YD/T 1460.3-2006 Air-blown micro cables and optical fibre units for telecommunications - Part 3: Microducts, microduct bundles and microduct accessories
Some standard content:
ICS3318010
Telecommunication Industry Standard of the People's Republic of China
YD/T1460.3-2006
Telecommunication microduct optical fibre cables and fibre units for installation by blowing
Part 3:Microducts, microduct bundles and microduct accessories accessories2006-12-11 release
2007-01-01 implementation
The Ministry of Information Industry of the People's Republic of China releases Foreword
■Scope·
Normative reference documents
3 Definition
4 Product model and marking·
Test method
7 Inspection rules·
8 Packaging, transportation and storage
Appendix A (Normative Appendix) Basic technical requirements for microtube accessories·Appendix B (Informative Appendix)
Structure diagram of microtube and microtube bundle
References·
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YD/T 1460.3-2006
YD/T 1460.3-2006
YD/T1460-2006 "Air-blown micro optical cables and optical fiber units for communications" is divided into the following 5 parts: Part 1: General provisions;
-Part 2: Outer protective tube;
-Part 3: Microducts, microduct bundles and microduct accessories: -Part 4: Micro optical cables;
Part 5: High-performance optical fiber units:
This part is Part 3 of YD/T1460-2006 and should be used in conjunction with YD/T1460.1-2006. In the formulation of this part, the provisions of the test items refer to the provisions of the International Telecommunication Union Standard C60794-5:2003 "Optical Cable Part 5: Micro-cable for Air-blown Installation in Micro-ducts" and the main performance indicators of the products refer to the provisions of the EC Committee CD Draft 86A/867/CD\60794-3-50:2003 "Optical Cable Part 3-50: Outdoor Optical Cable - Micro-duct Cable for Air-blown Installation" (First Edition).
Appendix A of this part is a normative appendix, and Appendix B is an informative appendix. This part is proposed and managed by the China Communications Standards Association. Drafting units of this part: Wuhan Post and Telecommunications Research Institute Datang Telecom Technology Industry Group
Yangtze Optical Fibre and Cable Co., Ltd.
Jiangsu Zhongtian Technology Co., Ltd.
Sichuan Huiyuan Optical Communication Co., Ltd.
Beijing Tonghe Shiyi Telecommunication Science and Technology Research Institute Co., Ltd. Main drafters of this part: Shi Huiping Xue Mengchi Song Zhituo Yu Jianwei Wu Yanxiang Wang An 1 Scope
Air-blown micro-optical cables and optical fibre units for communication Part 3 Microducts, microduct bundles and microduct accessories YD/T 1460.3-2006
This part of YD/T 1460 specifies the definition, product type and marking, requirements, test methods, inspection rules, packaging, transportation and storage of microducts and microduct bundles, and the basic requirements for microduct accessories: This part is applicable to microducts, microduct bundles and microduct accessories that are wound before outdoor or indoor air-blown installation. 2 Normative references
The clauses in the following documents become clauses of this part through reference in this part of YDT1460. For all references with legal dates, all subsequent amendments (excluding errata) or revisions are not applicable to this part. However, parties to agreements based on this part are encouraged to study whether the latest versions of these documents can be used. For all references without a date, the latest version applies to this part. GBT2828-2003 Sampling inspection procedures for attributes Part 1: Sampling plan for batch inspection based on acceptance quality limit (AQL) JISO 2859-1:1999, JDT)
GB/T6671-2001 Determination of longitudinal shrinkage of thermoplastic pipes (eqYISO2505:1994) GB6995.2-1986 Identification marks for wires and cables Part 2: Standard color GB7424.2-2002 Optical fiber cables - Part 2: Basic test methods for optical fiber cables (IHC60794-1-2:1999, Opricalfibrecables-Part [-2:Generic specification-Basic optical cable test procedures, MOD GB/T8804.1-2003 Determination of tensile properties of thermoplastic pipes Part 1: General test methods (ISO6259-1: 1997, IDT) GB/T8806-188 Plastic material dimensional measurement method GB/T9647-2003 Determination of ring stiffness of thermoplastic pipes (ISO9969: 1994, IDT) GB/T14152-2001 Test method for external impact resistance of thermoplastic pipes Inch needle rotation method (eqvISO3127 : 1994) GB/T15820-1995 Polyethylene pressure pipe and fittings connection pull-out test (eqVISO3501: 1976) YD/T837.4-1996 Copper core polyolefin insulation aluminum plastic composite sheathed urban communication cable test method Part 4 Environmental performance test method YD/T1460.1-2006 Communication air-blown micro optical cable and optical fiber unit Part 1: General 3 Definitions
The following definitions apply to this part;
Microduct bundles
See the definition in 3.3 of YD/T1460.1-2006. S.2
Cable of microduct
See the definition in 3.4 of YDT1460.1-2006, the cable is also called the cluster arm. KAONTKAca=
YD/T1460.3-2006
4 Product model and marking
4.1 Product classification
According to the different ways of combining microtubes, they can usually be divided into three categories: (1) microtubes;
(2) microtube bundles:
(3) pipe cables.
