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Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is developed in accordance with the rules given in GB/T 1.1-2009. This standard replaces YD/T 769-2010 Central tube type of outdoor optical fiber cables for telecommunications. The following main technical changes have been made with respect to YD/T 769-2010: ——The standard name is modified; ——The codes and structural types of plastic sheaths with parallel reinforcing members are added, and the structural types and related technical contents of metal loose tube are added (see 3.1, 3.2.1, 4.1.2.3.4, 4.1.5.3, Annexes A and B hereof); ——The relevant technical contents of non-metal fibre reinforced-polyethylene bonded sheath structure are deleted, and the contents of grading tensile items of mechanical properties according to core network and access network are deleted (see 3.1, 3.2.1, 4.1.3.3, 4.1.4, 4.1.5.1.1, 4.1.5.4, Annexes A and B, Table 3 of 2010 edition); ——The relevant technical contents of gel-free type are deleted (see 3.2.1, 4.1.2.1, 4.1.2.3. 5, Annexes A and B of 2010 edition); ——The nominal outer diameter of loose tube is modified to 1.8mm~8.0mm, and the tolerance between nominal outer diameter and nominal thickness of loose tube are modified (see 4.1.2.3.4 and Table 9 hereof; 4.1.2.3.3 and Table 8 of 2010 edition); ——The nominal thickness of polyethylene sheath is modified to be 1.6mm, the minimum thickness shall not be less than 1.3mm, and the average thickness on any cross section shall not be less than 1.4mm; the thickness requirements of polyethylene sheath in Type 53 oversheath are added (see 4.1.5.5 hereof; 4.1.5.5 of 2010 edition); ——The structural description of flame retardant optical fibre cable is added, the index of flame retardant polyolefin is modified, and the combustion property requirements of flame retardant optical fibre cable are modified (see 4.1.5.8, 4.4.2.4 and 4.4.4.9 hereof; 4.4.2.4 and 4.4.4.8 of 2010 edition); ——The requirements of peeling strength of metal composite tape are deleted (see 4.4.2.2 of 2010 edition); ——The requirements for the allowable minimum bending radius for optical fibre cables with non-metal reinforcements without oversheath or with Type 04 oversheath are added (see Table 4 hereof); ——The requirements for the limit of restricted substances are modified (see 4.4.5 hereof; 4.4.5 of the 2010 edition); ——The test method for wiping optical fibre cable marks, and the requirements of imprinted markings and spray printed markings are specified respectively (see 5.3.1 hereof; 5.3.1 of 2010 edition); ——The impact cylinder is modified to the impact sphere, and the impact times are modified to be 1 at each of at least 5 times with an interval of 500mm (see 5.5.4 hereof; 5.5.4 of 2010 edition); ——The determination of sheath depression of W-sheathed and P-sheathed optical fibre cable in torsion test (see 5.5.6 hereof); ——The applicable laying modes and special conditions for rat damage are added (see Annex A hereof). This standard was proposed by and is under the jurisdiction of China Communications Standards Association. This standard was firstly issued in 1995, firstly revised in 2003, secondly revised on 2010, and this is the second revision. Central gel-filled loose tube optical fibre cables for outdoor application for telecommunication 1 Scope This standard specifies the product classification and designation, requirements, test methods, inspection rules, packaging, transportation and storage of central gel-filled loose tube optical fibre cables for outdoor application for telecommunication (hereinafter referred to as “optical fibre cables”). This standard is applicable to duct, directly buried, tunnel (channel), lashed aerial and other normally laid central gel-filled loose tube optical fibre cables for outdoor application for telecommunication. This standard is not applicable to micro optical fibre cables and gel-free optical fibre cables laid by air blowing. 2 Normative references The following referenced documents are indispensable for the application of this standard. