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GB/T 5013.1-2008 PDF English

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GB/T 5013.1-2008: Rubber insulated cables of rated voltages up to and including 450/750 V -- Part 1: General requirements
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GB/T 5013.1: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] deliveryName of Chinese StandardStatus
GB/T 5013.1-2008English85 Add to Cart 0-9 seconds. Auto-delivery Rubber insulated cables of rated voltages up to and including 450/750 V -- Part 1: General requirements Valid
GB 5013.1-1997English759 Add to Cart 3 days Rubber insulated cables of rated voltages up to and including 450/750V. Part 1: General requirements Obsolete
GB 5013.1-1985EnglishRFQ ASK 3 days Rubber insulated flexible cables of rated voltages up to and including 450/750V--Part 1: General requirements Obsolete

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GB/T 5013.1-2008: Rubber insulated cables of rated voltages up to and including 450/750 V -- Part 1: General requirements


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Rubber insulated cables of rated voltages up to and including 450/750 V. Part 1.General requiremnts ICS 29.060.20 K13 National Standards of People's Republic of China GB/T 5013.1-2008/IEC 60245-1..2003 Replacing GB 5013.1-1997 Rated voltage 450/750 犞 and below rubber insulated cables Part 1.general requirements (IEC 60245-1..2003, IDT) Posted.2008-01-22 2008-09-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

GB/T 5013 "rated voltage 450/750V and below rubber insulated cables" is divided into eight sections. --- Part 1.General requirements; --- Part 2.Test methods; --- Part 3.Heat-resistant silicone rubber insulated cables; --- Part 4.Cords and flexible cables; --- Part 5.elevator cables; --- Part 6.welding machine cables; --- Part 7.Heat-resistant vinyl - vinyl acetate rubber insulated cables; --- Part 8.Special soft wire. This section GB/T 5013 Part 1.This section identical with IEC 60245-1..2003 "rated voltage 450/750V and Lower rubber insulated cables - Part 1.General requirements "(English version). For ease of use, this part of GB/T 5013 made the following editorial changes. --- Use the decimal point "." Instead of as a decimal point comma ","; --- Remove the foreword of the international standard; --- Increased information appendix C; --- Removed the "NOTEThecolourschemeisunderconsideration." In Chapter 4; --- Removed references. This section from the date of implementation instead of GB 5013.1-1997. This section compared with GB 5013.1-1997 main changes are as follows. --- Table 1 1.2.1 in IE4 insulation aging provisions should be with the conductor, 1.3 "oxygen bomb after aging performance" omitted, the insulation on the IE4 increased 4 "Ozone resistance test"; --- Increasing the definition 2.1.5 "Ethylene Propylene rubber mixture or other equivalent synthetic elastomer" and 2.1.6 "cross-linked polyvinyl chloride"; --- Removed 3.2; 3.1.2 changed to 3.2, 3.1.3 changed to 3.3; --- 3.3.1 in the sign distance to "550mm" and "275mm"; --- 5.2.1 canceled the "ordinary rubber compound insulated cable --- IE1 type", an increase of "EPDM rubber mixture or its equivalent Material insulated cable --- IE4 type "and" XP1 type (cross-linked polyvinyl chloride) "; --- 5.5.1 added "SX1 type (cross-linked polyvinyl chloride)"; --- Appendix A "special purpose flexible cable" an increase of 86,87,88,89 four models; --- Appendix C model reference table was canceled 51, while the preparation of the model specifications. This part of the Appendix A and Appendix B normative appendix, Appendix C is an informative annex. This part is proposed by China Electrical Equipment Industry Association. This part of the national wire and cable standardization Technical Committee. This section is responsible for drafting unit. Shanghai Electric Cable Research Institute. The main drafters of this section. gold standard, Liu Jingping, Qu Wenbo. This part of the standard replaces the previous editions are. GB 5013.1-1985, GB 5013.1-1997. GB/T 5013.1-2008/IEC 60245-1..2003 Rated voltage 450/750 犞 and below rubber insulated cables Part 1.general requirements