4.2 Type
4.2.1 Type composition
The product type marking includes product category, material and structure, as shown in Figure 1. Figure 1
4.2.2 Product category
S—microtube and microtube bundle;
L—pipe cables.
4.2.3 Material
YH—high-density polyethylene;
YHG—silicon-plastic composite.
4.2.4 Structure
(No symbol) Solid wall tube;
L Ribbed;
M Metal moisture barrier.
4.3 Specifications
4.3.1 Specifications of microtubes
Microtube product types constitute the product category
The specifications of microtubes are composed of the outer diameter and inner diameter of the microtube. The outer diameter and the inner diameter are connected by "/\". 4.3.2 Specifications of microtube bundles and cables
The specifications of microtube bundles and cables consist of the outer diameter of the microtube and the number of microtubes. The outer diameter and the number are connected by "×". 4.4 Model and marking
4.4.1 Model
The product model consists of type and specification. Each part is separated by a space. 4.4.2 Mark
When ordering, the microtube product mark should be indicated, which consists of the microtube model and the number of this part. Example 1: The microtube used for the air blowing installation system is made of high-density polyethylene, with an outer diameter of 7.0mm, an inner diameter of 5.5mm, and a ribbed tube wall structure. The product mark should be expressed as: SYHL 7/5.5 YD/T.1460.3-2006
YD/T1460.3-2006
Example 2: Micro-tube bundles used in air-blowing installation systems, the micro-tube material is a silicon-plastic composite material, the micro-tube outer diameter is 7.0 mm, the inner diameter is 5.5 mm, the number of micro-tubes is 5, and the tube wall structure is a solid wall tube, then the micro-tube bundle product mark should be expressed as: SYHG7×5YD/T 1460.3-2006
Example 3: Pipe cables with metal moisture barrier used in air-blowing installation systems, the inner micro-tube material is high-density polyethylene, the micro-tube outer diameter is 7.0 mm, the inner diameter is 5.5 mm, the tube wall structure is a belt auxiliary tube, and the number of micro-tubes is 19. Then the pipe cable product mark should be expressed as: LYHLM 7 × 19 YD/T 1460.3-20065Requirements
5.1 General requirements
5.4 and 5.5 of YD/T1460.1-2006 apply to this part. When in use, microtubes, microtube bundles or cables must be used in conjunction with corresponding accessories. The requirements for microtube accessories are shown in Appendix A. 5.2 Structure
5.2.1 Structure examples
The structure examples of microtubes, microtube bundles and cables are shown in Appendix B. 5.2.2 Microtube dimensions
Microtubes are small, light, soft plastic tubes with a maximum outer diameter of no more than 16 mm. Microtubes must be round. Commonly used dimensions are shown in Table 1.