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies. GB/T 2951.11-2008 Common test methods for insulating and sheathing materials of electric cables and optical cables—Part 11: Methods for general application—Measurement of thickness and overall dimensions—Tests for determining the mechanical properties (IEC 60811-1-1: 2001, IDT) GB/T 2952 (All parts) Protective coverings for electric cables GB/T 3280 Cold rolled stainless steel plate, sheet and strip GB/T 4240 Stainless steel wires GB/T 6995.2-2008 Markings for electric wires and cables—Part 2: Standard colours GB/T 7424.2-2008 Optical fibre cable generic specification—Part 2: Basic optical cable test procedures (IEC 60794-1-2: 2003, MOD) GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgment of limiting values GB/T 9771 (All parts) Single-mode optical fibres for telecommunication GB/T 15065 Black polyethylene compounds for wire and cable GB/T 15972.20 Specifications for optical fibre test methods—Part 20: Measurement methods and test procedures for dimensions—Fiber geometry (GB/T 15972.202008, IEC 60793-1-20: 2001, MOD) GB/T 15972.21 Specifications for optical fibre test methods—Part 21: Measurement methods and test procedures for dimensions—Coating geometry (GB/T 15972.212008, IEC 60793-1-21: 2001, MOD) GB/T 15972.22 Specifications for optical fibre test methods—Part 22: Measurement methods and test procedures for dimensions—Length measurement (GB/T 15972.22-2008, IEC 60793-1-22: 2001, MOD) GB/T 15972.40 Specifications for optical fibre test methods—Part 40: Measurement methods and test procedures for transmission and optical characteristics—Attenuation (GB/T 15972.40-2008, IEC 60793-1-40: 2001, MOD) GB/T 15972.42 Specifications for optical fibre test methods—Part 42: Measurement methods and test procedures for transmission and optical characteristics—Chromatic dispersion (GB/T 15972.42-2008, IEC 60793-1-42: 2001, MOD) GB/T 15972.44 Specifications for optical fibre test methods—Part 44: Measurement methods and test procedures for transmission and optical characteristics—Cut-off wavelength (GB/T 15972.44-2008, IEC 60793-1-44: 2001, MOD) GB/T 15972.45 Specifications for optical fibre test methods—Part 45: Measurement methods and test procedures for transmission and optical characteristics—Mode field diameter (GB/T 15972.45-2008, IEC 60793-1-45: 2001, MOD) GB/T 15972.48-2016 Specifications for optical fibre test methods—Part 48: Measurement methods and test procedures for transmission and optical characteristics—Polarization mode dispersion (IEC 60793-1-48: 2007, NEQ) 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 (IEC 60754-1: 1994, IDT) GB/T 17651-1998 (All parts) Measurement of smoke density of cables burning under defined conditions (idt IEC 61034: 1997) GB/T 18380.12-2008 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 1kW pre-mixed flame (IEC 60332-1-2: 2004, IDT) GB/T 24202 Carbon steel wire for optical fiber cable tension members GB/T 26125-2011 Electrical and electronic products—Determination of six regulated substances (lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers) (IEC 62321: 2008, IDT) GB/T 26572 Requirements of concentration limits for certain restricted substances in electrical and electronic products YD/T 629 (All parts) Monitoring method of attenuation changes in optical fiber transmission YD/T 723.2-2007 Laminated metal plastic strip for communication cable and optical fibre cable—Part 2: Laminated aluminium plastic strip YD/T 723.3-2007 Laminated metal plastic strip for communication cable and optical fibre cable—Part 3: Laminated steel plastic strip YD/T 837.1~837.5-1996 Test method of copper-core, polyolefin insulated, composite aluminum-plastic sheathed cables for urban local communications YD/T 839.2-2014 Filling compounds and flooding compounds for telecommunication cable and optical fibre cable—Part 2: Filling compounds for optical fibre YD/T 839.3-2014 Filling compounds and flooding compounds for telecommunication cable and optical fibre cable—Part 3: Filling compounds for cable YD/T 908-2011 The naming rules for type of optical fibre cables YD/T 1020 (All parts) Characteristics of termite resistant jacketing materials for electrical cable and optical cable YD/T 1065.2-2015 Test methods for polarization mode dispersion of single-mode optical fibres—Part 2: Statistical calculation methods of link polarization mode dispersion (PMDQ) YD/T 1113 Low-smoke halogen-free compounds for telecommunication cable and optical fibre cable YD/T 1115 (All parts) Waterblocking materials for telecommunication cable and optical fiber cable—Part1: Waterblocking tape YD/T 118.1 Secondary coating materials used for optical fiber—Part 1: Polybutylene terephthalate YD/T 1118.2 Secondary coating materials used for optical fiber—Part 2: Modified propyleneresin YD/T 1118.3 Secondary coating materials used for optical fibre—Part3: Modified polycarbonate YD/T 1181.1 Characteristics of non-metal