1 Overview

1.1 Scope GB/T 5013 This section applies to the rated voltage U0/U 450/750V and below, vulcanized rubber insulation and sheath (if any) Hard and soft cables for the exchange of rated voltage not exceeding 450/750V power plant. NOTE. The term "flexible cord" is used for some models of flexible cables. Various types of cables in GB/T 5013.3, GB/T 5013.4 and other parts of the provisions of the cable model representation in Appendix A. GB/T 5013 Test methods specified in parts 1 to 8 see GB/T 5013.2, GB/T 18380.1 and GB/T 2951 Related parts. 1.2 Normative references The following documents contain provisions which, through reference in this part of GB/T 5013, become the provisions of this section. Any reference to the date of the citation All subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to be reached under this section The parties to the agreement study whether the latest versions of these documents are available. For undated references, the latest version applies to this book section. GB/T 2951.1-1997 Common test methods for cable insulation and sheathing materials - Part 1.Common test methods Section 1.Thickness Measurement of dimensions and dimensions --- Mechanical test (idt IEC 60811-1-1..1993) GB/T 2951.2-1997 Common test methods for insulating and sheathing materials of cables Part 1.Common test methods Section 2.Heat Aging test method (idt IEC 60811-1-2.1985) GB/T 2951.4-1997 Common test methods for cable insulation and sheathing materials - Part 1.Common test methods Section 4.Low Temperature test method (idt IEC 60811-1-4.1985) GB/T 2951.5-1997 Common test methods for insulating and sheathing materials of cables - Part 2.Special test methods for elastomeric compounds Method 1.Ozone resistance test --- Thermal elongation test --- Immersed mineral oil test (idt IEC 60811-2-1.1986) GB/T 2951.6-1997 General test methods for insulating and sheathing materials of cables - Part 3.Specific tests for PVC compounds Methods Section 1.High Temperature Pressure Test --- Cracking Resistance Test (IEC 60811-3-1.1985, IDT) GB/T 3956 cable conductor (GB/T 3956-1997, idt IEC 60228.1978) GB/T 5013.2-2008 Rubber insulated cables of rated voltages up to and including 450/750V - Part 2.Test methods (IEC 60245-2. 1998, IDT) GB/T 5013.3 Rated voltage 450/750V and below rubber insulated cables - Part 3.Heat-resistant silicone rubber insulated cables (GB/T 5013.3-2008, IEC 60245-3..1994, IDT) GB/T 5013.4 Rated voltage 450/750 V and below rubber insulated cables - Part 4.Cords and flexible cables (GB/T 5013.4-2008, IEC 60245-4..2004, IDT) GB/T 5013.7-2008 Rated voltage 450/750V and below rubber insulated cables - Part 7.Heat-resistant ethylene - vinyl acetate Ester rubber insulated cable (IEC 60245-7..1994, IDT) GB/T 18380.1 burning test of cables under fire conditions - Part 1.Vertical burning test of single insulated wire or cable Methods (GB/T 18380.1-2001, IEC 60332-1..1993, IDT)

2 Terms and definitions

The following terms and definitions apply to GB/T 5013 parts. GB/T 5013.1-2008/IEC 60245-1..2003 2.1 Insulation and sheathing material definition 2.1.1 The mixture is classified according to the measured properties of the prescribed test. Note. The model number is not directly related to the composition of the mixture. 2.1.2 Eraser blends are properly selected, formulated, processed and vulcanized, and its unique components are rubber and/or synthetic elastomer blends. Note. Vulcanization refers to the next process of insulation and/or sheath extrusion, in order to permanently crosslink the elastomer. 2.1.3 Elastomers of vulcanized mixtures are neoprene or other comparable synthetic elastomers that behave like PCP. 2.1.4 The elastomers of the crosslinking mixture are ethylene-vinyl acetate or other comparable synthetic elastomers similar in performance to EVA. 2.1.5 The elastomer of the crosslinking mixture is ethylene-propylene rubber or other comparable synthetic elastomer with properties similar to those of EPR. 2.1.6 The appropriate choice, proportioning and processing of the PVC material mixture with the appropriate cross-linking agent, after cross-linking to achieve the subsequent detailed specification Performance requirements. 2.2 Test definition 2.2.1 Type test refers to the general commercial principle, GB/T 5013 provisions of a type of cable before the test carried out to prove that electricity Cable has good performance, to meet the requirements of the use of the provisions. NOTE The essence of type testing is that it is not necessary to repeat the tests once these tests have been carried out unless the cable material or design changes affect cable performance. 2.2.2 Tests on finished cable samples or on components taken from finished cable to demonstrate that the finished cable product conforms to the design specifications. 2.3 The rated voltage of a cable is the reference voltage for cable design and electrical performance tests. Note 1.The rated voltage U0/U that the unit is V. U0 is the voltage rms between any insulated conductor and "ground" (metal sheath of the cable or surrounding medium). U is the voltage rms between any two phase conductor in a multi-core cable or single-core cable system. In AC systems, the rated voltage of the cable should be at least equal to the nominal voltage of the system in which the cable is used. This condition applies to U0 and U values. In DC systems, the system nominal voltage should not exceed 1.5 times the rated voltage of the cable. Note 2.The operating voltage of the system allows to exceed 10% of the nominal voltage of the system for a long time. If the rated voltage of the cable is at least equal to the nominal voltage of the system, The cable can be used at a working voltage higher than 10% of the rated voltage. GB/T 5013.1-2008/IEC 60245-1..2003