8.0 ±0.1
10.0±0.1
12.0± 0.1
Table 1 Common sizes of microtubes
'For tubes with donors, the minimum inner diameter is the minimum inner diameter between the donors 5.2.3 Color spectrum
Minimum inner diameter
Unit: am
For easy identification, microtubes can be distinguished by color. The color should be blue, orange, green, brown, gray, white, red, black, yellow, purple, pink or cyan as specified in GB6995.2-1986. In the case that it does not affect identification, color lines can also be used for identification. The color of the color line
should be selected from Table 2.
Table 2 Full spectrum for identification
5.2.4 Microtube strategy
Microtubes are bundled together to form a certain number of microtubes (bundled). It can be installed in the existing outer protective tube at one time, but it cannot fill the entire outer protective tube, and the occupancy ratio should not be less than 60%. 5.2.5 Pipe and cable
When there is a requirement for waterproofing and moisture-proofing, the pipe and cable should have a moisture barrier. The moisture barrier should use materials that can block water and moisture. The sheath of the pipe and cable should be able to completely cover the micro-tube bundle therein, and the thickness should be 0.8mm. 3
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YD/T 1460.3-2006
5.3 Technical requirements
5.3.1 General
Micro-tubes, micro-tube bundles and pipes and cables should be uniform and free of pores or defects in any cross-section of the entire delivery length. The outer and inner surfaces should be free of obvious cracks, pinholes, joints, water stains, repairs and any other defects. 5.3.2 Mechanical properties
5.3.2.1 Tensile
The tensile properties of microtubes shall comply with the requirements of Table 3. Table 3 Tensile properties of microtubes
Tensile strength (MPa)
Elongation at break (%)
5.3.2.2 Maximum traction load
The maximum traction load of a microtube is the product of the tensile strength and the cross-sectional area of the microtube. 5.3.2.3 Flattening properties
Technical indicators
The flattening load of microtubes, microtube bundles and cables shall comply with the requirements of Table 4. The microtubes shall not open or have permanent damage under the flattening load. Table 4 Flattening properties of microtubes
Compression force (N)
Single microtube
Microtube bundle and cable
Note: D represents the diameter of a single microtube, in mm5.3.2.4 Recovery rate
50×D, not more than 450
Flattening load
When pressure is applied in the vertical direction of the microtube until the outer diameter deformation is 30% of the original outer diameter, the load is immediately unloaded, and the sample does not break or delaminate, and the outer diameter can recover to more than 90% of the original.
5.3.2.5 Drop hammer impact
Take 10 samples and at least 9 of them should be free of damage or cracks after the test in accordance with 6.4.5. 5.3.2.6 Flexibility
After the test in Section 6.4.6, there should be no visible damage to the outer surface and inner wall of the microtube. 5.3.2.7 Bending
The microtube should be able to meet the test in Section 6.4.7. After the test, there should be no visible damage. 5.3.2.8 Longitudinal Retraction
The microtube or microtube bundle should be able to meet the test in Section 6.4.8. After the test, the longitudinal retraction of the microtube should not be greater than 3%. 5.3.2.9 Ring Stiffness
The ring stiffness of the microtube should not be less than 6.3 kN/m. 5.3.2.10 Connection force with pipe joints
The connection force between the pipe and the joint shall not be less than 350N, and the joint shall not be loose or deformed. 5.3.3 Environmental performance
5.3.3.1 Air pressure
(a) During factory inspection, the microtube or microtube bundle shall be able to withstand an air pressure of 1.2MPa for 30min without leakage at room temperature of 20°C. &
YD/T 1460.3-2006
(b) During type test, the microtube or microtube bundle shall be able to withstand an air pressure of 1.2MPa without rupture after 240h at high temperature of 100℃. 5.3.3.2 Water pressure sealing
The microtubes connected with microtube joints shall be sealed as a whole and meet the test of 6.5.3. 5.3.3.3 Freezing
This performance is not required for the replacement cable.