reinforcement used for optical cable—Part 1: Glass fiber reinforced plastic rods YD/T 1181.2 Characteristics of non metal reinforcement for optical fiber cables—Part 2: Aramid yarne YD/T 1181.3 Characteristics of non-metal reinforcement for optical fiber cables—Part 3: Aramid fiber reinforced plastic rods YD/T 1181.4 Characteristics of non-metal reinforcement for optical fiber cables—Part 4: Glass fiber yarns JB/T 8137-1999 (All parts) Delivery drums for wires and cables—Part 1: General specifies 3 Product classification 3.1 General The optical fibre cable specified in this standard is the central gel-filled loose tube optical fibre cables for outdoor application, and the central tube shall be continuously filled with fibre paste, and the water blocking structure characteristics of optical fibre cable are gel filled. The optical fibre cables have their types, specifications and compilation models classified in accordance with YD/T 908-2011. Where, the following provisions are added to the codes related to sheaths: W——Steel-plastic bonded sheath with parallel reinforcing member; P——Plastic sheath with parallel reinforcing member. Note: P means parallel. 3.2 Types 3.2.1 Basic structure type and name of optical fibre cable The basic structure type and name of optical fibre cable are as follows: ● GYXTW—Central gel-filled tube steel-polyethylene bonded sheathed optical fibre cable for outdoor application for telecommunication with metal reinforcing member and parallel steel wire; ● GYXTZW—Central gel-filled tube steel-flame retardant polyethylene bonded sheathed optical fibre cable for outdoor application for telecommunication with metal reinforcing member and parallel steel wire; ● GYXTWH—Center gel-filled tube steel-low smoke halogen-free bonded sheathed optical fibre cable for outdoor application for telecommunication with metal reinforcing member and parallel steel wire; ● GYXTW53—Central gel-filled tube steel-polyethylene bonded sheathed, longitudinal corrugated steel tape armored and polyethylene jacketed optical fibre cable for outdoor application for telecommunication with metal reinforcing member and parallel steel wire; ● GYMXTP—Metal central gel-filled tube polyethylene sheathed optical fibre cable for outdoor application for telecommunication with metal reinforcing member and parallel steel wire; ● GYMXTY—Metal center gel-filled tube polyethylene sheathed optical fibre cable for outdoor application for telecommunication with metal reinforcing member; ● GYXTY—Central gel-filled tube polyethylene sheathed optical fibre cable for outdoor application for telecommunication with metal reinforcing member; ● GYXTZY—Central gel-filled tube flame retardant polyethylene sheathed optical fibre cable for outdoor application for telecommunication with metal reinforcing member; ● GYXTH—Center gel-filled tube low smoke halogen-free sheathed optical fibre cable for outdoor application for telecommunication with metal reinforcing member; ● GYFXTY—Central gel-filled tube polyethylene sheathed optical fibre cable for outdoor application for telecommunication with non-metal reinforcing member; ● GYXTS—Central gel-filled tube steel-polyethylene bonded sheathed optical fibre cable for outdoor application for telecommunication with metal reinforcing member; ● GYXTZS—Central gel-filled tube flame retardant polyethylene sheathed optical fibre cable for outdoor application for telecommunication with metal reinforcing member; ● GYXTA—Central gel-filled tube aluminum-polyethylene bonded sheathed optical fibre cable for outdoor application for telecommunication with metal reinforcing member; ● GYXTZA—Central gel-filled tube aluminum-flame retardant polyethylene sheathed optical fibre cable for outdoor application for telecommunication with metal reinforcing member; 3.2.2 Applicable occasions of main types See Annex A for applicable laying modes and special conditions for main types and derived types of optical fibre cables. 3.3 Specifications 3.3.1 The optical fibres in optical fibre cables shall be of Class B1.1 (dispersion unshifted single-mode optical fibre), Class B1.2 (cut-off wavelength shifted single-mode optical fibre), Class B1.3 (extended wavelength band dispersion unshifted single-mode optical fibre), Class B4 (non-zero dispersion shifted single-mode optical fibre) and Class B6 (bending insensitive single-mode optical fibre) meeting those specified in GB/T 9771, or other applicable classes of single-mode optical fibre as requested by users. 