3 logo

3.1 Origin signs and cable identification The cable shall have a manufacturing mark, which may be a mark or a duplicate mark of the manufacturer's name or mark. The markings may be ink-printed or embossed on insulators or jackets, or the ink may be printed on a scraping tape or marking tape. 3.1.1 continuity of signs The distance between the end of a mark and the beginning of the next mark shall not exceed. --- If the mark on the outer sheath of the cable, 550mm; --- If the sign in the sheathless cable insulation, 275mm; --- If the logo is sheathed cable insulation, 275mm; --- If the logo in the sheath with a cable package, 275mm. 3.2 Rub resistance Ink printing signs should be rubbed. Should according to GB/T 5013.2-2008 in 1.8 test to check whether the requirements. 3.3 clarity All signs should be clearly written. The color of the marking line should be easily identifiable or easily identifiable and may be wiped clean with petrol or another suitable solvent if necessary.

4 insulated core identification

Each insulated core shall be identified as follows. --- Five cores and the following cable color identification, see 4.1; --- More than five cores with color or number identification, see 4.1 and 4.2. 4.1 Insulation core color recognition 4.1.1 General requirements Cable insulated cores shall be colored or other suitable methods of identification. In addition to the green/yellow combination colors, only one color per cable core shall be used. Any multicore cable should not use red, gray, white, and green or yellow not in combination. 4.1.2 color chromatography The preferred chromatography is as follows. Single-core cable. no priority chromatography; Two-core cable. no priority chromatography; Three-core cable. green/yellow, light blue, brown, or light blue, black, brown; Four-core cable. green/yellow, light blue, black, brown, or light blue, black, brown, black or brown; Five-core cable. green/yellow, light blue, black, brown, black or brown, or light blue, black, brown, black or brown, black or brown; More than five-core cable. In the outer layer, a core is green/yellow, a core is light blue, the other core is the same color, but not green, yellow, Light blue or brown; on the other layers, one core is brown and the other cores are the same color, but not green, yellow, light blue or brown, or On the outer layer, one core is light blue, one core is brown, and the other core is the same color, but not green, yellow, light blue or brown; in its He layer, a core is brown, while the other core is the same color, but not green, yellow, light blue or brown. Various colors should be able to clearly identify and scratch. Should according to GB/T 5013.2-2008 test method specified in 1.8 test. 4.1.3 green/yellow combination color The color distribution of green/yellow combined color cores should meet the following conditions. GB/T 5013.1-2008/IEC 60245-1..2003 For each length of insulated wire core 15mm, one of the colors should cover at least 30% of the surface of the insulated wire core, and not more than 70% while the other color covers the rest of the insulated core. Note. For the case of using green/yellow combination colors and light blue colors Note. When green/yellow combination colors are specified as above, it is used exclusively for identification of connection ground or similar Insulation core for protection purposes. Light blue is used to identify the insulated core to which the neutral is connected. If there is no neutral, light blue can be used to identify the ground Or any insulated core other than the protective conductor. 4.2 insulated core digital identification 4.2.1 General requirements The core insulation should be of the same color and arranged in numerical order, except for the green/yellow core (if any). If a green/yellow insulated core, it should meet the requirements of 4.1.3, and should be placed on the outer layer. The numbers should start with the number 1 from the inner level. Digital Applications Arabic numerals are printed on the outer surface of the insulated core. The same number of colors and with a clear contrast with the color insulation, the number should be Legible. 4.2.2 mark the priority arrangement The digital marks shall be repeated at equal intervals along the insulated cores and the two adjacent complete digital marks shall be reversed to one another. When the sign is composed of a number, the dash should be placed below the number. If the logo is composed of two numbers, then one The numbers are placed under another number and the dash below the numbers below. The distance between two adjacent complete digital signage The arrangement of the signs is shown in Figure 1. Figure 1 digital signs arranged 4.2.3 Rub resistance Digital signs should be rub-resistant, should be GB/T 5013.2-2008 in 1.8 test to determine compliance with the requirements.

