YD/T 1820-2008
Telecommunication Cables Central Office.Symmetrical Cables (English Version)

Standard No.

YD/T 1820-2008

Language

Chinese, Available in English version

Release Date

2008

Published By

Professional Standard - Post and Telecommunication

Latest

YD/T 1820-2008

Replace

YD/T 817-1996 YD/T 818-1996

Scope

This standard specifies the product classification, requirements, test methods, inspection rules, marking, packaging, storage and transportation requirements for communication cables - symmetrical cables for office use. This standard is applicable to symmetrical communication cables (hereinafter referred to as cables) for connection between program-controlled switching equipment and between the main distribution frame in the switching office and the user circuit board in the switching office. It can also be used as a cable within or between other communication equipment. Short length of connecting cable.

YD/T 1820-2008 Referenced Document

• GB 6995.2-1986 Markings for electric cables and wires--Part 2:Standard colours
• GB 730-1998 Textiles--Tests for colour fastness--Blue wool standards for colour fastness to light and weathering
• GB/T 11327.1-1999 Low-frequency telecommunication cables and wires with PVC insulation and PVC sheath. Part 1: General test and measuring methods
• GB/T 11327.2-1999 Low-frequency telecommunication cable and wires with PVC insulation and PVC sheath. Part 2: Cables in pairs, triples, quads and quintuples for inside installation
• GB/T 18380.1-2001 Tests on electric cables under fire conditions Part 1: Test on a single vertical insulated wire or cable
• GB/T 18380.3-2001 Tests on electric cables under fire conditions Part 3: Test on bunched wires or cables
• 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 2951.2-1997 Common test methods for insulating and sheating materials of electric cables. Part 1: Methods for general application. Section two: Thermal ageing methods
• GB/T 2951.3-1997 Common test methods for insulating and sheathing materials of electric cables. Part 1: Methods for general application. Section three: Methods for determining the density--Water absorption tests--Shrinkage test
• GB/T 2951.4-1997 Common test methods for insulating and sheating material of electric cables. Part 1: Methods for general application. Section four: Test at low temperature
• GB/T 2951.7-1997 Common test methods for insulating and sheathing materials of electric cables. Part 3: Methods specific to PVC compounds. Section two: Loss of mass test--Thermal stability test
• GB/T 3953 Electrician round copper wire*， 2024-03-15 Update
• GB/T 4910 Tinned round copper wire*， 2022-07-11 Update
• GB/T 5441.2-1985 Test methods for communication cable--Capacitance test--Bridge 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 837.4-1996 Test method of copper-core, polyolefin insulated, composite aluminum-plastic sheathed cables for urban local communications Part 4 Test method of environmental performances

YD/T 1820-2008 history

• 2008 YD/T 1820-2008 Telecommunication Cables Central Office.Symmetrical Cables
• 1996 YD/T 818-1996 PVC insulated PVC sheathed digital local symmetrical cable

YD/T 1820-2008 Telecommunication Cables Central Office.Symmetrical Cables has been changed from YD/T 817-1996 PVC insulated PVC sheathed cable for program-controlled switching office.

YD/T 1820-2008 Telecommunication Cables Central Office.Symmetrical Cables has been changed from YD/T 818-1996 PVC insulated PVC sheathed digital local symmetrical cable.