绝缘软套管第3部分:各种类型套管规范活页283:母线绝缘用热收缩聚烯烃套管

[中文适用范围]： 本部分 IEC 60684 规定了两种用于母线绝缘的热收缩聚烯烃套管的要求，标称收缩比为2.5:1。这些套管在温度高达100°C时适用。 - A型：中等壁厚 - 内径通常可达170.0毫米 - B型：厚壁 - 内径通常可达165.0毫米 这些套管通常以红色或棕色供应。由于这些类型的套管覆盖了相当大范围的尺寸和壁厚，附录A（表A.1和A.2）提供了可用尺寸范围的指导。实际尺寸和壁厚将由用户和供应商根据所提供安装管的电气强度和用户要求协商确定。符合本规范的材料满足既定的性能水平。然而，用户为特定应用选择材料时，应基于该应用所需的实际性能要求，而不仅仅是基于本规范。 [外文原描述]： IEC 60684-3-283:2019 RLV contains both the official IEC International Standard and its Redline version. The Redline version 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 60684-3-283:2019 gives the requirements for two types of heat-shrinkable, polyolefin sleeving for bus-bar insulation, with a nominal shrink ratio of 2,5:1. This sleeving has been found suitable up to temperatures of 100 °C. Type A: Medium wall - internal diameter up to 170,0 mm typically Type B: Thick wall - internal diameter up to 165,0 mm typically These sleevings are normally supplied in colour, red or brown. Since these types of sleeving cover a significantly large range of sizes and wall thicknesses, Annex A (Tables A.1 and A.2) provides guidance to the range of sizes available. The actual size and wall thickness will be agreed between the user and supplier depending on the electric strength of the installed tubing offered and the requirements of the user. 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 2010 and Amendment 1:2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - change of moulded plaque thickness for resistance to tracking and weathering tests to (6 ± 0,5) mm. Keywords: Heat-shrinkable, polyolefin sleeving for bus-bar insulation