5 cable structure of the general requirements

5.1 Conductor 5.1.1 Materials Conductor should be annealed copper. Unless otherwise specified in the product standard (GB/T 5013.3, GB/T 5013.4, etc.), each conductor in the conductor Can be tin-plated or tin-plated copper wire. Tinned copper wire should be covered with a layer of effective tin. 5.1.2 Structure Unless otherwise specified in the relevant product standard, the maximum diameter of a conductor in a conductor shall comply with the requirements of GB/T 3956. Conductor types used for various types of cables can be found in the product standards (GB/T 5013.3, GB/T 5013.4, etc.). 5.1.3 Isolation between conductor and insulation Between the non-tinned conductor or tinned conductor and the insulation there may optionally be a barrier tape of a suitable material. 5.1.4 structural inspection Inspection of structures by inspection and measurement shall comply with the requirements of 5.1.1 and 5.1.2 and GB/T 3956. GB/T 5013.1-2008/IEC 60245-1..2003 5.1.5 resistance Unless otherwise specified in the relevant product standard (GB/T 5013.3, GB/T 5013.4, etc.), the conductor resistance per conductor at 20 ° C shall With GB/T 3956 for a variety of conductor requirements. Should be GB/T 5013.2-2008 in 2.1 test methods to check whether the requirements. 5.2 Insulation 5.2.1 Materials Insulation shall be vulcanized rubber mixture specified for each type of cable in product standards (GB/T 5013.3, GB/T 5013.4, etc.). Silicone rubber insulated cable --- IE2 type. Ethylene - vinyl acetate rubber mixture or equivalent insulated cable --- IE3 type. EPDM rubber or its equivalent material insulated cable --- IE4 type. The test requirements for these mixtures are given in Table 1. Note. Some of GB/T 5013.8 in the model XP1 cable insulation, the test requirements see the corresponding product standards. Cables insulated from any of the above insulation mixtures and included in the product standard (GB/T 5013.3, GB/T 5013.4, etc.) The highest working temperature, see the corresponding product standards. 5.2.2 clad conductor Insulation should be tightly wrapped in the conductor or the isolation layer. In the product standards (GB/T 5013.3, GB/T 5013.4, etc.) listed in each The type of cable, regardless of coating insulation is single or multi-layer, whether or not scraping tape around the package should be so. Insulation should be able to peel, but not Damaged insulation, conductors, or tin plating or metal plating (if any). Pass inspection and manual measurement to check compliance. 5.2.3 Thickness The average insulation thickness should not be less than the product standards (GB/T 5013.3, GB/T 5013.4, etc.) in the table listed in each type Number and specification of the specified value of the cable. However, the thickness at any point may be less than the specified value as long as it is not less than 90% -0.1 mm of the specified value. Should be GB/T 5013.2-2008 in 1.9 test methods to check whether the requirements. 5.2.4 Mechanical properties before and after aging Insulation should have sufficient mechanical strength and elasticity in the normal operating temperature range. Should be in accordance with the test specified in Table 1 to check whether the requirements. Applicable test methods and test requirements are shown in Table 1. Table 1 vulcanized rubber insulation non-electrical test requirements No. Test project unit Mixture type test method IE2 IE3 IE4 GB/T Article number 1 Tensile strength and elongation at break 2951.1-1997 9.1 1.1 delivery status of the original performance 1.1.1 Tensile strength of the original value --- Minimum median N/mm2 5.0 6.5 5.0 1.1.2 The original value of elongation at break --- Minimum Median% 150.200.200 1.2 air oven after aging performance 2951.1-1997 9.1 2951.2-1997 8.1 1.2.1 aging conditions a, b --- Temperature ℃.200 ± 2 150 ± 2 100 ± 2 --- Processing time h 10 × 24 7 × 24 7 × 24 1.2.2 Tensile strength after aging --- Minimum Median N/mm2 4.0 - 4.2 GB/T 5013.1-2008/IEC 60245-1..2003 Table 1 (continued) No. Test project unit Mixture type test method IE2 IE3 IE4 GB/T Article number --- Maximum rate of change c% - ± 30 ± 25 1.2.3 Elongation at break after aging --- Minimum