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

[中文适用范围]： 本文档规定了用于固定安装的额定电压高于30 kV (Um = 36 kV) 直至包括150 kV (Um = 170 kV) 的电力电缆系统、电缆 alone 和附件 alone 的试验方法和要求。要求适用于单芯电缆和单独屏蔽的三芯电缆及其附件，适用于常规安装和运行条件，但不适用于特殊电缆（如海底电缆及其附件），对于特殊电缆可能需要修改标准试验或设置特殊试验条件。本文档不涵盖挤包绝缘电缆和纸绝缘电缆之间的过渡接头。 [外文原描述]： 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 (Um = 36 kV) up to and including 150 kV (Um = 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. The contents of the corrigendum of February 2021 have been included in this copy.