9 | Water Absorption | % | ≤1 |
| 10 | Partial Discharge | PC | ≤5 |
| 11 | Thermal Index | - | 180 |
Product Specification of Epoxy Fiberglass Filament Winding Tube
| Name | Unit | Value |
| Minimum Wall Thickness | mm | 3 |
| Minimum Bore Size | mm | 30 |
| Maximum Bore Size | mm | 600 |
| Length | mm | 1000-3000 |
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