Standard No.:	YD/T 901-2001
English Name:	Optical Fiber Cables for Core Network-Loose Tube Stranding Type of Outdoor Optical Fiber Cables for Telecommunication
Chinese Name:	核心网用光缆-层绞式通信用室外光缆
Professional Classification:	YD    Professional Standard - Telecommunication
Issued by:	CMII
Issued on:	2001-4-24
Implemented on:	2001-7-1
Status:	valid
Superseding:	YD/T 901-1997 层绞式通信用室外光缆
Language:	English
File Format:	PDF
Word Count:	9000 words
Price(USD):	270.0
Delivery:	via email in 1 business day

Optical fiber cables for core network — Loose tube stranding type of outdoor optical fiber cables for telecommunication 1 Scope This Standard specifies the product classification, requirements, test methods, inspection rules, marking, instructions for use, packaging, transportation and storage requirements for loose tube stranding type of outdoor optical fiber cables for telecommunication (hereinafter referred to as optical fiber cables). This standard applies to outdoor optical fiber cables for core networks, as well as outdoor optical fiber cables for metropolitan area networks (MAN) and access networks (AN). 2 Normative references The following standards contain provisions which, through reference in this standard, constitute provisions of this standard. At the time of publication, all editions listed are valid. All normative references are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the latest editions of the normative standards indicated below. 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 GB/T 2951.38-1986 Termite test methods for wires and cables GB/T 2952-1989 Protective coverings for electric cables GB 6995.2-1986 Markings for electric cables and wires — Part 2: Standard colours GB/T 7424.1-1998 Optical fibre cables — Part 1: General specification (eqv IEC 794-1: 1996) GB/T 9771-200X The series of single mode optical fibres for telecommunication GB/T 15972.2-1998 Generic specification for optical fibres — Part 2: Measuring methods for dimensions (eqv IEC 793-1-2: 1995) GB/T 15972.3-1998 Generic specification for optical fibres — Part 3: Measuring methods for mechanical characteristics (eqv IEC 793-1-3: 1995) GB/T 15972.4-1998 Generic specification for optical fibres — Part 4: Measuring methods for transmission and optical characteristics (eqv IEC 793-1-4: 1995) GB/T 12666.2-1990 Test method on electric wires or cables under fire conditions — Part 2: Test on a single vertical insulated wire or cable GB 15065-1994 Black polyethylene compounds for wire and cable GB/T 17651-1998 Measurement of smoke density of cables burning under defined conditions (idt IEC 61034: 1997) JB/T 8137-1995 Delivery drums for electric wires and cables YD/T 629-1993 Monitoring methods for optical fibre transmission attenuation change YD/T 723-1994 Laminated metal plastic strip for communication cable and optical fibre cable YD/T 837-1996 Test method of copper-core, polyolefin insulated, composite aluminum-plastic sheathed cables for urban local communications YD/T 839-2000 Filling compounds and flooding compounds for telecommunication cable and optical fibre cable YD/T 908-2000 Naming rules for type of optical fibre cables YD/T 1115-2001 Waterblocking materials for telecommunication cable and optical fiber cable YD/T 1113-2001 Characteristics of Low-Smoke Halogen-Free and Flame Retardant Compound for Optical Cable Jacketing YD/T 1118.1-2001 Secondary coating materials used for optical fiber — Part 1: Polybutylene terephthalate ITU-T G.650(2000) Definition and test methods for single-mode optical fibre IEC 60794-1-2(1999) Optical fibre cables — Part 1-2: Generic specification — Basic optical cable test procedures 3 Product classification The optical fiber cables are classified in accordance with those specified in Clause 1.4 of GB/T 7424.1-1998, and have their types, specifications and compilation models classified in accordance with YD/T 908-2000. 3.1 Type 3.1.1 The main structural types of optical fiber cables and their names are as follows: GYTA: Gel-filling loose tube stranding type of outdoor optical fiber cables for telecommunication with metal reinforcing member and aluminum-polyethylene bonded sheath; GYTA53: Gel-filling loose tube stranding type of outdoor optical fiber cables for telecommunication with metal reinforcing member, aluminum-polyethylene bonded sheath, longitudinal corrugated steel tape armor and polyethylene jacket; GYTA33: Gel-filling loose tube stranding type of outdoor optical fiber cables for telecommunication with metal reinforcing member, aluminum-polyethylene bonded sheath, single thin round steel wire armor and polyethylene jacket; GYTA333: Gel-filling loose tube stranding type of outdoor optical fiber cables for telecommunication with metal reinforcing member, aluminum-polyethylene bonded sheath, double thin round steel wire armor and polyethylene jacket; GYTS: Gel-filling loose tube stranding type of outdoor optical fiber cables for telecommunication with metal reinforcing member and steel-polyethylene bonded sheath; GYTS333: Gel-filling loose tube stranding type of outdoor optical fiber cables for telecommunication with metal reinforcing member, steel-polyethylene bonded sheath, double thin round steel wire armor and polyethylene jacket; GYTS43: Gel-filling loose tube stranding type of outdoor optical fiber cables for telecommunication with metal reinforcing member, steel-polyethylene bonded sheath, single thin round steel wire armor and polyethylene jacket; GYTY53: Gel-filling loose tube stranding type of outdoor optical fiber cables for telecommunication with metal reinforcing member, polyethylene sheath, longitudinal corrugated steel tape armor and polyethylene jacket; GYFTY: Gel-filling loose tube stranding type of outdoor optical fiber cables for telecommunication with non-metal reinforcing member and polyethylene sheath. The type of optical fiber cables used in deep-water shall be stipulated separately. 3.1.2 Applicable laying modes and special conditions for different types See Table 1 for the applicable laying modes and special conditions for main types and derived types of optical fiber cables for special purposes such as flame retardant and termite prevention.

Foreword i 1 Scope 2 Normative references 3 Product classification 4 Requirements 5 Test methods 6 Inspection rules 7 Marking and instructions for use 8 Packaging, transportation and storage Annex A (Normative) Characteristic requirements of silica-based single-mode optical fiber