middle value of 120 -.200 --- Maximum rate of change c% - ± 30 ± 25 1.3 omitted 1.4 air bombs after aging performance 2951.2-1997 8.2 1.4.1 Aging conditions a --- Temperature ℃ - 150 ± 3 127 ± 2 --- Processing time h - 7 × 24 40 1.4.2 Tensile strength after aging --- Minimum Median N/mm2 - 6.0 - --- Maximum rate of change c% - - ± 30 1.4.3 Elongation at break after aging --- Maximum rate of change c% - -30d ± 30 2 Thermal elongation test 2951.5-1997 Chapter 9 2.1 Test conditions --- Temperature ℃.200 ± 3.200 ± 3.200 ± 3 --- Processing time min 15 15 15 --- Mechanical stress N/mm2 0.20 0.20 0.20 2.2 test results --- Elongation under load, most Large value % 175 100 100 --- Elongation after cooling, most Large value % 25 25 25 3 high temperature pressure test see GB/T 2951.6-1997 Chapter 8 2951.6 3.1 Test conditions --- Pressure exerted by the blade - 8.1.4 - --- Heating time under load - 8.1.5 - --- Temperature ℃ - 150 ± 2 - 3.2 test results --- Depth of indentation depth, the most Large value % - 50 - 4 ozone resistance test 2951.5-1997 Chapter 8 4.1 Test conditions --- Test temperature ℃ - - 25 ± 2 --- Test time h - - 24 --- Ozone concentration% - - 0.025 ~ 0.030 4.2 test results no cracks a IE4 Insulation should be taken with a conductor or taken away no more than 30% of the copper wire aging. b Unless otherwise specified in the product standard, the aging of the eraser mixture is not forced by the forced draft oven. Arbitration test, you must use the old natural ventilation Boxes c Rate of change. the ratio of the median before aging to the median before aging to the median before aging, expressed as a percentage. d does not provide positive deviation. GB/T 5013.1-2008/IEC 60245-1..2003 5.3 fill 5.3.1 Materials Unless otherwise specified in the product standard (GB/T 5013.3, GB/T 5013.4, etc.), the packing shall consist of or consist of the following Material combination. --- vulcanized or non-vulcanized rubber mixture; or --- Natural or synthetic fibers; or ---paper. There should be no detrimental interaction between the components of the filling and the insulation and/or sheathing. 5.3.2 Cover For each type of cable, the product standard (GB/T 5013.3, GB/T 5013.4, etc.) provides for the presence or absence of filler Fill in between the cores (see 5.5.2). Fillers should fill the gaps between the insulated cores to form a substantially circular cable core. Filler should be able to peel without damage to the insulated core. The cable core and packing can be tied together with a film or tape. 5.4 Spinning weaving 5.4.1 Materials The yarn for the spunbond braid shall be the material required for each type of cable in the product standard (GB/T 5013.3, GB/T 5013.4, etc.). Where a braid is specified in the product standard, the braided yarn can be either natural (cotton yarn, treated cotton yarn, silk) or synthetic (human Rayon, polyamide, etc.) or also filaments of glass fibers or comparable materials. 5.4.2 coating Weave should be uniform, no knot or gap. In order to prevent abrasion of the braid made of glass fiber yarns, a suitable material should be used deal with. 5.5 jacket 5.5.1 Materials Sheathing material shall be a vulcanized rubber specified for each type of cable in the product standard (GB/T 5013.3, GB/T 5013.4, etc.) Skin mixture. Rubber mixture sheath cable --- SE3 type. Neoprene mixture or other equivalent synthetic elastomer sheath cable --- SE4 type. The test requirements of these mixtures are shown in Table 2. Note. Some of GB/T 5013.8 of the cable, the type of sheathing material SX1 requirements see product standards. 5.5.2 Cover The protective sheath for each type of cable specified in the product standard (GB/T 5013.3, GB/T 5013.4, etc.) shall consist of a single or double (Inner or sheath and outer or sheath). 5.5.2.1 Single-layer sheath Sheath should be covered by a single layer. --- Single-core cable, coated on the insulated core; --- Multi-core cable, wrapped in a cable core and filler. Multi-core cable sheath should be able to peel without damaging the cable core. Under the sheath can be wrapped around a layer of tape or film. In some cases, it is indicated in product standards (GB/T 5013.3, GB/T 5013.4, etc.) that the sheath can be inserted between the cable cores Gap formation and filling (see 5.3.2). 