IEC 60794-1-217:2024系列定义了测试程序，以测量由于电缆热暴露而导致的与电缆元件和电缆护套相比的永久性光纤突出。本文件部分取代IEC 60794？1？22:2017.本版构成技术修订版。本版本包括以下与IEC 60794相关的重大技术变化？1？22:2017: a)在目标中增加了说明，该测试程序的目的是测量无刚性强度构件的电缆的永久纤维突出； b)如IEC 60794-1-211中所述，用对温度室和温度感测装置的详细描述代替了对设备的方法F1的引用； c)在设备子条款中增加了测量装置； d)如IEC 60794中所述，在切割电缆样品之前增加了调节-1-211 e)增加了温度循环子条款中所有要求的步骤以及最小浸泡时间表和循环程序图，并删除了对IEC 60794-1-22方法F1的引用； f)改进了图，增加了电缆样品制备图； g)增加了建议用于具有刚性强度构件的电缆的测试程序的信息性附录A。

IEC 60794-1-217:2024 series defines the test procedure to measure the permanent fibre protrusion compared to the cable elements and cable sheath due to thermal exposure of a cable. This document partially replaces IEC 60794？1？22:2017. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to IEC 60794？1？22:2017:
a) added clarification in the objective that the purpose of this test procedure is to measure the permanent fibre protrusion of cables without rigid strength members;
b) replaced the reference to method F1 for the apparatus with a detailed description for the temperature chamber and temperature sensing device as done in IEC 60794-1-211;
c) added a measuring device in the subclause for apparatus;
d) added conditioning before cutting the cable sample as done in IEC 60794-1-211
e) added all required steps in the subclause for temperature cycling as well as the table for the minimum soak time and the figure for the cycle procedure, and removed the reference to IEC 60794-1-22, method F1;
f) improved the figures and added a figure for preparation of the cable sample;
g) added the informative Annex A for the test procedure recommended for cables with rigid strength members.