电力电缆用压缩和机械连接器. 第1-1部分: 在非绝缘导体上测试的额定电压达1kV(Um=1,2kV)的电力电缆用压缩和机械连接器的试验方法和要求

[中文适用范围]： IEC 61238 的本部分适用于额定电压高达 1 kV (Um = 1,2 kV) 的电力电缆的压缩和机械连接器，例如埋地电缆或安装在建筑物中的电缆，具有 a) 符合 IEC 60228 的导体，具有标称值铜的横截面积在 2.5 mm2 到 1200 mm2 之间，铝的横截面积在 16 mm2 到 1200 mm2 之间； b) 最大连续导体温度不超过 90 °C。本文件不适用于架空导线连接器或滑动触点连接器。本文件的目的是定义适用于铜或铝导体电力电缆的压缩和机械连接器的型式试验方法和要求。参考方法是对未使用的导体进行测试。 [外文原描述]： IEC 61238-1-1:2018 applies to compression and mechanical connectors for power cables for rated voltages up to 1 kV (Um = 1,2 kV), for example buried cables or cables installed in buildings, having a) conductors complying with IEC 60228 having nominal cross-sectional areas between 2,5 mm2 and 1 200 mm2 for copper and between 16 mm2 and 1 200 mm2 for aluminium; b) a maximum continuous conductor temperature not exceeding 90 °C. This document is not applicable to connectors for overhead line conductors nor to connectors with a sliding contact. The object of this document is to define the type test methods and requirements which apply to compression and mechanical connectors for power cables with copper or aluminium conductors. The reference method is to perform the tests on unused conductors. This first edition, together with IEC 61238-1-2 and IEC 61238-1-3, cancels and replaces IEC 61238-1:2003. This edition includes the following significant technical changes with respect to IEC 61238-­1:2003: a) The scope has been widened to cover connectors for copper conductors from 10 mm2 down to 2,5 mm2 and has been limited to 1 200 mm2 for connectors for copper and aluminium conductors because test experience and applications are rare for conductors of larger cross-sectional areas. b) Two new mechanical classes have been introduced to satisfy the demand for connectors subjected to no mechanical force and for connectors subjected to higher mechanical forces than those specified in Class 1 for conductors of larger cross-sectional areas. c) For the electrical test, a maximum elevated heating current has been set in order to avoid unrealistic current densities during testing which may change properties of tested connectors. d) For the short-circuit test, the method of calculation and requirements have been updated. e) For the mechanical test, the methods and requirements have been updated.