IEC 60667-3-1:20 20给出了电气用硫化纤维板的要求。通过与粘合剂结合几种厚度的硫化纤维制成的材料不在本文件中。符合本规范的材料符合既定的性能水平。然而，用户对特定应用的材料的选择是基于该应用中足够性能所必需的实际要求，而不是仅基于本说明书。安全警告:本文件中包含或提及的方法的用户有责任确保以安全的方式使用它们。这第二版取消并取代了1986年出版的第一版。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更:改为表1中的厚度偏差范围； 添加表1中的表观密度； 变更为表1中抗拉强度的厚度范围； 在表1中添加柔韧性和收缩率； 更改表1中内层附着力的测试方法和属性值。

IEC 60667-3-1: 2020 gives requirements for vulcanized fibre sheets for electrical purposes. Materials made by combining with an adhesive several thicknesses of vulcanized fibre are not covered by this document. Materials that conform to this specification meet established levels of performance. However, the selection of a material by a user for a specific application is based on the actual requirements necessary for adequate performance in that application and not based on this specification alone. Safety warning: it is the responsibility of the user of the methods contained or referred to in this document to ensure that they are used in a safe manner. This second edition cancels and replaces the first edition published in 1986. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:

1. change to the range of thickness deviation in Table 1;
2. addition of apparent density in Table 1;
3. change to the range of thickness for tensile strength in Table 1;
4. addition of flexibility and shrinkage in Table 1;
5. change test method and property value of internal ply adhesion on Table 1.