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GB/T 25085.3-2020

Chinese Standard: 'GB/T 25085.3-2020'
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BASIC DATA
Standard ID GB/T 25085.3-2020 (GB/T25085.3-2020)
Description (Translated English) Road vehicles--Automotive cables--Part 3: Dimensions and requirements for 30 V a. c. or 60 V d. c. single-core copper conductor cables
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard T36
Classification of International Standard 43.040.10
Word Count Estimation 22,266
Date of Issue 2020-06-02
Date of Implementation 2020-12-01
Older Standard (superseded by this standard) GB/T 25085-2010
Drafting Organization Shanghai Fuerxin Wire and Cable Co., Ltd., Changsha Automotive Electric Research Institute, FAW Jiefang Automobile Co., Ltd., Great Wall Motor Co., Ltd., Geely Automobile Research Institute (Ningbo) Co., Ltd., SAIC Volkswagen Automobile Co., Ltd., Changchun Bulb Electric Wire Co., Ltd., Mande Electronic Appliance Co., Ltd. Baoding Xushui Electrical System Branch, Sichuan Fanhua Electric Co., Ltd., Henan Tianhai Electric Co., Ltd.
Administrative Organization National Automotive Standardization Technical Committee (SAC/TC 114)
Regulation (derived from) National Standards Announcement No. 14 of 2020
Proposing organization Ministry of Industry and Information Technology of the People's Republic of China
Issuing agency(ies) State Administration of Market Supervision and Administration, National Standardization Management Committee

GB/T 25085.3-2020
Road vehicles--Automotive cables--Part 3.Dimensions and requirements for 30 V acor 60 V dcsingle-core copper conductor cables
ICS 43.040.10
T36
National Standards of People's Republic of China
Replace GB/T 25085-2010
Road vehicle car cable
Part 3.AC 30V or DC 60V
Dimensions and requirements of single-core copper conductor cables
2020-06-02 released
2020-12-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Table of contents
Preface Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 General requirements 1
4.1 General test conditions 1
4.2 Safety precautions 2
4.3 Voltage range 2
4.4 Temperature class 2
4.5 Conductor material 2
4.6 Conductor 2
4.7 Insulation thickness 2
4.8 Cable outer diameter 3
4.9 Representative conductor specifications for test 3
4.10 Test items and requirements 3
5 Technical requirements 5
5.1 General 5
5.2 Dimension check 5
5.3 Electrical performance test 5
5.4 Mechanical performance test 6
5.5 Environmental test 7
Appendix A (informative appendix) Conductor specifications, number of filaments and filament diameter 12
Appendix NA (informative appendix) Product model list 15
Reference 16
Preface
GB/T 25085 "Road Vehicle Automotive Cable" is expected to be divided into 10 parts.
---Part 1.Vocabulary and design guidelines;
---Part 2.Test method;
---Part 3.Dimensions and requirements for AC 30V or DC 60V single-core copper conductor cables;
---Part 4.AC 30V or DC 60V single-core aluminum conductor cable size and requirements;
---Part 5.Dimensions and dimensions of AC 600V or DC 900V, AC 1000V or DC 1500V single-core copper conductor cables
Claim;
---Part 6.Dimensions and dimensions of AC 600V or DC 900V, AC 1000V or DC 1500V single-core aluminum conductor cables
Claim;
---Part 7.Dimensions and dimensions of shielded and unshielded multi-core and single-core copper conductor cables with AC 30V or DC 60V round sheath
Claim;
---Part 8.Dimensions and dimensions of shielded and unshielded multi-core and single-core aluminum conductor cables with AC 30V or DC 60V round sheath
Claim;
---Part 9.Shielded and unshielded round sheaths of AC 600V or DC 900V, AC 1000V or DC 1500V
The size and requirements of multi-core and single-core copper conductor cables;
---Part 10.Shielded and unshielded round sheaths of AC 600V or DC 900V, AC 1000V or DC 1500V
The size and requirements of multi-core and single-core aluminum conductor cables.
This part is Part 3 of GB/T 25085.
This section was drafted in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB/T 25085-2010 "Road vehicles 60V and 600V single-core wires", and is similar to GB/T 25085-2010
The main technical changes are as follows.
