IEC 61300-2-7:20 13详述了用于确定光纤设备是否适合承受在实际使用、储存和/或运输中可能发生的弯矩的环境条件的程序。该测试主要是为了观察弯矩的影响。弯矩可能导致破坏功能效用的效应，导致物理强度的损失，并导致其他重要机械性能的变化。也可能发生光学性质的劣化。样本可以是用于光纤使用的部件、连接器组、接头或其他装置组合。这第二版取消并取代了1995年出版的第一版。它构成技术修订。与上一版相比，此版本包括以下重大技术变更:-全面重新审议整个文件，包括补充规范性参考资料； -被测器械（DUT）的澄清； -阐明严重性、性能类别和DUT之间的关系。 关键词:光纤器件承受弯矩环境条件的适用性

IEC 61300-2-7:2013 details a procedure for determining the suitability of a fibre optic device to withstand the environmental condition of a bending moment which may occur in actual use, storage and/or transport. The test is primarily intended to permit the observation of effects of a bending moment. The bending moment may result in effects that would destroy functional utility, cause loss of physical strength, and cause changes in other important mechanical properties. Degradation of optical properties may also occur. The specimen may be a component, a connector set, a splice or other device combination intended for fibre optic usage. This second edition cancels and replaces the first edition published in 1995. It constitutes a technical revision.This edition includes the following significant technical changes with respect to the previous edition:
- a complete reconsideration of the entire document, including additional normative references;
- clarification of the device under test (DUT);
- clarification of the relationship between severities, performance categories and the DUT. Keywords: suitability of a fibre optic device to withstand the environmental condition of a bending moment