主要特性/General prpperties
Nominal diameter ,Max and min thickness and tolerance as below (mm)
序号 No. | 指标名称 Item | 单位 Unit | 指标值 Specified Value | 典型值 Typical Value ID 6~25mm
| |||||
内径6~25mm ID 6~25mm | 内径26mm以上 OD Over 26mm | ||||||||
1 | 密度 Density | g/cm3 | ≥1.40 | 1.45 | |||||
2 | 弯曲强度 Flexural Strength | MPa | ≥180 | 247 | |||||
3 | 压缩强度 (轴向) (axial direction) | MPa | ≥70 | 201 | |||||
4 | 剪切强度 Shear Strength | MPa | ≥15 | 20 | |||||
5 | 体积电阻率Surface Resistivity | 常态时 Normal | Ω·m | ≥1.0×1010 | 1.7×1012 | ||||
浸水24h后 After 24 Hours in Water | ≥1.0×108 | 2.3×109 | |||||||
6 | 平行层向绝缘电阻Parallel to layer Insulation Resistance | 常态时 Normal | Ω | ≥1.0×1010 | 2.4×1012 | ||||
浸水24h后 After 24 Hours in Water | ≥1.0×107 | 7.9×108 | |||||||
7 | 介质损耗因50Hz Dissipation Factor 50Hz | — | ≤0.030 | 0.009 | |||||
8 | 垂直层向耐电压 于90℃±2℃变变压器油中Vertical Breakdown Voltage in transformer oil in 90℃±2℃ | 壁厚 Thick ness | 1.5mm | kV | ≥7 | ≥12 | 12.5 | ||
2.0mm | ≥10 | ≥14 | 16.3 | ||||||
2.5mm | ≥13 | ≥16 | 18.2 | ||||||
3.0mm | ≥15 | ≥18 | 21.1 | ||||||
9 | 平行层向耐电压 于室温变压器油中 Paralle Breakdown Voltage in transformer oil in room temperature | kV | ≥25 | 30 | |||||
10 | 表面耐电压 受潮后于室温空气中1min Surface Breakdown Voltage in damp after 1 min | kV | ≥12 | 16 |