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TB/T 1484.4-2010 PDF English

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TB/T 1484.4-2010: Specification for cables on board rolling stock - Part 4: Zero halogen low smoke and flame retardant cables for communication networks
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GB/T 6770   GB/T 21561.3   TB/T 1484.2   

TB/T 1484.4-2010: Specification for cables on board rolling stock - Part 4: Zero halogen low smoke and flame retardant cables for communication networks


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TB RAILWAY INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 29.280 S 35 Replacing TB/T 1484.3-2001 Specification for cables on board rolling stock - Part 4. Zero halogen low smoke and flame retardant cables for communication networks Issued on: AUGUST 22, 2010 Implemented on: FEBRUARY 01, 2011 Issued by. Ministry of Railways of the People’s Republic of China

Table of Contents

Foreword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Operating characteristics ... 5 4 Model, category, specification and indication method of product ... 5 5 Technical requirements and test methods ... 7 6 Inspection rules and test ... 13 7 Delivery conditions ... 14 Annex A (Normative) Diagram of Arrangement of end-A of Cable-core ... 16

Foreword

TB/T 1484 Cables on board rolling stock is divided into the following parts. - Part 1. Standard wall insulation cables up to AC 3 kV; - Part 2. Thin wall insulation cables; - Part 3. 30 kV Ethylene propylene rubber insulation single-phase electric power cables; - Part 4. Low-smoke halogen-free flame retardant cables for communications and network. This Part is Part 1 of TB/T 1484. This Part is drafted according to the rule in GB/T 1.1-2009. This Part replaces TB/T 1484.3-2001 TB/T 1484.3-2001 Specification for railway locomotive and vehicle cables for booking - Part 3. 30 kV Ethylene propylene rubber insulation single-phase electric power cables. Compared with TB/T 1484.3-2001, the main technical changes of this Part are as follows. — Add toxicity test and other chemical analysis method (see 5.12.4); — Add model/name/specification and structure (see Chapter 4). This Part was proposed by and shall be under the jurisdiction of CSR Zhuzhou Institute Co., Ltd. This Part is drafted by CSR Zhuzhou Institute Co., Ltd., Railway Products Quality Supervision and Inspection Center AND Zhongtian Technology Co., Ltd. Drafters of this Part. LIU Zhongxiu, TIAN Yongping and LIANG Bin The old editions replaced by this Part are as follows. — TB/T 1484-1983; — TB/T 1484.3-2001. Specification for Cables on Board Rolling Stock – Part 4. Zero Halogen Low Smoke and Flame Retardant Cables for Communication Networks

1 Scope

This Part specifies the structure, technical requirements, test methods and inspection rules of cables for communication networks on board rolling stock (including CRH train). The products that this Part specifies are applicable to rolling stock (including CRH train), and also applicable to the data transmission between other railway vehicles.

2 Normative references

The following documents are indispensable for application of this document. For the dated documents so quoted, only the dated versions apply to this document. For the undated documents so quoted, the latest versions (including all modification sheets) apply to this document. GB/T 2951.1-1997 Common test methods for insulating and sheathing materials of electric cables Part 1. Methods for general application Section one. Measurement of thickness and overall dimensions - Tests for determining the mechanical properties (idt IEC60811-1-1.1993) GB/T 2951.2-1997 Common test methods for insulating and sheathing materials of electric cables - Part 1. Methods for general application - Section two. Thermal ageing methods (idt IEC 60811-1-2.1985) GB/T 2951.3-1997 Common test methods for insulating and sheathing materials of electric cable - Part 1. Methods for general application - Section three. Methods for determining the density - Water absorption tests - Shrinkage test (idt IEC 60811-1-3.1993) GB/T 2951.4-1997 Common test methods for insulating and sheathing materials of electric cables - Part 1. Methods for general application (idt IEC 60811-1-4.1985) GB/T 3048.8 Test methods for electrical properties of electric cables and wires - Part 8. AC voltage test GB/T 3048.9 Test methods for electrical properties of electric cables and wires - Part 9. Spark test of insulated cores GB/T 4909.3 Test methods for bare wires - Part 3. Tensile test GB/T 4910-2009 Tinned round copper wire GB/T 6995.2 Markings for electric wires and cables - Part 2. Standard colours GB/T 8969 Air quality - Determination of nitrogen oxides in ambient air - Griess-saltzman method GB/T 8970 Air quality - Determination of sulfur dioxide in a ambient air - Tetrachlomercurate (TCM), pararosaniline GB/T 16033 Workplace air - Determination of hydrogen cyanide and cyanides - Sodium isonicotinate-sodium barbiturate spectrophotometric method GB/T 17650.2-1998 Test on gases evolved during combustion of materials from cables - Part 2. Determination of degree of acidity of gases by measuring pH and conductivity (idt IEC 60754- 2.1991) GB/T 17651.1-1998 Measurement of smoke density of cables burning under defined conditions - Part 1. Test apparatus (idt IEC 61034-1.1997) GB/T 17651.2-1998 Measurement of smoke density of cables burning under defined conditions - Part 2. Test procedure and requirements (idt IEC 61034-2.1997) GB/T 18015-2007 Multicore and symmetrical pair/quad cables for digital communications GB/T 18204.23 Methods for determination of carbon monoxide in air - Gas chromatographic method GBIT 18204.24 Methods for determination of carbon dioxide in air - Gas chromatographic method GB/T 19666-2005 Flame retardant and fire resistant wires and cables General JB/T 8137 Delivery drums for wires and cables IEC 60189-1 Low-frequency cables and wires with PVC insulation and PVC sheath - Part 1. General test and measuring methods IEC 60708 Low-frequency cables with polyolefin insulation and moisture barrier polyolefin sheath IEC 61156 Multicore and symmetrical pair / quad cables for digital communications IEC 62153-4-3.2006 Metallic communication cable test methods - Part 4-3. Electromagnetic compatibility (EMC) - Surface transfer impedance - Triaxial method EN 50305.2002 Railway applications - Railway rolling stock cables having special fire performance - Test methods