---Modified normative reference documents (see Chapter 2, Chapter 2 of the.2010 edition);
---The cross-sectional area test content for dimensional inspection has been added (see 5.2.4);
---Added the cable outer diameter test content in the manufacturing process of dimensional inspection (see 5.2.5);
---Added the temperature coefficient test content in the electrical performance test (see 5.3.2);
---Added the content of withstand voltage test after environmental test in the electrical performance test (see 5.3.4);
---Added the test content of the finished cable breaking force in the mechanical performance test (see 5.4.3);
---Added the contents of the cyclic bending test conditions in the mechanical performance test (see 5.4.4);
---Added the flexibility test content in the mechanical performance test (see 5.4.5);
---The content of stress crack resistance test in environmental test has been added (see 5.5.13).
The translation method used in this part is equivalent to the adoption of ISO 19642-3.2019 ``Road vehicles and automotive cables Part 3.AC 30V or direct
Dimensions and requirements for 60V single-core copper conductor cables.
This section has made the following editorial changes.
---Moved the warning of ISO 19642-3.2019 to 4.2 of this part;
--- Use "√" instead of "×" (see Table 2);
--- Use "加" instead of "" (see Table 2, 5.5.3, 5.5.4);
--- Use "-" instead of "×" (see Table 3, Table 5, Table 7, Table A.1);
--- A note has been added, giving reference information about relevant domestic standards (see note 2 in Table 1);
---Added informative appendix NA "Product Model List".
---Revised references.
This part was proposed by the Ministry of Industry and Information Technology of the People's Republic of China.
This part is under the jurisdiction of the National Automotive Standardization Technical Committee (SAC/TC114).
Drafting organizations of this section. Shanghai Fuerxin Wire & Cable Co., Ltd., Changsha Automobile Electric Research Institute, FAW Jiefang Automobile Co., Ltd., Great Wall Motor
Automobile Co., Ltd., Geely Automobile Research Institute (Ningbo) Co., Ltd., SAIC Volkswagen Co., Ltd., Changchun Bulb & Wire Co., Ltd.,
Mande Electronic Appliance Co., Ltd. Baoding Xushui Electric System Branch, Sichuan Fanhua Electric Co., Ltd., Henan Tianhai Electric Co., Ltd.
the company.
The main drafters of this section. Wang Yadong, Li Guoyu, Huo Tianyu, Hu Mengjiao, Li Weiyang, Li Guohui, Wang Sufeng, Zhang Guangyong, Wang Yanwen,
Zhang Jie, Zhai Zhixin, Lu Yong, Wang Rongxi, Chen Lingling, Li Qingsen.
The previous versions of the standards replaced by this part are as follows.
---GB/T 25085-2010.
Road vehicle car cable
Part 3.AC 30V or DC 60V
Dimensions and requirements of single-core copper conductor cables
1 Scope
This part of GB/T 25085 specifies that the nominal system voltage for general-purpose road vehicles shall not exceed AC 30V or DC 60V.
The size and requirements of core copper conductor cables.
This section applies to single-core cables for road vehicles and also applies to cores in multi-core cables.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
ISO 19642-1 Road Vehicles Automotive Cables Part 1.Vocabulary and Design Guidelines (Roadvehicles-Automotiveca-
bles-Part 1.Vocabularyanddesignguidelines)
ISO 19642-2.2019 Road vehicles automotive cables Part 2.Test methods (Roadvehicles-Automotiveca-
bles-Part 2.Testmethods)
EN13602 Copper and copper alloys are used to make drawn round copper wires (Copperandcopperaloys-Drawn,
roundcopperwireforthemanufactureofelectricalconductors)
ASTMB1 Hard Drawn Copper Wire Standard Specification (Standard Specification for Hard Drawn Copper Wire)
ASTMB3 Standard Specification for Soft or Annealed Copper Wire (Standard Specification for Softor Annealed Copper Wire)
ASTMB33 Standard Specification for Tin Coated Softor
AnnealedCopperWireforElectricalPurposes)
ASTMB298 Standard Specification for Silver Coated Soft or Annealed Copper Wire (Standard Specification for Silver Coated SoftorAn-
nealedCopperWire)
ASTMB355 Nickel-plated soft or annealed copper wire standard specification (StandardSpecificationforNickelCoatedSoftorAn-
nealedCopperWire)
3 Terms and definitions
The terms and definitions defined by ISO 19642-1 apply to this document.
