GB/T 31840.2-2015 in English

《GB/T 31840.2-2015额定电压1kV（Um=1.2kV）到35kV（Um=40.5 kV） 铝合金芯挤包绝缘电力电缆 第2部分：额定电压6kV（Um=7.2kV）到30kV（Um=36kV）电缆》由524（中国电力企业联合会）归口，主管部门为中国电力企业联合会。
GB/T31840的本部分规定了用于配电网或工业装置中,固定安装的额定电压6kV(Um =7.2kV)到30kV(Um =36kV)铝合金芯挤包绝缘电力电缆的材料、结构、尺寸和试验要求。
本部分适用于额定电压6kV(Um =7.2kV)到30kV(Um =36kV)铝合金芯挤包绝缘电力电缆。
在决定电缆应用时,建议考虑径向进水的可能风险。本部分包括了所谓纵向阻水结构电缆及其试验。
本部分不包括特殊安装和运行条件的电缆,例如用于架空电缆、采矿工业、核电厂(安全壳内及其附近),以及用于水下或船舶的电缆。

Scope

This part of GB/T 31840 specifies the rated voltage for fixed installations used in distribution networks or industrial installations from 6 kV (U_m = 7.2 kV) to 30 kV (U_m = 36 kV ) Material, structure, size and test requirements of aluminum alloy core extruded insulated power cables. This section applies to power cables with aluminum alloy core extruded insulation for rated voltages from 6 kV (U_m = 7.2 kV) to 30 kV (U_m = 36 kV). When deciding on the cable application, it is recommended to consider the possible risk of radial water ingress. This standard covers so-called longitudinal water-blocking structural cables and their tests. This section does not cover cables for special installation and operating conditions, such as cables for overhead cables, the mining industry, nuclear power plants (in and near containment), and cables for underwater or on ships.