YD/T 2488.1-2023
Flexible steel tube armored optical cables Part 1: Circular optical cables (English Version)

Standard No.

YD/T 2488.1-2023

Language

Chinese, Available in English version

Release Date

2023

Published By

Professional Standard - Post and Telecommunication  CN  /  YD

Latest

YD/T 2488.1-2023

Replace

YD/T 2488-2013

Introduction

Technical evolution and core changes of standards

Technical dimensions	2013 version of the standard	Main upgrades of the 202X version
Fiber capacity	Maximum 24 fibers per tube	Capacity of a single tube expanded to 96 fibers
Fiber type	Including B1.1/B5	Added B1.2, removed B1.1/B5
Mechanical properties	Impact test 1-3N	Using 300g impact hammer
Environmental indicators	Temperature additional attenuation 0.3dB/km	B1.3 category increased to 0.2dB/km

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Analysis of key performance indicators

1. Mechanical protection system

The core protection layer is composed of 304 stainless steel spiral steel pipe (thickness 0.10-0.50mm), and the aramid yarn reinforcement component is used:

• Tensile force: long-term ≥200N, short-term ≥800N
• Dynamic bending radius: ≥20 times the diameter of the optical cable
• Anti-rat bite puncture force: ≥90N (GB/T 29199 test)

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2. Fiber optic transmission characteristics

Fiber Type	1310nm Attenuation (dB/km)	1550nm Attenuation (dB/km)
B1.3/B6	≤0.38	≤0.25
B4	-	≤0.25（1625nm≤0.30）
A1a Multimode	≤1.5	≤3.5（850nm）

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Implementation Suggestions for Typical Application Scenarios

Scenario 1: High-density cabling in data centers

Recommended GJFKH 96B1.3 model:

• Use low-smoke halogen-free flame-retardant sheath (in compliance with YD/T 1113)
• Static bending radius optimized to 30mm
• It is recommended to configure an independent sub-tube for every 48 cores

Scenario 2: 5G fronthaul radio remote

Applicable GJYFKH 2B6a2 model:

• B6 fiber anti-bending performance (10D bending radius)
• Works in a wide temperature range of -40℃~+60℃
• It is recommended to use double-helix steel tube redundant design

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Key points of quality control

1. Material verification: Stainless steel strip must pass GB/T 20878 salt spray test
2. Process control: Spiral wrapping pitch tolerance ≤±5%
3. Test specification:
   • OTDR test sampling point spacing ≤1m
   • Tensile test held for 1 minute (GB/T 7424.21)

