BS EN 4708-101:2017规定了四种热收缩材料所需的特性 工作温度在-55°C和-55°C之间的飞机电气系统用聚烯烃套管 135°C。A型:非常灵活，阻燃，收缩比为2:1。该套管具有非常好的灵活性，阻燃，在低温下会收缩。 它适用于敏感元件和精密布线需要保护的地方，防止过度接触 收缩时加热。B型:柔性、阻燃、收缩比为2:1、3:1和4:1。该套管具有柔性和阻燃性。它适用于一般用途，并且可用 具有高收缩率。C型:柔性、非阻燃、收缩比为2:1和3:1。该套管是柔性、非阻燃的，有两种收缩比。D型:半刚性、阻燃、收缩比为2:1。该套管为半刚性、阻燃型。它适用于应变消除和 需要机械支撑这些套管通常内径高达102 mm，收缩比为2:1 收缩比为3:1时为4:1，最大为39 mm，B型为以下颜色，黑色、棕色， 红色、黄色、绿色、蓝色、橙色、紫色、灰色、白色和绿色/黄色。A型和D型仅为黑色。C型是透明的，不阻燃，不符合 EN 4708-001。除本标准中特别列出的尺寸或颜色外，还可以提供其他尺寸或颜色。这些项目应 如果符合本标准中列出的财产要求，则视为符合本标准 表5、6和7，尺寸和质量除外。交叉引用:EN 3909EN 4708-001IEC 60684-1:2011IEC 60684-2:2005IEC 60757:1983ISO 846:1997ISO 1817:2005ISO 11075:2007ISO 11078:2007MIL-PRF-87937AMS 1428:2013ASTM D740购买本文件时提供的所有当前修改件均包括在内。

BS EN 4708-101:2017 specifies the required characteristics for four types of heat-shrinkable polyolefin sleevings for use in aircraft electrical systems at operating temperatures between - 55 °C and 135 °C.Type A: Very flexible, flame retarded, shrink ratio 2:1This sleeving has very good flexibility, is flame retarded and will shrink at low temperatures. It is suitable where sensitive components and delicate wiring need protection from excessive heat during shrinking.Type B: Flexible, flame retarded, shrink ratio 2:1, 3:1 and 4:1This sleeving is flexible and flame retarded. It is suitable for general purposes and is available with high shrink ratios.Type C: Flexible, not flame retarded, shrink ratio 2:1 and 3:1This sleeving is flexible and not flame retarded and is available in two shrink ratios.Type D: Semi-rigid, flame retarded, shrink ratio 2:1This sleeving is semi-rigid and flame retarded. It is suitable where strain relief and mechanical support are requiredThese sleevings are normally supplied with internal diameters up to 102 mm for shrink ratios of 2:1 and 4:1 and up to 39 mm for shrink ratios of 3:1 and in the following colours for type B, black, brown, red, yellow, green, blue, orange, violet, grey, white and green/yellow. Types A and D are black only.Type C is transparent, is not flame retarded and does not meet the flammability requirements of EN 4708-001.Sizes or colours other than those specifically listed in this standard may be available. These items shall be considered to comply with this standard if they comply with the property requirements listed in Tables 5, 6 and 7 except for dimensions and mass.Cross References:EN 3909EN 4708-001IEC 60684-1:2011IEC 60684-2:2005IEC 60757:1983ISO 846:1997ISO 1817:2005ISO 11075:2007ISO 11078:2007MIL-PRF-87937AMS 1428:2013ASTM D740All current amendments available at time of purchase are included with the purchase of this document.