3.3.2 The number of optical fibres in an optical fibre cable should be 2~144, which may also be required by users. 3.4 Product models The model of optical fibre cable consists of the type and specification code of optical fibre cable, which are separated by a space. 3.5 Product marking When processing and ordering, the designation of optical fibre cable product shall be marked, which consists of the model of the optical fibre cable and number of this standard. Example 1: The central gel-filled tube steel-polyethylene bonded sheathed optical fibre cable for outdoor application for telecommunication with metal reinforcing member and parallel steel wire, which includes 24 Class B1.3 single-mode optical fibres, is designated as: GYXTW 24B1.3 YD/T 769-2018 Example: The metal center gel-filled tube polyethylene sheathed optical fibre cable for outdoor application for telecommunication with metal reinforcing member, which includes 24 Class B1.3 single-mode optical fibres, is designated as: GYMXTY 24B1.3 YD/T 769-2018 4 Requirements 4.1 Structure 4.1.1 General 4.1.1.1 Optical fibre cables shall consist of optical fibres, central tubes, reinforcing members, water blocking materials and protective layers which include sheath and, where possible, oversheath. Annex B gives some examples of typical optical fibre cable structures. Other structures that meet the mechanical, environmental and transmission performance requirements specified in this standard may also be adopted. 4.1.1.2 The structures of optical fibre cables shall be a full-section water blocking structure, that is, water shall not seep longitudinally in the cable core and protective layer. 4.1.1.3 The optical fibre cables of the same batch, type and specification shall have the same structural arrangement and the same identification chromatogram. 4.1.2 Cable core 4.1.2.1 General The cable core is a central tube consisting of multi-core communication single-mode fibre or other applicable types of optical fibre as required by the user, and the tube is continuously filled with a thixotropic fibre paste. 4.1.2.2 Optical fibre 4.1.2.2.1 The optical fibre cables should be composed of the same type of coated single-mode optical fibre for communication or other applicable classes of optical fibres required by the user, and the number of cores shall meet the requirements of optical fibre cable specifications. The same lot of optical fibre cables shall use optical fibres manufactured with the same design, materials and processes. 4.1.2.2.2 The surface of optical fibre coating layer shall be provided with full-color code, and its color shall conform to GB/T 6995.2-2008, and shall not fade or migrate. It is allowed to use optical fibre natural color instead of white color. 4.1.2.2.3 The property of single-mode optical fibre used for cabling shall comply with relevant requirements of GB/T 9771. 4.1.2.3 Central tube 4.1.2.3.1 The central tube types include plastic loose tube and metal loose tube, which provide mechanical buffer protection for coated optical fibres. 4.1.2.3.2 The plastic loose tube may be made of polybutylene terephthalate (PBT), polypropylene (PP), polycarbonate (PC) or other applicable plastics, and the properties of PBT, PP and PC shall comply with YD/T 1118.1, YD/T 1118.2 and YD/T 1118.3 respectively; metal loose tube material may be stainless steel strip or other applicable metal materials, and the property of stainless steel strip shall comply with GB/T 3280. 4.1.2.3.3 When the number of optical fibre cores does not exceed 12, the optical fibre in the tube shall be identified by full chromatography, and its color shall be selected according to those specified in Table 1. Under the condition of not affecting the identification, it is allowed to use the natural color of optical fibre instead of the white color. When the number of optical fibres exceeds 12, the optical fibres shall be bundled or color rings shall be added on the surface of the optical fibres to distinguish them. For bundled optical fibres, colored binding yarns shall be used to distinguish whose colors shall be selected from Table 1. Table 1 Full chromatogram for identification S.N. 1 2 3 4 5 6 7 8 9 10 11 12 Color Blue Orange Green Brown Grey White Red Black Yellow Purple Pink Turquoise 4.1.2.3.4 Sufficient space between the central tube and the optical fibre shall be provided, and there shall be a certain structural stability between the central tube and the optical cable sheath to avoid the withdrawal of the central tube and ensure the