Main Technical Parameters of Epoxy Resin Reinforced Glass Fiber Tube No. Parameter Unit Speeified Value 1 Density g/cm3 ≥1.92 2 Bending strength MPa ≥320 3 Compression strength MPa ≥200 4 Shearing strength MPa ≥32 5 Dielectrlc loss factor (50HZ)   ≥0.02 6 Dielectric Constant   3-6 7 Volume resistivity　At normal conditions After immersion in water Ωm ≥1.0×1011 ≥1.0×109 8 Insulation resistance along laminas At normal conditions After immersion in water Ω ≥1.0×1011 ≥1.0×109 9 Surface withstand voltage after wetting in normal air for 1min with gap between electrodes of 30mm KV 14 10 Withstand voltage across laminas in 8≤3mm Transformer oil, at 90 ±2℃,5min 8>3mm KV 18 20 11 Withstand voltage along laminas in Transformer oil, at 90±2℃,5min,between gap of 25mm KV ≥25 ≥50 ≥75 12 Insulation resistance Ωm ≥5×104 13 Power Frequency withstanding voltage(in Transformer oil, 5min,between gap of 100mm,5min）The gap (on customer's order) KV ≥85