IEC 60684-3-247:2019 RLV包含IEC官方国际标准及其红线版本。Redline版本不是官方文档，它只有英文版本，为您提供了一种快速简单的方法来比较IEC官方标准与其以前版本之间的所有变化。 IEC 60684-3-247:2019给出了两种类型的热收缩聚烯烃套管的要求，双壁，非阻燃，标称收缩比为3:1。已经发现该套管适合在高达100℃的温度下使用。 -A型:中等壁，内径通常高达200.0 mm。 -B型:厚壁，内径通常高达200.0 mm。 这些套管通常是黑色的。由于这些类型的套管覆盖了相当大的尺寸和壁厚范围，附录A（表A。1和A.2）提供了可用尺寸范围的指南。实际尺寸将由用户和供应商商定。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将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。第二版取消并取代了2011年发布的第一版和修正案1:20 16。本版构成技术修订版。与之前的版本相比，此版本包括以下重大技术变更: -去除耐光色牢度测试，因为这被炭黑含量测试所覆盖； -低温柔韧性试验变更为-20℃以与片材214对齐； -将剥离强度样品的最终调节温度改变至200℃，以与条款5中的温度一致； -删除真菌耐药性测试，因为没有证据表明真菌生长是测试或使用中的问题。 关键词:热缩聚烯烃套管双壁不阻燃厚中壁

IEC 60684-3-247:2019 RLV contains both the official IEC International Standard and its Redline version. The Redline version is not an official document, it is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition.

IEC 60684-3-247:2019 gives the requirements for two types of heat-shrinkable, polyolefin sleeving, dual wall, not flame retarded with a nominal shrink ratio of 3:1. This sleeving has been found suitable for use at temperatures of up to 100 °C.
- Type A: Medium wall, internal diameter up to 200,0 mm typically.
- Type B: Thick wall, internal diameter up to 200,0 mm typically.
These sleevings are normally supplied in colour black. Since these types of sleving cover a significantly large range of sizes and wall thicknesses, Annex A (Tables A.1 and A.2) provides a guide to the range of sizes available. The actual size will be agreed between the user and 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 second edition cancels and replaces the first edition published in 2011 and Amendment 1:2016. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous editions:
- removal of the colour fastness to light test, as this is covered by the test for carbon black content;
- change of low temperature flexibility test to -20 °C to align with sheet 214;
- change of final conditioning temperature of peel strength samples to 200 oC to align with the temperature in Clause 5;
- removal of the fungus resistance test as there is no evidence that fungus growth is an issue either by testing or in use.
Keywords: Heat-shrinkable, polyolefin sleeving, dual wall, not flame retarded, thick and medium wall