IEC 60840:2020 额定电压30千伏（U_m=36千伏）至150千伏（U_m=170千伏）挤压绝缘电力电缆及其附件.试验方法和要求

标准编号：IEC 60840:2020

中文名称：额定电压30千伏（U_m=36千伏）至150千伏（U_m=170千伏）挤压绝缘电力电缆及其附件.试验方法和要求

英文名称：Power cables with extruded insulation and their accessories for rated voltages above 30 kV (U_m= 36 kV) up to 150 kV (U_m = 170 kV) - Test methods and requirements

发布日期：2020-05-19

标准范围

IEC 60840:2020作为IEC 60840:2020 RLV提供，其中包含国际标准及其红线版本，显示了与上一版本相比技术内容的所有变化。IEC 60840:2020规定了电力电缆系统的测试方法和要求，单独的电缆和单独的附件，用于固定安装以及额定电压高于30 kV(Um=36 kV)至150 kV(Um=170 kV)。这些要求适用于通常安装和操作条件下的单芯电缆和单独屏蔽的三芯电缆及其附件，但不适用于特殊电缆，如海底电缆及其附件，因为它们可能需要修改标准试验或设置特殊试验条件。本文件不包括挤压绝缘电缆和纸绝缘电缆之间的过渡接头。第五版取消并取代了2011年出版的第四版。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更:-在额定电压高于52 kV时使用的气体浸没电缆终端，除了本文件中规定的常规和型式试验外，还需要根据IEC 62271-209进行设计、型式和常规试验。-介绍了复合室外终端绝缘子的要求。-根据IEC TR 61901:2016，修改了弯曲试验（型式和资格预审试验）规定的试验圆筒直径。-引入了指定为ST12的低烟无卤素外护套材料。-引入了火灾条件下的附加测试:垂直火焰蔓延、烟雾密度、酸度和导电性，应根据为电缆申报的防火性能应用。-增加了导体中水渗透的测试。-除了对接头的外部保护进行测试外，还引入了对所有附件的屏蔽分段绝缘的型式测试。

IEC 60840:2020 is available as IEC 60840:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 60840:2020 specifies test methods and requirements for power cable systems, cables alone and accessories alone, for fixed installations and for rated voltages above 30 kV (U_m = 36 kV) up to and including 150 kV (U_m = 170 kV). The requirements apply to single-core cables and to individually screened three-core cables and to their accessories for usual conditions of installation and operation, but not to special cables, such as submarine cables and their accessories, for which modifications to the standard tests or the setup of special test conditions can be necessary. This document does not cover transition joints between cables with extruded insulation and paper insulated cables. This fifth edition cancels and replaces the fourth edition, published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- Gas immersed cable terminations for use at rated voltages above 52 kV are required to be designed, type and routine tested in accordance with IEC 62271-209 in addition to the routine and type tests specified in this document.
- Requirements are introduced for composite outdoor termination insulators.
- The test cylinder diameters specified for the bending test (type and prequalification tests) have been modified in line with IEC TR 61901:2016.
- A low smoke halogen free oversheath material, designated ST12 is introduced.
- Additional tests under fire conditions are introduced: vertical flame spread, smoke density, acidity and conductivity, which shall be applied according to the fire performance declared for the cable.
- A test for water penetration in the conductor is added.
- In addition to tests on the outer protection of joints, type tests on the screen sectionalizing insulation of all accessories have been introduced.

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