GB/T 31840.3-2025 Aluminum alloys power cables with extruded insulation for rated voltages from 1 kV(Um=1.2 kV)up to 35 kV(Um=40.5 kV)—Part 3:Cables for rated voltages 35 kV(Um=40 kV)
GB/T 31840.3-2025 Aluminum alloys power cables with extruded insulation for rated voltages from 1 kV(Um=1.2 kV)up to 35 kV(Um=40.5 kV)—Part 3:Cables for rated voltages 35 kV(Um=40 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, labels and accompanying documents, packaging, transportation, and storage requirements for rated voltage 35 kV (Um=40.5 kV) aluminum alloy core extruded insulated power cables, and describes the corresponding test methods.
This document is applicable to fixed-installation aluminum alloy core extruded insulated power cables with a rated voltage of 35 kV (Um=40.5 kV).
This document is not applicable 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.