Put the microtube at -15℃ for 10 hours. The tube should not be broken or cracked, and there should be no obvious cracks and defects on the appearance. 5.3.3.4 Electric spark test
This performance is only required for those containing metal components. The replacement cable should be able to withstand a 15kV/mm high-frequency voltage without wear. 5.3.4 Air blowing performance
The air blowing performance requirements of microtubes or microtube bundles are shown in Table 5. Table 5 Air blowing performance requirements for microtubes
5.4 Delivery length
Project name
Air blowing efficiency
Inner wall friction coefficient
Resistance (N·m)
Technical requirements
Can pass the microtube test on the plate or the field microtube test Static: ≤0.25
Dynamic: ≤0.20
0.01 ~ 0.3
The nominal value of the standard manufacturing length of the microtube should be 2000m, 3000m or 4000m, with a tolerance of 0% to +5%. The delivery length of the microtube should be the standard manufacturing length. With the buyer's consent, it can be delivered in any length: Test method
The various properties of the microtube should be tested according to the test methods specified in Table 6. Table 6
Microtube structural integrity and external
Micro-size
Mechanical properties of microtube
Tensile strength
Elongation at break
Maximum traction load of pipe
Flattening performance
Recovery rate
Hammer impact
Softness
Longitudinal shrinkage
Ring stiffness
Connection force with pipe joint
Test items, test methods and inspection rules Article number of this part
Test method
Part 4 6.2
This part 6.3
This part 6.4.2
This part 6.4.2.1
This part 6.4.2.1
This part 6.4.2.1||tt ||6.4.3 of this Part
6.4.4 of this Part
6.4.5 of this Part
6.4.6 of this Part
6.4.7 of this Part
6.4.8 of this Part
6.4.9 of this Part
6.4.10 of this Part
6.4.1 of this Part
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Inspection category
See Table 7
See Table 7
Not less than 3 pieces in the same batch
Not less than 3 pieces in the same batch
Not less than 3 pieces in the same batch
Not less than 3 pieces in the same batch
Not less than 3 pieces in the same batch
Not less than 3 pieces in the same batch
Not less than 3 pieces in the same batch
YD/T 1460.3-2006
Environmental performance
Air pressure
Air pressure with overflow
Air pressure at commercial temperature
Water pressure resistance and sealing
Table 6 (continued)
Article number of this part
Electric spark test (including metal components)
Air blowing performance
Air blowing efficiency
Inner wall friction Coefficient
Static friction coefficient of inner wall
Dynamic friction coefficient of inner wall
Rigidity (Nm2)
Test method
6.5.2 of this part
6.5.2.1 of this part
6.5.2.2 of this part
6.5.3 of this part
6.5.4 of this part
YD/T 837.4- 1996 4.6
YD/T1460.1-2006 7.2.1
YD/T1460.1-2U06 7.2.3
This part 6.6.3
Visual inspection
Visual inspection
Note: The percentage in the factory inspection column is the minimum percentage of the unit product number 6.2 Inspection of microtube structure
Inspection category
No less than 3 tubes in the same batch
No less than 3 tubes in the same batch
No less than 3 tubes in the same batch
No less than 3 tubes in the same batch
The microtube structure should be at least 100mm away from the end of the microtube. The integrity and structure of the microtube should be checked by self-viewing. The inner wall can be illuminated by a light source. 6.3 Dimension inspection
6.3.1 Length
The delivery length shall be measured by a meter whose measurement error shall not be negative. The measurement error shall be determined by a steel tape measure with an accuracy of 1mm. 6.3.2 Outer diameter and wall thickness
The measurement of outer diameter and wall thickness and their deviation shall be carried out in accordance with the provisions of GB/T8806-1988. 6.3.3 Minimum inner diameter
This part
Take 3 samples and measure the inner diameter of each sample at the same section with a vernier caliper with an accuracy of 0.02mm. Take the minimum value as the minimum inner diameter of the sample. Calculate the deviation using the measurement results. The measurement result with the largest deviation among the 3 samples is taken as the measurement result. 6.4 Mechanical property measurement method
6.4.1 General requirements
The following test methods and test conditions are used to verify the mechanical properties of the product. When the test results meet the requirements of Chapter 5, they are judged to be qualified.