4 General requirements
4.1 General test conditions
Should be tested in accordance with the provisions of Table 2 under the test conditions specified in ISO 19642-2.
If both parties agree to modify or change the test methods and requirements, all changes and modifications shall be recorded.
4.2 Safety precautions
The use of this section may involve hazardous materials, operations and equipment. This section is not intended to address possible problems related to the use of this section
All security issues. Users of this section are responsible for formulating appropriate safety regulations and determining the applicability of legal restrictions before use.
4.3 Voltage range
The upper limit of the cable voltage in this section is AC 30V and DC 60V.
4.4 Temperature class
This part is implemented in accordance with all temperature classes in ISO 19642-1.
4.5 Conductor material
The conductor shall be made of stranded copper wires of bare copper or plated copper as shown in Table 1.
The conductor with a size greater than or equal to 0.5mm2 shall be composed of annealed soft copper wire or annealed compressed copper wire.
The conductor with a specification less than 0.5mm2 should be composed of annealed soft copper wire, annealed soft compressed copper wire, non-annealed hard copper wire or copper alloy wire.
The specific requirements of the conductor should meet the requirements of the material used. The elongation rate is determined through negotiation between the supplier and the buyer.
For all conductors except alloys, the resistance and cross-sectional area (CSA) of the finished cable should meet the requirements of Table 6.When using alloy guide
The resistance requirements should be negotiated between the supplier and the buyer.
Note. See Appendix A for examples of twisted structures.
Table 1 Conductor description
Conductor type standard number
Hard drawn copper wire ASTMB1
Soft or annealed copper wire ASTMB3 or EN13602
Tinned soft or annealed copper wire ASTMB33 or EN13602
Silver-plated soft or annealed copper wire ASTMB298
Nickel-plated soft or annealed copper wire ASTMB355
Note 1.Silver-plated or nickel-plated copper wire is used in cables with high "rated temperature class".
Note 2.Various types of conductor materials can also refer to GB/T 3953-2009, GB/T 4910-2009, GB/T 11019-2009, JB/T 3135-2011.
4.6 Conductor
The conductor of the finished cable should meet the requirements of CSA and resistance in Table 6.
The maximum diameter of the conductor should meet the requirements of Table 7.
The stranded structure of the conductor is not a normative requirement.
Note 1.For the existing stranded structure of copper conductors, see Table A.1.
Note 2.The recommended stranded structure of copper conductors is shown in Table A.2.
Other twisted structures shall be negotiated between the supplier and the buyer, but shall comply with the above-mentioned regulations.
4.7 Insulation thickness
This section specifies the following three different insulation thicknesses.
a) Thick-walled insulation;
b) Thin wall insulation;
c) Ultra-thin wall insulation.
The minimum wall thickness of different conductor specifications should meet the requirements of Table 7.
The nominal wall thickness is calculated according to formula (1).
Wnom=1.25×W min or Wnom=
W min
0.8
(1)
Where.
W min---minimum wall thickness, in millimeters (mm);
Wnom---nominal wall thickness, in millimeters (mm).
4.8 Cable outer diameter
The outer diameter of each conductor specification and insulation thickness of the cable should meet the requirements of Table 7.
4.9 Representative conductor specifications for testing
When a test is required, all combinations of conductor specifications, insulation thickness and insulation materials should meet the corresponding regulations.
However, when the supplier and the buyer negotiate to allow testing of representative specifications, only the larger and smaller conductor specifications can be tested to prove the cable
The conformity of the family.
4.10 Test items and requirements
Refer to Table 2 for relevant test items applicable to single-core cables in ISO 19642-2.2019.