temperature performance of the optical cable. Where: ● The nominal outer diameter of the plastic loose tube should be 1.8 to 8.0mm, the thickness shall increase with the increase of outer diameter, its nominal value should be 0.3 to 1.2mm, and its tolerance shall meet the following requirements: ——When the nominal outer diameter is 1.8mm to 4.0mm (including 4.0mm), the tolerance of nominal outer diameter is ±0.10mm and the tolerance of thickness is ±0.05mm; ——When the nominal outer diameter is 4.0mm to 8.0mm, the tolerance of nominal outer diameter is ±0.20mm and the tolerance of thickness is 0.10mm. ● The nominal outer diameter of the metal loose tube should be 1.5 to 6.0mm, and its tolerance shall be ±0.10mm; the thickness shall increase with the increase of thickness. Its nominal value should be 0.15mm to 0.30mm, and the tolerance should be 0.05mm. In addition, the nominal dimension of loose tube may change with the number of optical fibre cores in the tube, and other nominal dimensions required by the user are allowed. 4.1.2.3.5 The excess length of the optical fibre in the central tube shall be uniform and stable, so that the tensile properties and attenuation temperature characteristics of the optical fibre cables can meet the requirements of this standard. 4.1.2.3.6 The gap in the central tube shall be continuously filled with a thixotropic fibre paste. The fibre paste shall be compatible with other optical fibre cable materials in contact with it, and will not damage the transmission characteristics and service life of the optical fibre. The fibre paste shall comply with the requirements of YD/T 839.2-2014, and the fibre paste used for metal loose tubes shall be hydrogen-absorbing fibre paste. 4.1.3 Reinforcing members 4.1.3.1 The reinforcing member shall be in the sheath or outside the central pipe in the sheath, which can either be metal or non-metal. These reinforcing members shall have enough cross section, Young's modulus and elastic strain range to make the tensile properties and attenuation temperature characteristics of optical fibre cables conform to the requirements of this standard. 4.1.3.2 The high-strength single round steel wire shall be used for metal reinforcing members, and phosphatized steel wire or stainless steel wire should be used for high-strength steel wire. When the central tube is a metal loose tube, galvanized steel wire can also be used. The surface of steel wire shall be round and smooth. The Young's modulus of phosphatized steel wire and galvanized steel wire shall be not less than 190GPa, and other properties shall meet the requirements of GB/T 24202. The stainless steel wire shall meet the requirements of GB/T 4240; Single round steel wire shall not have any splice within the manufacturing length of optical fibre cable. 4.1.3.3 The non-metal fibre reinforced plastic rods should be used for non-metal reinforcing members, including glass fibre reinforced plastic (GFRP) rods, kevlar fibre reinforced plastic (KFRP) rods and basalt fibre reinforced plastic (BFRP) rods. The GFRP property shall meet the requirements of YD/T 1181.1, the KFRP property shall meet the requirements of YD/T 1181.3, and the BFRP property shall meet the requirements of YD/T 1181.5. Other appropriate non-metal reinforcing members may be used, such as kevlar yarn, glass fibre yarn or non-metal fibre reinforced plastic tape. The kevlar yarn shall meet the requirements of YD/T 1181.2 and the glass fibre yarn shall meet the requirements of YD/T 1181.4. GFRP, KFRP, BFRP and non-metal fibre reinforced plastic tape cannot be spliced within the manufacturing length of optical fibre cable, and each bundle of kevlar yarns or glass fibre yarn is allowed to have one splice, but only one splice is allowed to be used within any 200m optical fibre cable length. Foreword i 1 Scope 2 Normative references 3 Product classification 3.1 General 3.2 Types 3.3 Specifications 3.4 Product models 3.5 Product marking 4 Requirements 4.1 Structure 4.2 Length 4.3 Marking 4.4 Performance requirements 5 Test methods 5.1 General 5.2 Inspection of optical fibre cable structure 5.3 Inspection of optical fibre cable markings 5.4 Inspection of optical fibre cable length 5.5 Mechanical properties test on optical fibre cables 5.6 Environmental properties test on optical fibre cables 6 Inspection rules 6.1 General provisions 6.2 Terms of inspection 6.3 End-of-manufacturing inspection 6.4 Type inspection 7 Packaging, transportation and storage 7.1 Packaging 7.2 Transportation and storage 8 Instructions for use Annex A (informative) Applicable laying modes and special conditions for main types Annex B (informative) optical fibre cable cross sections of several typical central tube structures Annex C (normative) Characteristic requirements of single-mode optical fibre in optical fibre cable 通信用中心管填充式室外光缆 1 范围 本标准规定了通信用中心管填充式室外光缆(以下简称光缆)的产品分类与命名、要求、试验方法、检验规则、包装、运输和贮存。 