6.4.2 Tensile strength
6.4.2.1 Tensile strength and elongation at break
Test equipment: It shall comply with the provisions of GB/T8804.1-2003. The accuracy shall be within ±1% of the displayed force value. The special fixture shall clamp the pipe evenly around the entire circumference of the pipe;
Specimen preparation: Take a pipe with a length of (250±10) mm as the specimen, and the number of specimens is 3: Tensile speed: 100mm/min;
YD/T 1460.3-2006
Acceptance requirements: Calculate the tensile strength and elongation at break according to the method specified in GB/T8804.1-2003, and take the measured average value of 3 specimens as the test result: The test results meet the requirements of Table 3. 6.4.3 Maximum traction load
Test method: Same as Section 6.4.2.1
Test result: The product of the tensile strength of the pipe and the cross-sectional area of the pipe. 6.4.4 Flattening performance
Test method: Follow the provisions of GB/T9647-2003; Sample: Take 250mm pipe sections from each of the three pipes as the sample: Flattening load: See Table 4;
Duration: Last for 1 minute;
Test speed: (10±5) mm/min;
Number of tests: 1 time for each sample, a total of 3 times. Acceptance requirements: The microtube should not crack or have permanent scratches under the flattening load. 6.4.5 Recovery rate
Sample preparation: Take a 200mm section from each of the three micro-tubes as the sample, and the two ends of the sample should be cut flat vertically: Compression speed: (10±0.4) mm/min; Test method: Apply pressure in the vertical direction, and unload immediately when the outer diameter deformation is 30% of the initial outer diameter. Visually observe whether the sample has cracks and delamination, and measure the minimum outer diameter at the flattened part after 1 hour of recovery; Acceptance requirements: It should meet the requirements of 5.3.2.4. 6.4.6 Drop hammer impact
Test method: GB/F14152-2001;
Number of samples: 10;
Seed head diameter: 25mm;
Hammer weight: Micro-tube: 100g: Micro-tube bundle: 300g: Pipe cable: 1500gHammer drop height: 1m;
Number of impacts: 1 impact for each sample.
Acceptance requirement: 9 out of 10 samples should have no visible damage. Impact marks are not considered as mechanical damage. 6.4.7 Flexibility
Test method: Wind 10 pieces tightly on the mandrel, the mandrel diameter is 12 times the diameter of the microtube or 36 times the outer diameter of the microtube bundle or cable; Holding time: 30 minutes;
Acceptance requirement: There is no visible damage on the outer and inner surfaces of the microtube. 6.4.8 Bending
Test method: Method E10 in GB/T7424.2; Bending radius: 20D;
Acceptance requirement: There is no visible damage to the microtube. 6.4.9 Longitudinal shrinkage
Test method: Test in accordance with the provisions of GB/T6671-2001. Take a sample of (200±20) mm in length from each of the three different microtubes, mark the lines, pre-treat at room temperature for at least 2 hours, measure the distance between the lines, and then place it in a 100℃±2℃ oven for 60 minutes before taking it out. After cooling to room temperature, measure the distance between the lines again, compare the two measured values before and after, and take the arithmetic mean of the three sample measurements as the final test result. Acceptance requirements: The longitudinal shrinkage rate of the microtube should not exceed 3%. 6.4.10 Ring stiffness Test method: Take a 200mm pipe section from each of the three pipes as a sample, and the ends of the sample should be cut vertically. The test is carried out in accordance with GB/T9647-2003, and the test speed is (5±1) mm/min. When the deformation of the outer diameter of the specimen in the vertical direction is 5% of the original inner diameter, record the load on the specimen, and the test result is calculated according to formula (1): S = 0.0186 + 0.025 x
Wherein: S—ring stiffness of the specimen, in kN/m24y 5% deformation of the inner diameter of the specimen in the vertical direction, in m; d-inner diameter of the specimen, in m;bzxz.net
F-load on the specimen, in kN: L length of the specimen, in m.
