IEC 60684-3的本部分给出了四种热收缩、阻燃、有限火灾危险套管的要求，其耐热性额定值为105°C，如下所示。 A类:薄壁收缩比2:1内径至102,0 mm B类:中壁收缩比2:1内径至60,0 mm C类:厚壁收缩比2:1内径至51,0 mm D类:中壁收缩比3:1内径至40,0 mm 这些袖子通常有以下颜色:黑色、红色、绿色、蓝色、白色、黄色和绿色/黄色。 除本文件中列出的尺寸或颜色外，其他尺寸或颜色可作为定制项目提供。如果这些项目符合表5、6、7和8中列出的性能要求（不包括尺寸和质量），则视为符合本文件的要求。 符合本规范的材料符合既定的性能水平。 然而，用户为特定应用选择材料将基于该应用中充分性能所需的实际要求，而不仅仅基于本规范。交叉引用:IEC 60684-1:2003ISO 1817:2015EN 60684-2:2011ISO 846:2019EN ISO 846:2019IEC 60757:1983HD 457 S1:1985IEC 60684-2:2011EN 60684-1（IEC 60684-1:2003）ASIEC 60684-3（系列）EN 60684-3-420至422（系列）IEC 60684-3（所有表格）购买本文件时可提供的所有当前修订内容均包含在购买本文件中。

This part of IEC 60684-3 gives the requirements for four types of heat-shrinkable, flame-retarded, limited-fire-hazard sleeving with a thermal endurance rating of 105 °C as shown below. Class A: thin wall shrink ratio 2:1 internal diameter up to 102,0 mmClass B: medium wall shrink ratio 2:1 internal diameter up to 60,0 mmClass C: thick wall shrink ratio 2:1 internal diameter up to 51,0 mmClass D: medium wall shrink ratio 3:1 internal diameter up to 40,0 mm These sleevings are normally supplied in the following colours: black, red, green, blue, white, yellow and green/yellow. Sizes or colours other than those listed in this document are available as custom items. These items are considered to comply with this document if they comply with the property requirements listed in Tables 5, 6, 7 and 8, excluding dimensions and mass. 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.Cross References:IEC 60684-1:2003ISO 1817:2015EN 60684-2:2011ISO 846:2019EN ISO 846:2019IEC 60757:1983HD 457 S1:1985IEC 60684-2:2011EN 60684-1 (IEC 60684-1:2003) ASIEC 60684-3 (series)EN 60684-3-420 to 422 (series)IEC 60684-3 (all sheets)All current amendments available at time of purchase are included with the purchase of this document.