3 Operating characteristics

3.1 Working frequency of cable. maximum 20 MHz. 3.2 Working temperature of cable. -40°C ~ +85°C. 3.3 Allowable bending radius of cable. for fixed laying, it is 3 times of the external diameter of cable; for unfixed laying, it is 5 times of the external diameter of cable. 3.4 It shall be used in the place where there is no mineral oil and fuel pollution.

4 Model, category, specification and indication method of product

4.1 Model 4.1.1 The model of cable is composed of model code and specification code. 5.8.4 Non-hygroscopic non-metal rip-rope shall be placed under sheath. 5.9 Manufacturing length of cable The manufacturing length of cable shall be the integer-multiples of 100 m~110 m. 5.10 Electrical properties of cable 5.10.1 General For electrical properties, please refer to Table 7. Table 7 Electrical Properties (20°C) SN Item Unit Specification of conductor mm2 Test method Conversion formula 0.50 0.75 1.0 1.5 1 Direct-current resistance of single conductor R≤ Ω/100 m 3.96 2.60 1.95 1.33 GB/T 3048.4 Measured value /L 2 Pair direct-current resistance unbalance ᇞR % 3 IEC 60708-1 — Insulated dielectric strength, AC 50 Hz 5 min, Not break down Between conductors Conductor and shield kV 1.5 1.5 Insulation resistance ≥ Between pairs Between line-core and shield Between pair shield and cable-core shield mΩ· km GB/T 3048.6 Measured value×L×0. Working capacitance Cm≤ MVB 1.5 MHz WTB 1.0 MHz nF/100 m 4.6 6.5 IEC 60189-1 Measured value /L Shield capacity unbalance, ᇞCm< MVB 1.5 MHz WTB 1.0 MHz pF/100 m IEC 60189-1 Measured value /L Transfer impedance < MVB 20 MHz WTB (differential transfer impedance) mΩ/m IEC 62153-4-3 — Attenuation≤ MVB 1.5 MHz 3.0 MHz MTB 1.0 MHz 2.0 MHz dB/100 m 1.5 2.0 1.0 1.4 GB/T 18015.1 Measured value×L×0. Near-end crosstalk attenuation ≥ MVB(0.75 MHz-3.0 MHz) WTB (0.5 MHz~2.0 MHz) dB GB/T 18015.1 — Characteristic impedance MVB (0.75MHz~3.0MHz sinusoidal signal) WTB (0.5 MHz~2.0MHz sinusoidal signal) 120.0 × (1 ±10% ) 120.0 × (1 ± 10% ) GB/T 18015.1 — 11 Phase-shift constant≤ (0.5 MHz~3.0 MHz sinusoidal signal) rad/m 0.087 5 IEC 61156 Measured value /L 12 Insulated line-core broken or mixed Cable not broken or mixed Multimeter or indicator-light — 13 Continuity of aluminum plastic composite tape Continuous electrically Multimeter or indicator-light — Note. L in the table is the actually measured length, unit. 100 m. 4.1 Elongation at break of conductor 5.1.3 T 4.2 Insulation tensile strength and elongation at break 5.2.3 T 4.3 Insulation thermal shrinkage test 5.2.3 T 4.4 Winding test after insulation thermal aging 5.2.3 T 4.5 Insulation low temperature winding test 5.2.3 T 4.6 Mechanical and physical properties of cable sheath 5.8.1 T 4.7 Low temperature bending tes... ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.


      

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