Table 2 Test items
Pilot projects
(The project number is consistent with ISO 19642-2.2019)
Mandatory test, select test c
Process a First certification cycle b First certification cycle b
5.1 Dimension check
5.1.2 Cable outer diameter-√ √--
5.1.3 Insulation thickness-√ √--
5.1.4 Conductor diameter---√ √
5.1.5 Cross-sectional area---√ √
5.1.6 Cable outer diameter during manufacturing √----
5.2 Electrical performance test
5.2.1 Conductor resistance-√ √--
5.2.2 Temperature coefficient test-√---
5.2.3 Withstand voltage-√ √--
5.2.4 Withstand voltage d after environmental test-----
5.2.5 Insulation defect √----
5.2.6 Insulation volume resistivity---√ √
5.3 Mechanical performance test
5.3.1 Peeling force---√ √
5.3.2 Wear resistance
Table 2 (continued)
Pilot projects
(The project number is consistent with ISO 19642-2.2019)
Mandatory test, select test c
Process a First certification cycle b First certification cycle b
5.3.2.4 Drag test-√ √--
5.3.2.5 Scraping test-√ √--
5.3.3 Finished cable breaking force---√-
5.3.4 Cyclic bending---√-
5.3.5 Flexibility---√-
5.4 Environmental test
5.4.1 Sample preparation and winding test d
5.4.2 3000h long-term thermal aging under rated temperature class-√---
5.4.3 Rated temperature class plus 240h short-term thermal aging at 25℃-√ √--
5.4.4 Rated temperature class plus 6h thermal overload at 50℃---√ √
5.4.5 High temperature pressure test-√ √--
5.4.6 Thermal shrinkage-√ √--
5.4.7 Low temperature winding-√ √--
5.4.8 Cold shock---√ √
5.4.9 Alternating temperature and humidity f---√-
5.4.10 Hot water f-√---
5.4.11 Resistance to liquid chemicals f,g-√-√-
5.4.12 Cable marking durability f---√ √
5.4.13 Stress crack resistance f---√-
5.4.14 Ozone resistance f---√-
5.4.15 Anti-flammability-√ √--
Note 1."√" means the test items complying with ISO 19642-2.
Note 2."-" means test items that do not need to be tested.
Note 3.Please refer to Appendix NA for product model and specification range.
a Test items for the entire batch of cables during or after manufacturing.
b The frequency of the periodic test should be negotiated between the supplier and the buyer.
c The use of "optional test" shall be determined through negotiation between the supplier and the buyer.
d This test item is only used after sample preparation and environmental durability test.
e Only one abrasion test shall be carried out after negotiation between the supplier and the buyer.
f The compliance of the cable family can be proved by testing only the large and small conductor specifications.
g Some liquids are used for "first identification", and the rest are used for "optional tests".
5 Technical requirements
5.1 General
The cable shall be tested according to ISO 19642-2 according to its rated temperature class.
The cable should be tested in accordance with Table 2.
5.2 Dimension check
5.2.1 Cable outer diameter
The measured value of the cable outer diameter shall be within the limits specified in Table 7.
5.2.2 Insulation thickness
The measured value of the insulation thickness shall not be less than the minimum value specified in Table 7.
5.2.3 Conductor diameter
The measured conductor diameter should not be greater than the maximum value specified in Table 7.
5.2.4 Cross-sectional area (CSA)
The measured values of the cross-sectional area shall be within the limits specified in Table 6.
5.2.5 Cable outer diameter during manufacturing
The outer diameter of the cable shall be continuously monitored during the manufacturing process.
The measured value of the outer diameter of the cable during the manufacturing process should be within the limits specified in Table 7.
5.3 Electrical performance test
5.3.1 Conductor resistance
The measured value of conductor resistance should not be greater than the maximum value specified in Table 6.
5.3.2 Requirements for temperature coefficient measurement
For pure copper, αρ=3.93×10-3K-1.
For copper alloys, αρ should be determined in accordance with 5.2.2 of ISO 19642-2.2019.
5.3.3 Withstand voltage
Apply a voltage of 1kV and apply for 30 minutes, and the insulation should not be broken down.
Note. No need to climb voltage.
5.3.4 Withstand voltage after environmental test
Apply a voltage of 1kV, apply for 1min, and the insulation should not be broken down.