5.5.2.2 double jacket Inner layer The inner sheath should be extruded as specified in 5.5.2.1.Outside the inner sheath can be wrapped around a layer of scraping tape or equivalent tape. For bands or separators (if any) with a thickness not exceeding 0.5 mm, it may be included in the thickness measurement of the inner sheath as long as the tape is bonded GB/T 5013.1-2008/IEC 60245-1..2003 Inner jacket. Outer layer Outer layer or sheath should be wrapped outside the inner sheath or tape. It can stick to the inner jacket or wrap, it can not stick. If the outer cover adheres to the inner cover, it should be clearly distinguishable from the inner cover; if not, it should be easily separated from the inner cover. 5.5.3 Thickness The average thickness of the sheath should not be less than the product standards (GB/T 5013.3, GB/T 5013.4, etc.) in the table listed in each model And the specification cable specification. Unless otherwise specified, the thickness at any point may be less than the specified value, as long as not less than the specified value of 85% -0.1mm. Should be GB/T 5013.2-2008 in the test method specified in 1.10 to check whether the standard requirements. Note. In Appendix B is given GB/T 5013.4 60245IEC 53,60245IEC 57,60245IEC 66 three types of cable sheath thickness gauge Count method. 5.5.4 Mechanical properties before and after aging Sheathing should have adequate mechanical strength and resiliency within the normal operating temperature range. Should be in accordance with the provisions of Table 2 test to check whether the requirements. Applicable test methods and test requirements are shown in Table 2. Table 2 vulcanized rubber sheath non-electrical test requirements No. Test project unit Mixture type test method SE3 SE4 GB/T Article number 1 Tensile strength and elongation at break 2951.1-1997 9.2 1.1 delivery status of the original performance 1.1.1 Tensile strength of the original value --- Minimum median N/mm2 7.0 10.0 1.1.2 The original value of elongation at break --- Minimum median of 300 300 1.2 air oven aging performance 2951.2-1997 8.1.3.1 1.2.1 Aging conditions --- Temperature ℃ 70 ± 2 70 ± 2 --- Processing time h 10 × 24 10 × 24 1.2.2 Tensile strength after aging --- Minimum Median N/mm2 - - --- The maximum rate of change a% ± 20 -15b 1.2.3 Elongation at break after aging --- Minimum Median% 250 250 --- The maximum rate of change a% ± 20 -25b 1.3 Immersed mineral oil after the mechanical properties 2951.5-1997 10 1.3.1 Test conditions --- Oil temperature ℃ - 100 ± 2 --- Oil immersion time h - 24 1.3.2 after immersion oil tensile strength --- Maximum rate of change a% - ± 40 1.3.3 oil elongation after fracture --- Maximum rate of change a% - ± 40 2 Thermal elongation test 2951.5-1997 9 2.1 Test conditions --- Temperature ℃.200 ± 3.200 ± 3 --- Processing time min 15 15 --- Mechanical stress N/mm2 0.20 0.20 GB/T 5013.1-2008/IEC 60245-1..2003 Table 2 (continued) No. Test project unit Mixture type test method SE3 SE4 GB/T Article number 2.2 test results --- Elongation under load, most Large value % 175 175 --- Elongation after cooling, most Large value % 25 25 3 low temperature bending test 2951.4-1997 8.2 3.1 Test conditions --- Temperature ℃ - -35 ± 2 --- Apply low temperature time - see GB/T 2951.4 -1997 in 8.2.3 3.2 test results no cracks 4 low temperature tensile test 2951.4-1997 8.4 4.1 Test conditions --- Temperature ℃ - -35 ± 2 --- Apply low temperature time - see GB/T 2951.4 -1997 in 8.4.4 4.2 test results --- Not the elongation at break, the most Small value % - 30 a Rate of change. The ratio of the median before aging to the median before aging to the median before aging, expressed as a percentage. b does not provide positive deviation. 5.6 finished cable test 5.6.1 Electrical performance Cable should have sufficient dielectric strength and insulation resistance. Should be in accordance with the provisions of Table 3 test to check whether the requirements. Test methods and test requirements shown in Table 3. 5.6... ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.


      

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