GB/T 31840.2-2025 Aluminum alloys power cable with extruded insulation for rated voltages from 1 kV(Um=1.2 kV)up to 35 kV(Um=40.5 kV)—Part 2:Cables for rated voltages from 6 kV(Um=7.2 kV)up to 30 kV(Um=36 kV)
GB/T 31840.2-2025 Aluminum alloys power cable with extruded insulation for rated voltages from 1 kV(Um=1.2 kV)up to 35 kV(Um=40.5 kV)—Part 2:Cables for rated voltages from 6 kV(Um=7.2 kV)up to 30 kV(Um=36 kV)
Basic Information
Scope
This document specifies the voltage marking and materials, product naming, conductors, insulation, shielding, cable cores, inner sheaths and fillers, metal layers, outer sheaths, inspection rules, marking, labeling, and accompanying documents, as well as packaging, transportation, and storage requirements for aluminum alloy core extruded insulated power cables with a rated voltage of 6 kV (Um = 7.2 kV) to 30 kV (Um = 36 kV). It also describes the corresponding test methods.
This document applies to fixed-installation rated voltage aluminum alloy core extruded insulated power cables of 6 kV (Um = 7.2 kV) to 30 kV (Um = 36 kV) used in power distribution networks or industrial installations.
This document does not apply to cables subject to special installation and operating conditions, such as overhead cables, mining industries, nuclear power plants (inside and near the containment vessel), and underwater or shipboard cables.