5.3.5 Insulation defect
Continuous application of AC 3kV voltage, insulation should not be broken down.
5.3.6 Insulation volume resistivity
Insulation volume resistivity should not be less than 1×109Ω·mm.
5.4 Mechanical performance test
5.4.1 Peel force
The measuring force should be within the negotiated value range between the supplier and the buyer.
5.4.2 Wear resistance
5.4.2.1 General
The test is only applicable to cables with conductor specifications not greater than 6mm2, and either drag or scrape test should be performed.
Both the supplier and the demander should clarify which test to use.
Cables with a conductor size greater than 6mm2 need not be subjected to abrasion test.
5.4.2.2 Drag test
The cable sample shall be tested after adding a heavy object according to the requirements of Table 3.
The average value of 4 readings of the cable sample should not be less than the specified value in Table 3.
Table 3 Dragging test requirements
Conductor specification
mm2
Thick wall thin wall ultra thin wall
Additional weight a
kg
Minimum belt length
mm
Additional weight a
kg
Minimum belt length
mm
Additional weight a
kg
Minimum belt length
mm
0.13
0.22
0.35
--0.1
0.05
0.5
0.75
1.25
1.5
0.5
0.2
0.1
2.5
1.5
0.5
0.2 125
--
Note. "-" means that the cable type does not exist.
a The vertical force exerted on the sample should be the sum of the force exerted by the bracket, the rotating arm, the support rod and the additional weight.
5.4.2.3 Scraping test
The cable sample shall be subjected to the total vertical force as specified in Table 4.
The minimum number of cycles should not be less than the specified value in Table 4.
Table 4 Scratch test requirements
Conductor specification
mm2
0.13 0.22 0.35 0.5 0.75 1 1.25 1.5 2 2.5 3 4 5 6
Vertical force
4.00 7.00
deviation
±0.05
Minimum number of cycles 100 125 150 300 350 400 400 450 500 550 600 700 700 700
5.4.3 Breaking force of finished cable
The cable specification and breaking force to be tested shall be negotiated between the supplier and the buyer.
5.4.4 Loop bending
The test is only applicable to cables with conductor sizes not greater than 25mm2.
The requirements of the test shall be negotiated between the supplier and the buyer.
5.4.5 Flexibility test
The test is applicable to cables with conductor specifications not less than 8mm2.
The requirements of the test shall be negotiated between the supplier and the buyer.
5.5 Environmental test
5.5.1 Sample preparation and winding test
ISO 19642-2.2019 5.4.1 specifies the size of the mandrel used to prepare the sample in the environmental test.
It also specifies the requirements for winding tests to detect defects caused by environmental stress.
5.5.2 3000h long-term thermal aging at rated temperature level
The sample should be aged for 3000h at the upper limit temperature of the rated temperature class.
After the sample is wound, the conductor should not be exposed.
During the withstand voltage (5.3.4) of the sample after the environmental test, the insulation shall not be broken down.
5.5.3 Rated temperature class plus 240h short-term thermal aging at 25℃
The sample should be aged for 240h at the upper limit temperature of the rated temperature class plus 25℃.
After the sample is wound, the conductor should not be exposed.
During the withstand voltage (5.3.4) of the sample after the environmental test, the insulation shall not be broken down.
5.5.4 Rated temperature class plus 6h thermal overload at 50℃
The sample should be aged for 6h at the upper limit temperature of the rated temperature class plus 50℃.
After the sample is wound, the conductor should not be exposed.
During the withstand voltage (5.3.4) of the sample after the environmental test, the insulation shall not be broken down.
5.5.5 High temperature pressure test
During the withstand voltage (5.3.4) of the sample after the environmental test, the insulation shall not be broken down.
5.5.6 Heat shrink
The maximum shrinkage at either end of the specimen should not exceed 2mm.
5.5.7 Low temperature winding
The sample should be placed at the lower limit temperature of the rated temperature class for 4h.
After the sample is wound, the conductor should not be exposed.
During the withstand voltage (5.3.4) of the sample after the environmental test, the insulation shall not be broken down.
5.5.8 Cold shock
The sample should be tested in accordance with the weight required in Table 5.
