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现行 IEC 61238-1-1:2018
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Compression and mechanical connectors for power cables - Part 1-1: Test methods and requirements for compression and mechanical connectors for power cables for rated voltages up to 1 kV (U<sub>m</sub> = 1,2 kV) tested on non-insulated conductors 电力电缆用压缩和机械连接器.第1-1部分:在非绝缘导体上试验的额定电压1kV(U<sub>m</sub>=1.2kV)以下电力电缆用压缩和机械连接器的试验方法和要求
发布日期: 2018-05-08
IEC 61238-1-1:20 18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,铜的标称横截面积在2.5 mm2和1200 mm2之间,铝的标称横截面积在16 mm2和1200 mm2之间; b)最高连续导体温度不超过90℃。 本文件不适用于架空线路导线连接器,也不适用于带滑动触点的连接器。 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。参考方法是在未使用的导体上进行测试。 本第一版连同IEC 61238-1-2和IEC 61238-1-3,取消并取代IEC 61238-1:20 03。 本版本包括以下与IEC 61238--1:20 03相关的重大技术变更: a)范围已扩大至涵盖铜导体的连接器,从10mm2降至2.5 mm2,并且铜和铝导体的连接器被限制为1,200 mm2,因为对于较大横截面的导体,测试经验和应用很少。 b)引入了两个新的机械类别,以满足对不受机械力的连接器和对较大横截面积导体的机械力高于第1类中规定的机械力的连接器的需求。 c)对于电气测试,已经设置了最大升高的加热电流,以避免在测试期间可能改变被测试连接器特性的不切实际的电流密度。d)对于短路试验,更新了计算方法和要求。 e)对于机械试验,更新了方法和要求。
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.
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归口单位: TC 20
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