本标准适用于管道、直埋、隧道(通道)、非自承式架空等常规敷设方式的通信用中心管填充式室外光缆。 本标准不适用于气吹敷设的微型光缆和全干式光缆。 2 规范性引用文件 下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件,仅注日期的版本适用于本文件。凡是不注日期的引用文件,其最新版本(包括所有的修改单)适用于本文件。 GB/T 2951.11—2008 电缆和光缆绝缘和护套材料通用试验方法 第11部分:通用试验方法 厚度和外形尺寸测量 机械性能试验(IEC 60811-1-1:2001,IDT) GB/T 2952 (所有部分)电缆外护层 GB/T 3280 不锈钢冷轧钢板和钢带 GB/T 4240 不锈钢丝 GB/T 6995.2—2008 电线电缆识别方法 第2部分:标准颜色 GB/T 7424.2—2008 光缆总规范 第2部分:光缆基本试验方法(IEC 60794-1-2:2003,MOD) GB/T 8170—2008 数值修约规则与极限数值的表示和判定 GB/T 9771 (所有部分)通信用单模光纤 GB/T 15065 电线电缆用黑色聚乙烯塑料 GB/T 15972.20 光纤试验方法规范 第20部分:尺寸参数的测量方法和试验程序—光纤几何参数(GB/T 15972.20—2008,IEC 60793-1-20:2001,MOD) GB/T 15972.21 光纤试验方法规范 第21部分:尺寸参数的测量方法和试验程序—涂覆层几何参数(GB/T 15972.21—2008,IEC 60793-1-21:2001,MOD) GB/T 15972.22 光纤试验方法规范 第22部分:尺寸参数的测量方法和试验程序—长度(GB/T 15972.22—2008,IEC 60793-1-22:2001,MOD) GB/T 15972.40 光纤试验方法规范 第40部分:传输特性和光学特性的测量方法和试验程序—衰减(GB/T 15972.40—2008,IEC 60793-1-40:2001,MOD) GB/T 15972.42 光纤试验方法规范 第42部分:传输特性和光学特性的测量方法和试验程序—波长色散(GB/T 15972.42—2008,IEC 60793-1-42:2001,MOD) GB/T 15972.44 光纤试验方法规范 第44部分:传输特性和光学特性的测量方法和试验程序—截止波长(GB/T 15972.44—2008,IEC 60793-1-44:2001,MOD) GB/T 15972.45 光纤试验方法规范 第45部分:传输特性和光学特性的测量方法和试验程序—模场直径(GB/T 15972.45—2008,IEC 60793-1-45:2001,MOD) GB/T 15972.48—2016 光纤试验方法规范 第48部分:传输特性和光学特性的测量方法和试验程序—偏振模色散(IEC 60793-1-48:2007,NEQ) GB/T 17650.2—1998 取自电缆或光缆的材料燃烧时释出气体的试验方法 第2部分:用测量pH值和电导率来测定气体的酸度(IEC 60754-1:1994,IDT) GB/T 17651—1998 (所有部分)电缆或光缆在特定条件下燃烧的烟密度测定(idt IEC 61034:1997) GB/T 18380.12—2008 电缆和光缆在火焰条件下的燃烧试验 第12部分:单根绝缘电线电缆火焰垂直蔓延试验 1kW预混合型火焰试验方法(IEC 60332-1-2:2004,IDT) GB/T 24202 光缆增强用碳素钢丝 GB/T 26125—2011 电子电气产品 六种限用物质(铅、汞、镉、六价铬、多溴联苯和多溴二苯醚)的测定(IEC 62321:2008,IDT) GB/T 26572 电子电气产品中限用物质的限量要求 YD/T 629 (所有部分)光纤传输衰减变化的监测方法 YD/T 723.2—2007 通信电缆光缆用金属塑料复合带 第2部分:铝塑复合带 YD/T 723.3—2007 通信电缆光缆用金属塑料复合带 第3部分:钢塑复合带 YD/T 837.1~837.5—1996 铜芯聚烯烃绝缘铝塑综合护套市内通信电缆试验方法 YD/T 839.2—2014 通信电缆光缆用填充和涂覆复合物 第2部分:纤膏 YD/T 839.3—2014 通信电缆光缆用填充和涂覆复合物 第3部分:缆膏 YD/T 908—2011 光缆型号命名方法 YD/T 1020 (所有部分)电缆光缆用防蚁护套材料特性 YD/T 1065.2—2015 光纤偏振模色散的试验方法 第2部分:链路偏振模色散系数(PMDQ)的计算方法 YD/T 1113 通信电缆光缆用无卤低烟阻燃材料 YD/T 1115 (所有部分)通信电缆光缆用阻水材料 YD/T 118.1 光纤用二次被覆材料 第1部分:聚对苯二甲酸丁二醇酯 YD/T 1118.2 光纤用二次被覆材料 第2部分:改性聚丙烯 YD/T 1118.3 光纤用二次被覆材料 第3部分:改性聚碳酸酯 YD/T 1181.1 光缆用非金属加强件的特性 第1部分:玻璃纤维增强塑料杆 YD/T 1181.2 光缆用非金属加强件的特性 第2部分:芳纶纱 YD/T 1181.3 光缆用非金属加强件的特性 第3部分:芳纶增强塑料杆 YD/T 1181.4 光缆用非金属加强件的特性 第4部分:玻纤纱 JB/T 8137 (所有部分)电线电缆交货盘产品分类 3 产品分类 3.1 概述 本标准所规定的光缆为中心管填充式室外光缆,其中心管内应有纤膏连续填充,光缆阻水结构特征均为填充式。光缆按YD/T 908—2011的规定分类和划分型式、规格和编制型号。其中,与护套有关的代号增加以下规定: W——夹带平行加强件的钢-塑料粘结护套; P——夹带平行加强件的塑料护套。 注:P的含义为平行(Parallel)。 3.2 型式 3.2.1 光缆的基本结构型式及名称 光缆的基本结构型式及名称如下: ● GYXTW—中心管填充式、金属加强构件、夹带平行钢丝的钢-聚乙烯粘结护套通信用室外光缆; ● GYXTZW—中心管填充式、金属加强构件、夹带平行钢丝的钢-阻燃聚乙烯粘结护套通信用室外光缆; ● GYXTWH—中心管填充式、金属加强构件、夹带平行钢丝的钢-低烟无卤粘结护套通信用室外光缆; ● GYXTW53—中心管填充式、金属加强构件、夹带平行钢丝的钢-聚乙烯粘结护套、纵包皱纹钢带铠装、聚乙烯套通信用室外光缆; ● GYMXTP—金属中心管填充式、金属加强构件、夹带平行钢丝的聚乙烯护套通信用室外光缆; ● GYMXTY—金属中心管填充式、金属加强构件、聚乙烯护套通信用室外光缆; ● GYXTY—中心管填充式、金属加强构件、聚乙烯护套通信用室外光缆; ● GYXTZY—中心管填充式、金属加强构件、阻燃聚乙烯护套通信用室外光缆; ● GYXTH—中心管填充式、金属加强构件、低烟无卤护套通信用室外光缆; ● GYFXTY—中心管填充式、非金属加强构件、聚乙烯护套通信用室外光缆; ● GYXTS—中心管填充式、金属加强构件、钢-聚乙烯粘结护套通信用室外光缆; ● GYXTZS—中心管填充式、金属加强构件、钢-阻燃聚乙烯粘结护套通信用室外光缆; ● GYXTA—中心管填充式、金属加强构件、铝-聚乙烯粘结护套通信用室外光缆; ● GYXTZA—中心管填充式、金属加强构件、铝-阻燃聚乙烯粘结护套通信用室外光缆。 3.2.2 各种主要型式适用场合 各主要型式和派生型式光缆的适用敷设方式和特殊条件参见附录A。 3.3 规格 3.3.1 光缆中的光纤应是符合GB/T 9771规定的B1.1类(非色散位移单模光纤)、B1.2类(截止波长位移单模光纤)、B1.3类(波长段扩展的非色散位移单模光纤)、B4类(非零色散位移单模光纤)、B6类(即弯曲不敏感单模光纤)单模光纤或用户要求的其它适用类别的光纤。 3.3.2 光缆中的光纤数宜为2芯~144芯,也可以是用户要求的其它芯数。 3.4 产品型号 光缆型号由光缆的型式和规格代号组成,两者之间用空格隔开。 3.5 产品标记 加工订货时应标明光缆产品标记,它由光缆的型号和本标准编号组成。 示例1:中心管填充式、金属加强构件、夹带平行钢丝的钢-聚乙烯粘接护套通信用室外光缆,包含24根B1.3类单模光纤,则光缆产品标记应表示为: GYXTW 24B1.3 YD/T 769—2018 示例2:金属中心管填充式、金属加强构件、聚乙烯护套通信用室外光缆,包含24根B1.3类单模光纤,则光缆产品标记应表示为: GYMXTY 24B1.3 YD/T 769—2018 4 要求 4.1 结构 4.1.1 总则 4.1.1.1 光缆应由光纤、中心管、加强构件、阻水材料和护层构成,护层又包括护套和可能有的外护层。附录B给出了一些典型光缆结构的例子。也可采用满足本标准规定的机械、环境和传输性能要求的其它结构。 4.1.1.2 光缆结构应是全截面阻水结构,即水在缆芯和护层中都不能纵向渗流。 4.1.1.3 同批、同型式规格的光缆产品应具有相同结构排列和相同识别色谱。 4.1.2 缆芯 4.1.2.1 概述 缆芯是一根包括多芯通信用单模光纤或用户要求的其它适用类别光纤的中心管,管中连续填充一种触变型的纤膏。 4.1.2.2 光纤 4.1.2.2.1 光缆中宜由同一类型的有涂覆层的通信用单模光纤或用户要求的其它适用类别光纤组成,其芯数应符合光缆规格要求。同批光缆应使用同一设计、相同材料和相同工艺制造出来的光纤。 4.1.2.2.2 光纤涂覆层表面应有全色色标,其颜色应符合GB/T 6995.2—2008规定,并且不褪色不迁移。允许使用光纤本色替代白颜色。 4.1.2.2.3 用于成缆的单模光纤性能应符合GB/T 9771相关部分的有关规定。 