After the sample is impacted, the conductor should not be exposed.
During the withstand voltage (5.3.4) of the sample after the environmental test, the insulation shall not be broken down.
Table 5 Cold shock test requirements
Conductor specification (a)
mm2
Weight
Thick wall thin wall ultra thin wall
a≤0.35
0.35 \u003ca≤2.5
2.5 \u003ca≤4
4 \u003ca≤10
10 \u003ca≤50
50 \u003ca≤95
95 \u003ca
Note. "-" means that the cable type does not exist.
5.5.9 Alternating temperature and humidity
After the sample is wound, the conductor should not be exposed.
During the withstand voltage (5.3.4) of the sample after the environmental test, the insulation shall not be broken down.
5.5.10 Hot water
Connect the sample conductor to the “” pole and the copper electrode to the “-” pole for testing.
Use a new sample, change the polarity and re-test.
For both samples, the insulation volume resistivity should not be less than 1×109Ω·mm.
Visually inspect the insulation for cracks.
During the withstand voltage (5.3.4) of the sample after the environmental test, the insulation should not be broken down.
5.5.11 Resistant to liquid chemicals
The sample is wound after being impregnated with liquid chemicals, and the conductor should not be exposed after winding.
During the withstand voltage (5.3.4) of the sample after the environmental test, the insulation shall not be broken down.
5.5.12 Cable mark durability
All cable markings should be kept clear.
5.5.13 Stress crack resistance
The test is applied to the use of insulating materials that are susceptible to environmental stress cracking problems (such as FEP and ETFE, and the conductor size is less than
For cables of 6mm2), whether to carry out the test is negotiated by both parties.
After the sample is tested, the conductor should not be exposed.
During the withstand voltage (5.3.4) of the sample after the environmental test, the insulation shall not be broken down.
5.5.14 Ozone resistance
After the sample is tested, visually check that there should be no cracks on the insulating surface.
5.5.15 Anti-flammability
Any burning flame on the insulating material should be extinguished within 30s after ignition, and the insulation at least 50mm on the top of the sample should be maintained
Unburned.
All 5 samples should pass the test.
Table 6 CSA and conductor resistance
conductor
specification
mm2
CSA
mm2
Maximum conductor resistance at 20℃
mΩ/m
Maximum a Minimum bare copper or silver-plated copper tin-plated copper nickel-plated copper
0.13 0.137 0.127 136 140 142
0.22 0.220 0.203 84.8 86.5 87.9
0.35 0.345 0.317 54.4 55.5 56.8
0.50 0.502 0.465 37.1 38.2 38.6
0.75 0.754 0.698 24.7 25.4 25.7
1 1.01 0.932 18.5 19.1 19.3
1.25 1.25 1.16 14.9 15.9 16.0
1.5 1.47 1.36 12.7 13.0 13.2
2 1.98 1.83 9.42 9.69 9.82
2.5 2.45 2.27 7.60 7.82 7.92
Table 6 (continued)
conductor
specification
mm2
CSA
mm2
Maximum conductor resistance at 20℃
mΩ/m
Maximum a Minimum bare copper or silver-plated copper tin-plated copper nickel-plated copper
3 3.03 2.80 6.15 6.36 6.41
4 3.95 3.66 4.71 4.85 4.91
5 4.73 4.38 3.94 4.02 4.11
6 5.93 5.49 3.14 3.23 3.27
8 7.82 7.24 2.38 2.52 2.60
10 10.2 9.47 1.82 1.85 1.90
12 12.3 11.3 1.52 1.60 1.66
16 16.1 14.9 1.16 1.18 1.21
20 19.5 18.1 0.955 0.999 1.03
25 25.1 23.2 0.743 0.757 0.774
30 28.8 26.6 0.647 0.684 0.706
35 35.3 32.7 0.527 0.538 0.549
40 39.4 36.5 0.473 0.500 0.516
50 50.6 46.9 0.368 0.375 0.383
60 59.1 54.7 0.315 0.333 0.344
70 71.9 66.6 0.259 0.264 0.270
85 85.0 78.7 0.219 0.225 0.228
95 95.0 88.0 0.196 0.200 0.204
120 122 113 0.153 0.156 0.159
a Maximum CSA allows other target values. However, the target value of the maximum CSA should be negotiated between the supplier and the buyer.
