Epoxy fiberglass winding tube
Feb 4th, 2010 | By admin | Category: FRP Products“DD Fiberglass” – www.ddfiberglass.com
Epoxy fiberglass winding tube can be made into such heat-resistant grades as B, F or H grade, which have good electrical capability and mechanical strength.
Epoxy fiberglass winding tube is insulation product shaped through gluing alkali-free and twist-free glass fiber yarn, alkali-free glass cloth and epoxy Volan cloth soaking in epoxy resin compound glue, then being heated and solidified; According to users requirements, it can be made into such heat-resistant grades as B, F or H grade, which have good electrical capability and mechanical strength, and now is widely used in arrester sleeves and bushings of switches on the column for 35KV110KV220KV1000KV etc.
Winding tubes in various specifications (diameter ranges from φ19 to φ400 mm) can be produced in accordance with users requirements, meanwhile, they can be processed according to different requirements (notch, turning, wiring etc.).
Property:
| No | Parameter | Unit | Specified value | ||
| 1 | Density | g/cm3 | ≥2 | ||
| 2 | Water absorbtion rate | % | ≤0.10 | ||
| 3 | Bending strength(Circumference) | Mpa | ≥400 | ||
| 4 | Compression strength | Mpa | ≥110 | ||
| 5 | Withstand voltage along laminals at 90±2 | KV | ≥25 | ||
| 6 | Withstand voltage across 1aminals in transformer oil ,at 90±2,5 min wall thickness 4mm | KV/m | ≥22 | ||
| 7 | Dielectric 1oss factro 50Hz | ≤0.01 | |||
| 8 | Surface withstand voltage after wetting in normal air for 1 min with gap between | KV | ≥15 | ||
| 9 | Air tightness | Gas pipe | Mpa | 2.94 | No leak |
| Oil pipe | Mpa | 58.8 | |||
| 10 | Bending strength | Mpa | ≥210 | ||
| 11 | Shearing strength | Mpa | ≥25 | ||
| 12 | Lcakage currentbetween gap of 500mm at 40kv dc | μA | ≤10 | ||
| 13 | Contert of glass fiber | ≥70% | |||
| 14 | Insulation resistance | ΩM | 75×104 | ||
| 15 | Proof voltage | KV | ≥100 | ||
Source: Xi’an Gaoqiang Insulation Electrical