标准摘要
[中文适用范围]： 本部分IEC 60684规定了两种半导电性热缩聚烯烃套管的技术要求，其名义收缩比为3:1。该套管适用于最高100°C的温度环境： - A型：薄壁，标称内径最大至195.0毫米； - B型：中壁，标称内径最大至120.0毫米。 该套管通常以黑色供应。由于此类套管的尺寸和壁厚范围较广，本标准附录A提供了可用规格范围的指导。实际规格应由用户与供应商协商确定。符合本规范的材料均能达到既定的性能水平。然而，用户针对特定应用选择材料时，应基于该应用所需的具体性能要求，而非仅依据本规范。 该套管专用于中压电缆附件，其电气性能将作为组装过程的一部分予以验证。相关示例可见于HD 629及IEC 60502（所有部分）。 [外文原描述]： IEC 60684-3-281:2025 gives the requirements for two types of heat-shrinkable, polyolefin sleeving, semiconductive, with a nominal shrink ratio of 3:1. This sleeving has been found suitable for use up to temperatures of 100 °C. -Type A: Thin wall - Internal diameter up to 195,0 mm typically -Type B: Medium wall - Internal diameter up to 120,0 mm typically This sleeving is normally supplied in the colour black. Since these types of sleevings cover a significantly large range of sizes and wall thicknesses, Annex A provides guidance on the range of sizes available. The actual size will be agreed between the user and the supplier. Materials which conform to this specification meet established levels of performance. However, the selection of a material by a user for a specific application will be based on the actual requirements necessary for adequate performance in that application and not based on this specification alone. This sleeving is designed to be used in MV cable accessories and as such electrical performance will be proven as part of the assembly. Examples of this are described in HD 629 and IEC 60502 (all parts). This second edition cancels and replaces the first edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) change in volume resistivity requirement to a maximum; b) change in method to measure resistivity.
英文名称Flexible insulating sleeving - Part 3: Specifications for individual types of sleeving - Sheet 281: Heat-shrinkable, polyolefin sleeving, semiconductive