GB/T 12706.3-2020
Power cables with extruded insulation and their accessories for rated voltages from 1kV (Um=1.2kV) up to 35kV (Um=40.5kV)—Part 3: Cables for rated voltages of 35kV(Um=40.5kV) (English Version)

Standard No.

GB/T 12706.3-2020

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 12706.3-2020

Replace

GB/T 12706.3-2008

Scope

This part of GB/T12706 specifies the structure, dimensions and test requirements for fixedly installed extruded insulated power cables with a rated voltage of 35kV for use in distribution networks or industrial installations. This section applies to longitudinal water-blocking structural cables and their testing. This standard does not apply to cables with special installation and operating conditions, such as those used in overhead cables, in the mining industry, in nuclear power plants (in and near containments), and in cables used underwater or on ships.

GB/T 12706.3-2020 Referenced Document

• GB/T 11017.2-2014 Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 110 kV(U<下标m>=126 kV).Part 2:Power cables
• GB/T 11091 Copper strip for cables
• GB/T 12706.1 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)
• GB/T 156 Standard voltages
• GB/T 16927.1 High-voltage test techniques.Part 1:General definitions and test requirements
• GB/T 17650.1 Test on gases evolved during combustion of materials from cables or optical fiber cables—Part 1：Determination of the halogen acid gas content*， 2021-04-30 Update
• GB/T 17650.2 Test on gases evolved during combustion of materials from cables or optical fiber cables—Part 2: Determination of acidity (by pH measurement) and conductivity*， 2021-04-30 Update
• GB/T 18380.11 Tests on electric and optical fibre cables under fire conditions—Part 11:Test for vertical flame propagation for a single insulated wire or cable—Apparatus*， 2022-03-09 Update
• GB/T 18380.12 Tests on electric and optical fibre cables under fire conditions—Part 12:Test for vertical flame propagation for a single insulated wire or cable—Procedure for 1 kW pre-mixed flame*， 2022-03-09 Update
• GB/T 18380.13 Tests on electric and optical fibre cables under fire conditions—Part 13:Test for vertical flame propagation for a single insulated wire or cable—Procedure for determination of flaming droplets/particles*， 2022-03-09 Update
• GB/T 18380.33 Tests on electric and optical fibre cables under fire conditions—Part 33：Test for vertical flame spread of vertically-mounted bunched wires or cables—Category A*， 2022-04-15 Update
• GB/T 18380.34 Tests on electric and optical fibre cables under fire conditions—Part 34：Test for vertical flame spread of vertically-mounted bunched wires or cables—Category B*， 2022-04-15 Update
• GB/T 18380.35 Tests on electric and optical fibre cables under fire conditions—Part 35：Test for vertical flame spread of vertically-mounted bunched wires or cables—Category C*， 2022-03-09 Update
• GB/T 18380.36 Tests on electric and optical fibre cables under fire conditions—Part 36：Test for vertical flame spread of vertically-mounted bunched wires or cables—Category D*， 2022-03-09 Update
• GB/T 19666 General rules for flame retardant and fire resistant electric wires and cables or optical fiber cables
• 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 3048.10 Test methods for electrical properties of electric cables and wires.Part 10: Spark test of extruded protective sheaths
• 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 7113.2 Flexible insulating sleeving.Part 2:Methods of test
• GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
• IEC 60229 Electric cables - Tests on extruded oversheaths with a special protective function
• IEC 61034 Measurement of smoke density of cables burning under defined conditions - Part 2: Test procedure and requirements*， 2024-04-21 Update
• ISO 48 Rubber, vulcanized or thermoplastic - Determination of hardness (hardness between 10 IRHD and 100 IRHD)
• JB/T 10696.6 Test methods for determining mechanical, physical and chemical properties of electric cables and wires Part 6: Test for abrasion of oversheaths
• JB/T 8996 Guide to the selection of high-voltage cables

GB/T 12706.3-2020 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 12706.3-1991 Copper or aluminium conductor extruded plastic insulated power cables with rated voltages up to 35kV--Part 3: Cross-linked polyethylene insulated power cables

GB/T 12706.3-2020 -All Parts