额定电压从6kV（Um=7.2kV）到60kV（U=72.5kV）的挤压绝缘海底电力电缆及其附件.试验方法和要求

[中文适用范围]： 本文件规定了额定电压从6 kV (Um = 7,2 kV) 到 60 kV (Um = 72,5 kV) 的用于固定海底安装的具有挤包绝缘的电力电缆系统及其附件的测试方法和要求。本文件包括适用于海底电缆系统的电气测试、材料和部件的物理测试以及特定的机械测试。要求适用于带铠装单芯电缆和三相芯电缆，及其配套附件、终端和接头，适用于通常的安装和运行条件，但不适用于特殊电缆及其附件，例如动态应用（即直接连接到浮动结构）的海底电缆，此类电缆可能需要修改标准测试或制定特殊的测试条件。本文件适用于永久浸没条件（水深可达250米）下安装的海底电缆。注：本文件不包括仅具有机械功能的附件，如悬垂装置或铠装夹。 [外文原描述]： IEC 63026:2019 specifies test methods and requirements for power cable systems, cables with extruded insulation and their accessories for fixed submarine installations, for rated voltages from 6 kV (Um = 7,2 kV) up to 60 kV (Um = 72,5 kV). This document includes the electrical tests and the physical tests on materials and components as well as the specific mechanical tests that are applicable to submarine cable systems. The requirements apply to armoured single-core cables and three-core cables in combination with their accessories, terminations and joints for usual conditions of installation and operation, but not to special cables and their accessories, such as submarine cables for dynamic applications (i.e. for direct connection to a floating structure), for which modifications to the standard tests can be necessary or special test conditions be devised. This document is applicable to submarine cables installed in permanently submerged conditions with water depths up to 250 m. This document does not include accessories having a mechanical function only, such as hang-offs or armour clamps.