绝缘子串元件的U形夹和舌形联轴器.尺寸

[中文适用范围]： 本国际标准适用于帽型和棒型悬式绝缘子串单元以及用于此类绝缘子的金具。本文件旨在定义一系列销轴连接（clevis and tongue couplings）的尺寸，以允许组装由不同制造商提供的绝缘子或金具。 [外文原描述]： IEC 60471:2020 applies to string insulator units of the cap and pin type and also of the long rod type as well as the fittings used with such insulators. The object of this document is to define the dimensions of a series of clevis and tongue couplings to permit the assembly of insulators or fittings supplied by different manufacturers. This third edition cancels and replaces the second edition published in 1977. This edition includes the following significant technical changes with respect to the previous edition: - there are no new clevis and tongue couplings; - For the dimensions of the existing designated size of couplings that characterize the same location, the effective number of the size is unified.