Table 7 Cable size requirements
conductor
specification
mm2
conductor
Outer diameter
mm
Max a
Thick wall thin wall ultra thin wall
Insulation thickness
mm
Cable outer diameter
mm
Insulation thickness
mm
Cable outer diameter
mm
Insulation thickness
mm
Cable outer diameter
mm
Min b max a min c min b max a min c min b max a min c
0.13 0.55 0.20 1.05 0.95 0.16 0.95 0.85
0.22 0.70---0.20 1.20 1.10 0.16 1.05 0.95
0.35 0.90 0.20 1.40 1.20 0.16 1.20 1.10
0.50 1.10 0.48 2.30 2.00 0.22 1.60 1.40 0.16 1.40 1.30
0.75 1.30 0.48 2.50 2.20 0.24 1.90 1.70 0.16 1.60 1.45
1 1.50 0.48 2.70 2.40 0.24 2.10 1.90 0.16 1.75 1.55
Table 7 (continued)
conductor
specification
mm2
conductor
Outer diameter
mm
Max a
Thick wall thin wall ultra thin wall
Insulation thickness
mm
Cable outer diameter
mm
Insulation thickness
mm
Cable outer diameter
mm
Insulation thickness
mm
Cable outer diameter
mm
Min b max a min c min b max a min c min b max a min c
1.25 1.70 0.48 2.95 2.40 0.24 2.30 2.10 0.16 2.00 1.70
1.5 1.80 0.48 3.00 2.70 0.24 2.40 2.20 0.16 2.10 1.90
2 2.00 0.48 3.30 3.00 0.28 2.80 2.50 0.20 2.40 2.20
2.5 2.20 0.56 3.60 3.30 0.28 3.00 2.70 0.20 2.70 2.50
3 2.40 0.56 4.10 3.80 0.32 3.40 3.10
4 2.80 0.64 4.40 4.00 0.32 3.70 3.40
5 3.10 0.64 4.90 4.50 0.32 4.20 3.90
6 3.40 0.64 5.00 4.60 0.32 4.30 4.00
8 4.30 0.64 5.90 5.00 0.32 5.00 4.60
10 4.50 0.8 6.50 5.90 0.48 6.00 5.30
12 5.40 0.8 7.40 6.60 0.48 6.50 5.80
16 6.30 0.8 8.30 7.70 0.52 7.20 6.40
20 6.90 0.88 9.10 8.10 0.52 7.80 7.00
25 7.80 1.04 10.40 9.40 0.52 8.70 7.90
30 8.30 1.04 10.90 9.70 0.64 9.60 8.70
35 9.00 1.04 11.60 9.60 0.64 10.40 9.40
40 9.60 1.12 12.40 11.20 0.71 11.10 10.00
50 10.50 1.2 13.50 11.50 0.71 12.20 11.00
60 11.60 1.2 14.60 13.40 0.80 13.30 12.00
70 12.50 1.2 15.50 13.50 0.80 14.40 13.00
85 13.60 1.28 16.80 14.80 0.90 15.80 14.40
95 14.80 1.28 18.00 16.00 0.90 16.70 15.30
120 16.50 1.28 19.70 17.70---
Note. "-" means that the cable type does not exist.
a The maximum cable outer diameter listed in the table is the specified value for stranded conductors. Negotiation between the supplier and the demander, allowing multiple twisting and other twisting methods to have a different maximum
Conductor diameter. This difference may affect the size of the cable outer diameter in the table.
b The nominal insulation thickness Wnom is calculated according to the following formula.
Wnom =1.25×Wmin or Wnom =
Wmin
0.8
Where.
Wmin---Minimum wall thickness, in millimeters (mm);
Wnom---nominal wall thickness, in millimeters (mm).
c For compressed conductors, the minimum cable outer diameter is not assessed.