4.1.2.3 中心管 4.1.2.3.1 中心管类型包括塑料松套管和金属松套管,它对涂覆光纤起机械缓冲保护作用。 4.1.2.3.2 塑料松套管材料可用聚对苯二甲酸丁二醇酯(PBT)、聚丙烯塑料(PP)、聚碳酸酯塑料(PC)或其它合适的塑料,PBT、PP和PC性能应分别符合YD/T 1118.1、YD/T 1118.2和YD/T 1118.3规定;金属松套管材料可用不锈钢带或其它合适的金属材料,不锈钢带性能应符合GB/T 3280规定。 4.1.2.3.3 当光纤芯数不超过12芯时,管内光纤采用全色谱识别,其颜色应按表1规定选取,在不影响识别的情况下允许使用光纤本色替代白颜色。当光纤数超过12芯时,光纤应扎束或在光纤表面添加色环以区分。对于扎束光纤,应使用有色扎纱区分,其颜色应从表1中选择。 表1 识别用全色谱 序号 1 2 3 4 5 6 7 8 9 10 11 12 颜色 蓝 橙 绿 棕 灰 白 红 黑 黄 紫 粉红 青绿 4.1.2.3.4 中心管与光纤之间应有足够的空间,中心管与光缆护套间应具有一定的结构稳定保持力,避免中心管的抽出,以保证光缆的温度性能。其中: ● 塑料松套管外径标称值宜为1.8mm~8.0mm,厚度应随外径增大而增大,其标称值宜为0.3mm~1.2mm,容差应满足: ——当外径标称值为1.8mm~4.0mm(含4.0mm)时,外径标称值容差为±0.10mm,厚度容差为±0.05mm; ——当外径标称值为4.0mm~8.0mm时,外径标称值容差为±0.20mm,厚度容差为±0.10mm。 ● 金属松套管外径标称值宜为1.5mm~6.0mm,容差为±0.10mm;厚度应随外径增大而增大。其标称值宜为0.15mm~0.30mm,容差为±0.05mm。此外,松套管标称尺寸可随管中的光纤芯数改变,允许采用用户要求的其它标称尺寸。 4.1.2.3.5 光纤在中心管中的余长应均匀稳定,以使光缆的拉伸性能和衰减温度特性符合本标准规定。 4.1.2.3.6 中心管内的间隙应连续填充一种触变型纤膏。纤膏应与其相接触的其它光缆材料相容,且不损害光纤传输特性和使用寿命。纤膏应符合YD/T 839.2—2014的规定,用于金属松套管的纤膏应为吸氢型纤膏。 4.1.3 加强构件 4.1.3.1 加强构件应在护套中或护套内中心管外,它可以是金属的或非金属的。这些加强构件应具有足够的截面、杨氏模量和弹性应变范围,以使光缆的拉伸性能和衰减温度特性符合本标准规定。 4.1.3.2 金属加强构件应用高强度单圆钢丝,高强度钢丝宜是磷化钢丝,也可以是不锈钢丝。当中心管为金属松套管时,也可采用镀锌钢丝。钢丝表面应圆整光滑。磷化钢丝和镀锌钢丝的杨氏模量应不低于190GPa,其它性能应符合GB/T 24202的规定。不锈钢丝性能应符合GB/T 4240的规定。在光缆制造长度内,单圆钢丝不允许接头。 4.1.3.3 非金属加强构件宜用非金属纤维增强塑料杆,非金属纤维增强塑料杆包括玻璃纤维增强塑料(简称GFRP)杆、芳纶增强塑料(简称KFRP)杆和玄武岩纤维增强塑料(简称BFRP)杆等类型,GFRP性能应符合YD/T 1181.1的规定,KFRP性能应符合YD/T 1181.3的规定,BFRP性能应符合YD/T 1181.5的规定。也可采用其它合适的非金属加强构件,例如芳纶纱、玻璃纤维纱或非金属纤维增强塑料带,芳纶纱应符合YD/T 1181.2的规定,玻璃纤维纱应符合YD/T 1181.4的规定。在光缆制造长度内,GFRP、KFRP、BFRP和非金属纤维增强塑料带不允许接头,芳纶纱或玻璃纤维纱每束允许有1个接头,但在任意200m光缆长度内只允许1个接头。 4.1.4 阻水层 为保证光缆具有良好的抗渗水能力,光缆护套以内可能渗水的间隙应有有效的阻水措施,在缆芯和护套间设有阻水层。阻水层可以是连续放置的阻水带、阻水粉或阻水纱,也可以是连续填充的缆膏,或间隔设置的阻水环(通常为缆膏)。阻水带和阻水纱性能应符合YD/T 1115—2001的规定,缆膏性能应满足YD/T 839.3—2014的规定,阻水粉性能要求待研究。 4.1.5 护套和外护层 4.1.5.1 总则 4.1.5.1.1 光缆常用护套有夹带平行加强件的钢—塑料粘结护套(简称W护套)、夹带平行加强件的塑料护套(简称P护套)、钢-聚乙烯粘结护套(简称S护套)、铝-聚乙烯粘结护套(简称A护套)和聚乙烯护套(简称Y护套)。 4.1.5.1.2 当光缆需要进一步保护时,可在护套外施加保护层。除本标准另有规定,外护层结构应符合GB/T 2952的有关规定。 4.1.5.1.3 护套和外护层中黑色聚乙烯材料应采用线性低密度、中密度或高密度聚乙烯护套料。它们应符合GB/T 15065规定。用户要求时,允许采用其它颜色的耐日光老化的聚乙烯套。 4.1.5.1.4 护套和护层表面应光滑圆整,任何横断面上均应无目力可见的气泡、砂眼和裂纹。 4.1.5.2 夹带平行加强件的钢—塑料粘结护套(W护套) 4.1.5.2.1 夹带平行加强件的钢—塑料粘结护套应在中心管外施加一层纵包搭接的钢塑复合带挡潮层,并同时挤包一层夹带平行钢丝或非金属纤维增强塑料杆的黑色塑料套。塑料套与复合带之间以及复合带两边缘搭接处应相互粘结为一体。复合带可采用不轧纹复合带或轧纹复合带,其搭接的重叠宽度应不小于5mm,或在缆芯直径小于8.0mm时重叠宽度不小于缆芯周长的20%。 4.1.5.2.2 钢塑复合带应符合YD/T 723.3—2007规定的双面复合粘结薄膜钢带的要求。其中钢带的最小厚度不小于0.13mm,复合薄膜的标称厚度为0.058mm。在光缆制造长度上允许有少量复合带接头,接头间的距离应不小于350m,接头处应电气导通。含接头的复合带强度应不低于不含接头的相邻段强度的80%。 4.1.5.2.3 加强件外缘至塑料护套外缘的塑料厚度的标称值为1.0mm,最小值应不小于0.8mm,平均值应不小于0.9mm。 4.1.5.3 夹带平行加强件的塑料护套(P护套) 夹带平行加强件的塑料护套应在中心管外挤包一层夹带平行钢丝或非金属纤维增强塑料杆的黑色塑料套,加强件外缘至塑料护套外缘的塑料厚度的标称值为1.0mm,最小值应不小于0.8mm,平均值应不小于0.9mm。 4.1.5.4 钢/铝—塑料粘结护套(S/A护套) 4.1.5.4.1 钢/铝—塑料粘结护套应在中心管或螺旋绕包的加强件外施加一层纵包搭接的钢/铝塑复合带挡潮层,并同时挤包一层黑色塑料套,使塑料套与复合带之间以及复合带两边缘搭接处应相互粘结为一体。其搭接的重叠宽度应不小于5mm,或在缆芯直径小于8.0mm时重叠宽度不小于缆芯周长的20%。 4.1.5.4.2 钢塑复合带应符合YD/T 723.3—2007规定的双面复合粘结薄膜钢带的要求。其中钢带的最小厚度不小于0.13mm,复合薄膜的标称厚度为0.058mm。在光缆制造长度上允许有少量复合带接头,接头间的距离应不小于350m,接头处应电气导通。含接头的复合带强度应不低于不含接头的相邻段强度的80%。 4.1.5.4.3 铝塑复合带应符合YD/T 723.2—2007规定的双面复合粘结薄膜铝带的要求。其中铝带的标称厚度为0.15mm,复合薄膜的标称厚度为0.058mm。在光缆制造长度.上允许有少量复合带接头,接头间的距离应不小于350m,接头处应电气导通。含接头的复合带强度应不低于不含接头的相邻段强度的80%。 4.1.5.4.4 塑料护套厚度标称值为1.8mm,最小值应不小于1.5mm,护套任何横断面上的平均值应不小于1.6mm。 4.1.5.5 聚乙烯护套(Y护套) 聚乙烯护套应紧密被覆于中心管或加强件的外周。聚乙烯护套厚度的标称值为1.6mm,最小值应不小于1.3mm,任何横断面.上的平均值应不小于1.4mm;但有53型外护层时,标称值为1.0mm,最小值应不小于0.8mm,平均值应不小于0.9mm。 4.1.5.6 53型外护层 53型外护层应在护套外施加一层纵包搭接的皱纹钢塑复合带挡潮层,并同时挤包一层黑色聚乙烯,使聚乙烯套与复合带之间以及复合带两边缘搭接处相互粘结为一体。复合带纵包后的皱纹应成环状,其搭接的重叠宽度应不小于5mm,或在内护套直径小于8.0mm时重叠宽度不小于缆芯周长的20%。对钢塑复合带的要求同4.1.5.4.2。聚乙烯护层厚度的标称值为2.0mm,最小值应不小于1.6mm,任何横截面上的平均值应不小于1.8mm。护套与53型的钢带之间应用阻水带或阻水纱、阻水环或者其它阻水材料进行阻水。 4.1.5.7 防蚁外被层 防蚁外被层(即4型)光缆一般在光缆的外层聚乙烯套上再挤包一层与其粘合的邵氏硬度HD不小于63的聚酰胺套或聚烯烃共聚物套,它应是耐日光老化的黑色、蓝色或其它颜色,其表面应完整、光滑、最小厚度应不小于0.4mm。也可用无毒无害的防蚁护套直接代替外层的聚乙烯套,其厚度应符合所代替的外层聚乙烯套的厚度规定。防蚁层用聚酰胺和聚烯烃共聚物材料应符合YD/T 1020(所有部分)的规定。 4.1.5.8 阻燃光缆结构 4.1.5.8.1 阻燃光缆的护套或(和)外被层宜用阻燃聚乙烯套,也可用低烟无卤阻燃聚烯烃套,其它的元构件宜尽可能采用不燃和阻燃的材料。低烟无卤阻燃材料应符合YD/T 1113规定。 4.1.5.8.2 阻燃光缆的其它结构要求仍应符合本章规定。 4.2 长度 4.2.1 光缆的标准制造长度标称值宜为2000m、3000m或4000m,容差为0m~+50m。 4.2.2 光缆交货长度宜为标准制造长度,经买方同意,也可以采用其它长度交货。 4.3 标志 4.3.1 光缆应在外层塑料套表面沿长度方向作永久性标志,宜为白色,标志应不影响光缆的任何性能。相邻标志始点间的距离应不大于1m。当出现错误时应擦去重印,或在光缆外套上重印(宜用黄色)。 4.3.2 标志的内容应包括: a)光缆产品型号; b)计米长度; c)制造厂名称(或代号)或(和)商标; d)制造年份或生产批号。 4.3.3 标志应清晰,并与护套粘附牢固,经过擦拭试验后应仍可辨认。 4.3.4 标志中计米长度的误差应在0~1%范围,应保证真实长度不小于计米长度。 4.4 性能要求 4.4.1 光缆中单模光纤特性 未成缆单模光纤的特性应符合GB/T 9771的规定,成缆单模光纤的特性应符合附录C的规定。 4.4.2 护层性能 4.4.2.1 挡潮层钢(铝)带和金属铠装层应在光缆纵向分别保持电气导通。 4.4.2.2 粘结护套(含53型外护层)的钢(铝)带与聚乙烯套之间的剥离强度应不小于1.4N/mm。 4.4.2.3 护套及外被层的机械物理特性应符合表2规定。防蚁外被层要求可见YD/T 1020中的相关规定。 4.4.2.4 外护层的其它性能应符合GB/T 2952的有关规定。 