YD/T 2488.1-2023 Referenced Document

• GB/T 12357.1-2015 Multimode optical fibers for communication - Part 1: Characteristics of multimode optical fibers of class A1
• GB/T 15972.20-2021 Specifications for optical fibre test methods—Part 20: Measurement methods and test procedures for dimensions—Fibre geometry
• GB/T 15972.22-2008 Specifications for optical fibre test methods.Part 22:Measurement methods and test procedures for dimensions.Length measurement
• GB/T 15972.40-2008 Specifications for optical fibre test methods.Part 40:Measurement methods and test procedures for transmission and optical characteristics.Attenuation
• GB/T 15972.44-2017 Specifications for optical fibre test methods—Part 44: Measurement methods and test procedures for transmission and optical characteristics—Cut-off wavelength
• GB/T 15972.45-2021 Specifications for optical fibre test methods—Part 45: Measurement methods and test procedures for transmission characteristics—Mode field diameter
• GB/T 16422.2-2022 Plastics—Methods of exposure to laboratory light sources—Part 2: Xenon-arc lamps
• GB/T 17650.2-2021 Test on gases evolved during combustion of materials from cables or optical fiber cables—Part 2: Determination of acidity (by pH measurement) and conductivity
• GB/T 17651.2-2021 Measurement of smoke density of cables or optical fiber cables burning under defined conditions—Part 2: Test procedure and requirements
• GB/T 18380.12-2022 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 1 kW pre-mixed flame
• GB/T 18380.35-2022 Tests on electric and optical fibre cables under fire conditions—Part 35: Test for vertical flame spread of vertically-mounted bunched wires or cables—Category C
• GB/T 20878-2007 Stainless and heat-resisting steels Designation and chemical composition
• GB/T 24202 Carbon steel wire for tension members of optical fiber cable
• GB/T 2423.17 Environmental testing Part 2: Test methods Test Ka: Salt spray*， 2024-08-23 Update
• GB/T 26125-2011 Electrical and electronic products.Determination of six regulated substances(lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenl ethers)
• GB/T 26572-2011 Requirements of concentration limits for certain restricted substances in electrical and electronic products
• GB/T 29199-2012 Test methods for rodent resistance of optical fiber cable
• GB/T 2951.11-2008 Common test method for insulating and sheathing materials of electric and optical cables.Part 11:Methods for general application.Measurement of thickness and overall dimensions.Tests for determining the mechanical properties
• GB/T 2951.14-2008 Common test methods for insulating and sheathing materials of electric and optical cables.Part 14:Methods for general application-Test at low temperature
• GB/T 2951.31-2008 Common test methods for insulating and sheathing materials of electric and optical cables.Part31:Methods specific to PVC compounds.Pressure test at high temperature.Test for resistance to cracking
• GB/T 2951.41-2008 Common test method for insulating and sheathing materials of electric and optical cables.Part 41:Methods specific to polyethylene and polypropylene compounds.Resistance to environmental stress cracking.Measurement of the melt flow index.Carbon black and/o
• GB/T 39560.8-2021 Determination of certain substances in electrical and electronic products—Part 8: Phthalates in polymers by gas chromatography-mass spectrometry (GC-MS), gas chromatography-mass spectrometry using a pyrolyzer/thermaldesorption accessory (Py/TD-GC-MS)
• GB/T 6995.2 Markings for electric wires and cables.Part 2:Standard colours
• GB/T 7424.21-2021 Optical fibre cable generic specification—Part 21：Basic optical cable test procedures—Mechanical test methods
• GB/T 7424.22-2021 Optical fibre cable generic specification—Part 22: Basic optical cable test procedures—Environmental test methods
• GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values
• GB/T 8815-2008 Plasticized polyvinyl chloride(PVC) compounds for wire and cable
• GB/T 9352-2008 Plastic.Compression moulding of test specimens of thermoplastic materials
• GB/T 9771.2 Single-mode optical fibres for telecommunication—Part 2: Characteristics of a cut-off wavelength shifted single-mode optical fibre
• GB/T 9771.3 Single-mode optical fibres for telecommunication—Part 3: Characteristics of an extended wavelength band dispersion unshifted single-mode optical fibre
• GB/T 9771.5 Single-mode optical fibres for telecommunication—Part 5: Characteristics of a non-zero dispersion shifted single-mode optical fibre
• GB/T 9771.7 Single-mode optical fibres for telecommunication—Part 7: Characteristics of a bending loss insensitive single-mode optical fibre
• YB/T 098 Steel wire reinforced for optical cable*， 2024-10-24 Update
• YD/T 1113 Halogen-Free, Low Smoke, Flame-Retardant Materials for Communication Cables and Optical Fibers*， 2025-07-02 Update
• YD/T 1181.2 Characteristics of non-metallic strength members for optical cables Part 2: Aramid yarn
• YD/T 1258.1-2015 Indoor optical cables Part 1: General principles
• YD/T 1954 Bend loss insensitive single-mode fiber characteristics
• YD/T 2964 Measurement method for bend loss insensitive single-mode optical fiber for access network
• YD/T 3431-2018 Sheath material thermoplastic polyurethane elastomer for communication cable optical cable
• YD/T 3718-2020 Low-smoke, low-halogen, flame-retardant soft polyvinyl chloride plastic for communication cables and optical cables
• YD/T 3832 Flame retardant polyethylene materials for communication cables and optical cables
• YD/T 629.1 Monitoring method for optical fiber transmission attenuation changes Part 1: Transmission power method
• YD/T 629.2 Methods for monitoring changes in optical fiber transmission attenuation Part 2: Backscattering method
• YD/T 837.3-1996 Test method of copper-core, polyolefin insulated, composite aluminum-plastic sheathed cables for urban local communications Part 3 Test method of mechanical and physical properties
• YD/T 908-2020 Optical cable model naming method

YD/T 2488.1-2023 history

• 2023 YD/T 2488.1-2023 Flexible steel tube armored optical cables Part 1: Circular optical cables

YD/T 2488.1-2023 Flexible steel tube armored optical cables Part 1: Circular optical cables has been changed from YD/T 2488-2013 Flexible steel tube armoured optical fiber cables.

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