标准摘要
[中文适用范围]： IEC 61300 这部分的目的是确定光纤设备对高温、潮湿和寒冷条件下的劣化影响的抵抗力。它的目的是揭示被测设备 (DUT) 中因呼吸而不是吸收湿气引起的缺陷。该测试涵盖了裂缝和裂缝中滞留水的冻结以及冷凝的影响。然而，冷凝程度将根据 DUT 的尺寸和热质量而变化。该测试与其他循环湿热测试的不同之处在于，它的严格程度提高是由于： a) 在给定时间内导致泵送动作的大量温度变化； b) 更大的循环温度范围； c) 较高的温度变化率； d) 包括多次零下温度的偏移。这种类型的测试对于由各种不同材料制成的光纤器件尤其重要。 [外文原描述]： IEC 61300-2-21:2009 determines the resistance of a fibre optic device to the deteriorative effects of high temperature, humidity and cold conditions. It is intended to reveal defects in a device under test (DUT) caused by breathing as opposed to absorption of moisture. The test covers the effect of the freezing of trapped water in cracks and fissures as well as condensation. However, the degree of condensation will vary depending on the size and thermal mass of the DUT. The changes with respect to the previous edition are: - to reconsider the whole parts of the standard; - to describe the apparatus and procedure in greater details; - to define with precision the number of 24 cycles in the severity.
英文名称Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-21: Tests - Composite temperature/humidity cyclic test