表2 护套及外被层的机械物理性能 序号 项目 单位 指标 LLDPE MDPE HDPE LSZH ZRPE 1 抗拉强度 热老化处理前 (最小值) 热老化前后变化率|TS| (最大值) 热老化处理温度 热老化处理时间 MPa 10.0 12.0 16.0 9.0 10.0 % 20 20 25 25 20 ℃ h 100±2 24×10 2 断裂伸长率 热老化处理前 (最小值) 热老化处理后 (最小值) 热老化前后变化率|EB| (最大值) 热老化处理温度 热老化处理时间 热收缩率 (最大值) % 350 125 220 % 300 100 180 % 20 25 20 ℃ h % 100±2 24×10 5 3 热处理温度 热处理时间 ℃ 100±2 115±2 85±2 100±2 h 4 4 耐环境应力开裂(50℃,96h) 个 失效数/试样数:0/10 注:LLDPE、MDPE、HDPE、LSZH、ZRPE分别为线性低密度、中密度、高密度聚乙烯、低烟无卤阻燃聚烯烃和阻燃聚乙烯的简称 4.4.3 光缆的机械性能 4.4.3.1 光缆的机械性能应包括光缆的拉伸、压扁、冲击、反复弯曲、扭转、卷绕以及中心管弯折等项目,并应通过5.5规定的试验方法和试验条件来检验。 4.4.3.2 光缆允许承受的拉伸力和压扁力应符合表3规定。在敷设环境允许或用户要求的情况下也可以采用其它认可的参数。 表3 光缆允许拉伸力和压扁力 项目 技术要求 短暂 长期 拉伸,允许拉伸力,单位:N 1500(3000) 600(1000) 压扁,允许压扁力,单位:N/100mm 1000(3000) 300(1000) 注:括号中为对直埋光缆要求 4.4.3.3 光缆允许的最小弯曲半径用光缆外径D的倍数表示,它应符合表4规定。 表4 光缆允许的最小弯曲半径 外护层型式 无外护层或04型 53型 金属加强件 非金属加强件a 静态弯曲 10D 12.5D 12.5D 动态弯曲 20D 25D 25D a 非金属纤维增强纱的性能满足并优于该规定,如有特殊要求,也可由用户与制造厂协商 4.4.4 光缆的环境性能 4.4.4.1 概述 光缆的环境性能应包括衰减温度特性、滴流性能、护套完整性、渗水性、阻燃性、防蚁性能、低温下弯曲性能和低温下冲击性能等项目,并应通过5.6规定的试验方法和试验条件来检验。 4.4.4.2 适用温度范围及其衰减温度特性 光缆的适用温度范围有三种级别,其代号为A、B和C。光缆温度附加衰减对于各类型光纤有3个级别,如表5所示。 表5 光缆温度特性 分级代号 适用温度范围(℃) 允许附加衰减(dB/km) 低限TA 高限TB 0级(特级) 1级 2级 A -40 +60 无明显 附加衰减 不大于0.05 不大于0.10 B -30 +60 C -20 +60 注:光缆温度附加衰减为适用温度下相对于20℃下的光纤衰减差 4.4.4.3 滴流性能 在温度为70℃的环境下24h,光缆应无填充复合物和涂覆复合物等滴出。 4.4.4.4 聚乙烯套完整性 4.4.4.4.1 聚乙烯套应连续完整,当聚乙烯套下有金属层时,应采用电气方法进行聚乙烯套的完整性试验。 4.4.4.4.2 用电火花试验检验其完整性时,在表6规定的试验电压下聚乙烯套应不击穿。 表6 聚乙烯套电火花试验电压 单位为千伏 电压类型 直流 交流 试验电压(最小值) 9t,最高25 6t,最高15 注1:t为聚乙烯套的标称厚度(当W护套或P护套时,t为加强件外缘至聚乙烯护套外缘的聚乙烯套的标称厚度),单位为mm。 注2:交流试验电压系有效值 4.4.4.4.3 用浸水试验检验其完整性时,光缆在浸水24h后聚乙烯外套的电性能应符合: a)在直流电压500V下对水绝缘应不小于2000MΩ·km; b)耐电压水平应不低于在直流15kV下2min不击穿。 4.4.4.5 渗水性能 4.4.4.5.1 1m水头加在光缆的全部截面上时,光缆应能阻止水纵向渗流。 4.4.4.5.2 光缆的缆芯中采用阻水带或阻水纱膨胀方式阻水时,应将光缆渗水始端浸于水中(100±10)mm,在水中浸泡10min,然后进行渗水试验。 4.4.4.6 防蚁性能 在有白蚁的环境下,防蚁光缆应具有足够的耐啮蚀性能,具体指标待研究。 4.4.4.7 低温下U形弯曲性能 光缆应具有在-20℃低温下,53型光缆承受弯曲半径为20倍光缆直径,无外护套或04型光缆承受弯曲半径为15倍光缆直径的U形弯曲能力。 4.4.4.8 低温下冲击性能 光缆应具有在-20℃低温下耐机械冲击的能力。 4.4.4.9 阻燃光缆的燃烧性能 阻燃光缆的燃烧性能应符合: a)阻燃性:应通过单根垂直燃烧试验来验证:当用户有要求时,阻燃护套及外被层光缆应通过C类成束燃烧试验。 b)烟密度:透光率应不小于50%。烟密度仅适用LSZH护套或(和)外被层的光缆。 c)腐蚀性:燃烧产生气体的pH值应不小于4.3,电导率应不大于10μS/mm。腐蚀性仅适用LSZH护套或(和)外被层的光缆。 4.4.5 环保性能 光缆组成材料应根据GB/T 26572中的规定进行分类。当用户有要求时,光缆用均一材料(EEP-A类)中限用物质限量应符合表7的规定。 表7 光缆材料中限用物质的含量限值 物质种类 物质名称 含量限值 重金属 铅 0.1% 镉 0.01% 汞 0.1% 6价铬 0.1% 有机溴代物 多溴联苯(PBB) 0.1% 多溴二苯醚(PBDE) 0.1% 注:限量要求值是质量分数,即材料中所允许含物质的最大质量占材料总质量的百分比。 5 试验方法 5.1 总则 光缆的各项性能应按表8规定的试验方法进行验证。 表8 试验项目和试验方法及检验抽样比例 序号 项目 本标准条文号 试验方法 抽样比例 出厂 型式 1 光缆结构完整性及外观 4.1 见5.2 100% 见6.4 2 2.1 2.2 2.3 识别色谱 光纤识别色谱 光纤束扎纱识别色谱 颜色不迁移和不褪色 表1 4.1.2.3.3 4.1.2 目力检查 目力检查 待研究 100% 100% — 3 3.1 3.2 3.3 光缆结构尺寸 松套管外径和壁厚 护套和外护层的厚度 其它结构尺寸 4.1.2.3.4 4.1.5 4 见GB/T 2951.11—2008 见GB/T 2951.11—2008 见YD/T 837.5—1996 10% 100% 10% 4 光缆长度 4.2 见5.4 100% 5 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 光纤特性 尺寸参数 模场直径 截止波长 衰减系数 波长附加衰减 衰减不连续性 色散 偏振模色散设计值 4.4.1 见GB/T 15972.20~22 见GB/T 15972.45 见GB/T 15972.44 见GB/T 15972.40 见GB/T 15972.40 见GB/T 15972.40 见GB/T 15972.42 见GB/T 15972.48—2016a 5% 5% 5% 100% 5% 10% 5% —b 6 6.1 6.2 6.3 6.4 6.5 6.6 护层性能 金属挡潮层和铠装层的电气导通性 粘结护套剥离强度 热老化前后的抗拉强度和断裂伸长率 热收缩率 耐环境应力开裂 外护层的其它性能 4.4.2.1 4.4.2.2 表2序号1、2 表2序号3 表2序号4 4.4.2.4 见YD/T 837.2—1996中4.9 见YD/T 837.3—1996中4.9 见YD/T 837.3—1996中4.10和4.11 见YD/T 837.3—1996中4.12 见YD/T 837.4—1996中4.1c 见GB/T 2952 100% — — — — — 见6.4 7 光缆的机械特性 4.4.3 见5.5 — 8 8.1 8.2 8.3 8.4 8.5 8.6 8.7 光缆环境性能 衰减温度特性 滴流特性 聚乙烯护套完整性(电火花) (浸水) 渗水性能 低温下U形弯曲性能 低温下冲击性能 燃烧性能 a)阻燃性 b)烟密度 c)腐蚀性 4.4.4.2 4.4.4.3 4.4.4.4.2 4.4.4.4.3 4.4.4.5 4.4.4.7 4.4.4.8 4.4.4.9a) 4.4.4.9b) 4.4.4.9c) 见5.6.1 见GB/T 7424.2—2008方法F6(预处理1h) 见YD/T 837.4—1996中4.6 见5.6.2 见GB/T 7424.2—2008方法F5B 见5.6.3 见5.6.4 见GB/T 18380.12—2008、GB/T 18380.35—2008 见GB/T 17651—1998 见GB/T 17650.2—1998 — — 100% — 100% — — — — — 9 环保性能 4.4.5 见GB/T 26125—2011 — 10 10.1 10.2 10.3 光缆标志 标志的完整性和可识别性 标志的牢固性 计米标志误差 4.3 目力检查 见5.3.1 见5.3.2 100% — — 11 包装 7.1 目力检查 100% 注1:出厂检验栏目中的百分数是按单位产品抽检的最小百分比。 注2:光缆中的光纤尺寸参数、模场直径、截止波长、色散和波长附加衰减可用光纤成缆前可追溯的同端头的实测值作为出厂检验值 a PMDQ按YD/T 1065.2—2015规定的方法计算。 b 必要时,应提供该批光缆可用于链路设计用的PMDQ值。 c 在光缆护套上纵向冲制试样 5.2 光缆结构检查 光缆结构应在距离光缆端头不少于100mm处用目力检查其完整性和色谱,取样检查结构尺寸。 5.3 光缆标志检查 5.3.1 标志擦拭 试验按如下规定进行: a)试验方法:GB/T 7424.2—2008中方法E2B光缆标志耐磨损; b)负载:20N(按GB/T 7424.2—2008中E2B的方法2,适用喷印),或8N(按GB/T 7424.2—2008中E2B的方法1,适用压印); c)循环次数:不少于10次; d)验收要求:用目力认可辨认外护套标志内容。 5.3.2 计米标志误差 长度计量误差应是在适当长度上,例如在距离光缆端头15m以外的任意5m长度上,用钢皮尺沿光缆量得长度减去用计米数字确定的长度(见5.4)对后者的相对差。 5.4 光缆长度检查 光缆长度应从光缆两端的计米标志(有黄、白两色标志时以黄色为准)的数字差来确定,也可采用光学方法(如OTDR仪器)来测量。 |
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YD/T 769-2018, YD 769-2018, YDT 769-2018, YD/T769-2018, YD/T 769, YD/T769, YD769-2018, YD 769, YD769, YDT769-2018, YDT 769, YDT769 |