Take the arithmetic mean of the test results of the three specimens as the test result. Acceptance requirements: The test results shall meet the requirements of 5.3.2.9. 6.4.11 Connection force with pipe joints
According to the test method specified in GB/T15820-1995. ()
The number of samples is three, the constant tension is not less than 350N, and it is maintained for 1h. After the test, all three samples are not loose at the connection and there is no obvious deformation. 6.5 Environmental performance measurement method
6.5.1 General
The following test methods and test conditions are used to verify the environmental performance of the product. When the test results meet the specified qualified criteria, they are judged as qualified.
6.5.2 Air pressure
6.5.2.1 Air pressure at room temperature
Specimen length: not less than 500m:
Air pressure: Apply a pulling air pressure of at least 12bar to the sample; holding time: 30min:
Test temperature: 23℃±5℃;
Acceptance requirements: Micro-leakage, air pressure of not less than 12bar, no visible damage. 6.5.2.2 Air pressure after high temperature
Specimen length: not less than 500mm;
Test temperature: 100℃;
Holding time: 240h;
Air pressure: Apply an air pressure of at least 12bar to the specimen at 239℃±5: Acceptance requirements: The microtube should not be broken and there should be no visible damage. 8
6.5.3 Water pressure resistance and sealing
There are two methods for connection sealing test, and you can choose one of them: YD/T 1460.3-2006
(a) Connect the microtube and microtube joint according to the use requirements, fill the pipe with water at 23℃±59, seal both ends, and keep 2411. If there is no leakage, it is qualified:
(b) Connect the microtube and microtube joint according to the use requirements, add 1MPa water pressure at 23℃±5, seal both ends, and keep for 3min. If there is no leakage, it is qualified.
6.5.4 Freezing [No requirements for pipes and cables]
Take a section of sample, fill the sample with white water at 23℃*5C, seal both ends, and keep it at -15℃ for 10h. If the pipe has no burst or cracking, and there is no obvious visible cracks and defects on the appearance, it is qualified. 6.6 Air blowing performance test method
6.6.1 Air blowing efficiency
The air blowing efficiency test method of the microtube shall comply with the provisions of 7.2.1 of YD/T1460.1-2006. 6.6.2 Internal friction coefficient
The static friction coefficient of the inner wall of the microtube is measured by the plate method, and the test method shall comply with the provisions of Appendix B of YD/T1460.1-2006. The dynamic friction coefficient of the inner wall of the microtube is measured by the drum method, and the test method shall comply with the provisions of Appendix C of YD/T1460.1-2006. 6.6.3 Performance
Test method: Conduct in accordance with the provisions of GB 7424.2-2002 method E17A or E17B; acceptance requirements: The test results shall comply with the provisions of Table 5. 7 Inspection rules
7.1 General
The manufacturer shall establish a quality assurance system to ensure that the product quality meets the requirements of this standard. Micro-tube products shall be inspected by the manufacturer's quality inspection department. Only those that pass the inspection and are accompanied by the manufacturer's product quality certificate can be shipped. The manufacturer shall provide the buyer with the test records of the product's factory inspection.
Micro-tube product inspection is divided into factory inspection and type inspection. The inspection items and test methods shall comply with the provisions of this chapter and Chapter 6. Unless otherwise specified in the order contract, the inspection rules shall comply with the provisions of this chapter. 7.2 Factory inspection
7.2.1 Factory inspection items
For factory inspection items, see Table 6.
7.2.2 Sampling
7.2.2.1 Batch
The same specification of pipes produced under the same batch of raw materials, the same formula and [process] is a batch. 7.2.2.2 Sampling
The appearance and size inspection of micro-tubes shall be sampled in accordance with GB/T2828.1-2003, using the normal inspection one-time sampling plan, taking the general inspection level I, and the acceptance quality limit AQL is 6.5. For specific sampling, see Table 7. Other items shall be randomly sampled according to the corresponding provisions of each month in Table 6. 9
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