Appendix A
(Informative appendix)
Conductor specifications, number of filaments and diameter of filaments
A.1 Conductor---existing stranded structure
The conductor specifications, number of filaments and diameter of filaments of the existing stranded structure are shown in Table A.1.
Table A.1 The conductor specifications, number of filaments and filament diameter of the existing stranded structure
Conductor specification
mm2
Structure Aa
(Regular stranding)
Structure Ba
(Irregular stranding)
Structure Ca
(Irregular stranding)
Number of filaments
Maximum single wire diameter
mm
Number of filaments
Maximum single wire diameter
mm
Number of filaments
Maximum single wire diameter
mm
0.13
0.22
0.16
0.21
----
0.35 7 0.27 12 0.21 19 0.16
0.50
7 0.32----
19 0.19 16 0.21 26 0.16
0.75 19 0.24 24 0.21 38 0.16
1 19 0.27 32 0.21 54 0.16
1.25 19 0.30 16 0.33 50 0.19
1.5 19 0.33 30 0.26 76 0.16
2 19 0.38 28 0.31 105 0.16
2.5 37 0.30 50 0.26 140 0.16
3 37 0.34 44 0.31 160 0.16
4 37 0.38 56 0.31 224 0.16
5 37 0.43 65 0.33 250 0.16
6 37 0.45 84 0.31 320 0.16
8 98 0.33 50 0.46 240 0.21
10 63 0.46 80 0.41 320 0.21
12 154 0.33 96 0.41 380 0.21
16 105 0.46 126 0.41 512 0.21
20 247 0.33 152 0.41 610 0.21
25 154 0.46 196 0.41 790 0.21
30 361 0.33 224 0.41 900 0.22
35 551 0.30 276 0.41 1070 0.21
Table A.1 (continued)
Conductor specification
mm2
Structure Aa
(Regular stranding)
Structure Ba
(Irregular stranding)
Structure Ca
(Irregular stranding)
Number of filaments
Maximum single wire diameter
mm
Number of filaments
Maximum single wire diameter
mm
Number of filaments
Maximum single wire diameter
mm
40 494 0.33 308 0.41 1200 0.21
50 798 0.30 396 0.41 1600 0.21
60 741 0.33 296 0.51 1200 0.26
70 1140 0.30 360 0.51 1427 0.26
95 836 0.40 475 0.51 1936 0.26
120 1064 0.40 608 0.51 2450 0.26
Note. "-" means that the conductor does not exist.
a The twisted structure scheme given is only an example and does not indicate a necessary structure. As long as it meets the conductor resistance and CSA requirements, it can be negotiated by the supplier and the buyer
Use other twisted structures.
A.2 Conductor---Recommended stranded structure
The conductor specifications, the number of filaments and the diameter of filaments for the recommended stranded structure are shown in Table A.2.
Table A.2 Recommended conductor specifications, number of filaments and diameter of filaments for stranded structures
Conductor specification a
mm2
Standard structure c Soft structure c
Root number b
Maximum single wire diameter
mm
Root number b
Maximum single wire diameter
mm
0.13 7 0.16 19 0.11
0.22 7 0.21 30 0.11
0.35 7 0.26 19 0.16
0.5 19 0.19 37 0.14
0.75 19 0.24 38 0.16
1 19 0.27 54 0.16
1.25 19 0.30 66 0.16
1.5 19 0.33 76 0.16
2 19 0.38 105 0.16
2.5 37 0.30 140 0.16
3 44 0.31 160 0.16
4 56 0.31 224 0.16
5 70 0.31 250 0.16
Table A.2 (continued)
Conductor specification a
mm2
Standard structure c Soft structure c
Root number b
Maximum single wire diameter
mm
Root number b
Maximum single wire diameter
mm
6 84 0.31 189 0.21
8 116 0.31 240 0.21
10 144 0.31 320 0.21
12 174 0.31 380 0.21
16 228 0.31 512 0.21
20 276 0.31 610 0.21
25 355 0.31 790 0.21
30 408 0.31 903 0.21
35 501 0.31 1102 0.21
40 558 0.31 1235 0.21
......
Related standard:   GB/T 25085.4-2020
Related PDF sample:   GB/T 25089-2010  GB/T 38892-2020
   
 
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