GB/T 12706.2-2020
Power cables with extruded insulation and their accessories 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) (English Version)

Standard No.

GB/T 12706.2-2020

Language

Chinese, Available in English version

Release Date

2020

Published By

国家市场监督管理总局、中国国家标准化管理委员会

Latest

GB/T 12706.2-2020

Replace

GB/T 12706.2-2008

Scope

This part of GB/T12706 specifies the structure, size and test requirements of the rated voltage 6kV to 30kV extruded insulation power cables. This part applies to power cables with extruded insulation of rated voltage 6kV to 30kV for fixed installation in distribution networks or industrial installations. This section also applies to longitudinal water-blocking structural cables and their tests. When deciding on cable applications, the possible risk of radial water ingress should be considered. This section does not apply to cables for special installation and operating conditions, such as overhead cables, mining industry, nuclear power plants (in and near containment), and underwater or ship cables.

GB/T 12706.2-2020 Referenced Document

• GB/T 12706.2-2020 Power cables with extruded insulation and their accessories 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 156 Standard voltages
• GB/T 2951.11-2008 Common test method for insulating and sheathing materials of electric and optical cables.Part 11:Methods for general application.Measurement of thickness and overall dimensions.Tests for determining the mechanical properties
• GB/T 2951.12-2008 Common test methods for insulating and sheathing materials of electric and optical cables.Part 12:Methods for general application.Thermal ageing methods
• GB/T 2951.13-2008 Common test methods for insulating and sheathing materials of electric and optical cables.Part13:Methods for general application.Measurement for determining the density.Water absorption tests.Shrinkage test
• GB/T 2951.14-2008 Common test methods for insulating and sheathing materials of electric and optical cables.Part 14:Methods for general application-Test at low temperature
• GB/T 2951.21-2008 Common test methods for insulating and sheathing materials of electric and optical cables.Part21:Methods specific to elastomeric compounds.Ozone resistance,hot set and mineral oil immersion tests
• GB/T 2951.31-2008 Common test methods for insulating and sheathing materials of electric and optical cables.Part31:Methods specific to PVC compounds.Pressure test at high temperature.Test for resistance to cracking
• GB/T 2951.32-2008 Common test methods for insulating and sheathing materials of electric and optical cables.Part32:Methods specific to PVC compounds.Loss of mass test.Thermal stability test
• GB/T 2951.41-2008 Common test method for insulating and sheathing materials of electric and optical cables.Part 41:Methods specific to polyethylene and polypropylene compounds.Resistance to environmental stress cracking.Measurement of the melt flow index.Carbon black and/o
• GB/T 3048.12 Test methods for electrical properties of electric cables and wires.Part 12: Partial discharge test
• GB/T 3048.13 Test methods for electrical properties of electric cables and wires.Part 13: Impulse voltage test
• GB/T 3956 Conductors of insulated cables
• GB/T 6995.3 Markings for electric wires and cables.Part 3:Identifications of cables and wires
• IEC 60230:1966 Impulse tests on cables and their accessories

GB/T 12706.2-2020 history

• 2020 GB/T 12706.1-2020 Power cables with extruded insulation and their accessories for rated voltages from 1 kV (Um=1.2 kV) up to 35 kV (Um=40.5 kV)—Part 1: Cables for rated voltage of 1 kV(Um=1.2 kV)and 3 kV(Um=3.6 kV)
• 2008 GB/T 12706.1-2008 Rated voltage 1kV (Um=1.2kV) to 35kV (Um=40.5kV) extruded insulated power cables and accessories Part 1: Rated voltage 1kV (Um=1.2kV) and 3kV (Um=3.6kV) cables
• 2002 GB/T 12706.1-2002 Power cables with extruded insulation and their accessories for rated voltages from 1kV(Um=1.2kV)up to 35kV(Um=40.5kV) Part 1: Cables for rated voltages of 1kV(Um=1.2kV) and 3kV(Um=3.6kV)
• 1991 GB 12706.2-1991 Copper or aluminium conductor extruded plastic insulated power cables with rated voltages up to 35kV--Part 2: Polyvinyl chloride insulated power cables

GB/T 12706.2-2020 -All Parts