Insulating materials - Industrial, rigid, moulded, laminated tubes and rods of rectangular and hexagonal cross-section, based on thermosetting resins for electrical purposes - Part 2: Methods of test
绝缘材料 - 工业 刚性 成型 层压管和矩形和六边形横截面的杆 基于用于电气目的的热固性树脂 - 第2部分:测试方法
Deals with the test methods for industrial, rigid, moulded, laminated tubes and rods of rectangular and hexagonal cross-section, based on thermosetting resins for electrical purposes.
The test methods include the following:
a) Dimensions
- External dimensions
- Internal dimensions
- Wall thickness
- Departure from straightness - Applicable to all tubes and rods
b) Mechanical tests
- Flexural strength perpendicular to laminations (rods only)
- Axial compressive strength (tubes only)
c) Electrical tests
- General
- Insulation resistance after immersion in water
d) Other tests
- Water absorption
- Density