DD IEC PAS 62255-1:2001 pdf download Multi-pair cables used in high bit rate digital access telecommunication networks — Part 1: Outdoor cables
Scope
This specification defines outdoor multi-pair cables for use in high bit rate digital telecommunicationnetworks with their relative definitions and requirementst covers water tight cables, with an overall screen, characterised up to 30 MHz, to be used inoutdoor networks (for example in the subscriber access loop).The electrical, mechanical, transmission performance characteristics of the screened cablesrelated to their reference test methods, are detailed.
1.1 Normative references
This standard incorporates by dated or undated reference, provisions from other publications.These normative references are cited at the appropriate places in the text and the citedpublications are listed hereafter. For dated references, subsequent amendments to or revisions ofthese publications apply to this PAS only when incorporated in it by amendment or revision. Forundated references, the latest edition of the cited publication applies, together with anyamendments.
EC 61156-1, Multicore and Symmetrical Pair/Quad Cables for Digital Communications :Part 1.Generic specification
IEC 60028:1925,International standard of resistance for copperIEC 60050，International Electrotechnical Vocabulary (IEV)IEC60068，Environmental testing
EC 60304:1982, Standard colours for insulation for low-frequency cables and wiresEC 60344:1980, Guide to the calculation of resistance of plain and coated copper con
ductors of low-frequency cables and wiresEC 60811-1, Common test methods for insulating and sheathing materials of electriccables – Part 1: Methods for general applicationEC 60811-1-2:1985. Common test methods for insulating and sheathing materials ofelectric cables – Part 1: Methods for general application – Section Two: Thermal ageingmethods
EN 50289: Communication cables – Specifications for test methods (Series)EN 50290: Basic Reference Standard for Communication Cables (Series)
1.2 Terminology
For the purpose of this PAS, the definitions of EC 61156-1 apply in addition to the following ones
Subscriberloop
Bit Rate
ADSL Asymmetric Digital Subscriber Lines
ATM Asynchronous Transfer Mode
DSL Digital Subcriber Line
EMC Electro-Magnetic Compatibility
EMI Electro-MagneticInterference
ESAN Full Service Access Network
HDSL High-bit-rate Digital Subscriber Lines
ISDN Integrated Digital Services Network
ISDN-BRAISDN -Basic Rate Access
ISDN-PRAISDN -Primary Rate Access
Mbps Mega-bits per second
TBD to be determined
VDSL Very-high-bit-rate Digital Subscriber Lines
xDSL Generic term referring to all DSLS,ISDN, HDSL,ADSLVDSL, …
2 Generalinformation
2.1 General cable description
These cables are designed for outdoor telecommunication networks, therefore they are water-tightcables
Since these cables are specifically designed for new, various existing and emerging,telecommunication applications that involve high frequency spectrum up to 30 MHz, they includean overall screen to improve the electromagnetic behaviour.These cables contain from one pair up to 150 pairs that can be either in pairs or quads.
2.2 Environment and product safety requirement
2.3 Testing
For all test procedures described in this section, the test conditions shall be the standardatmospheric conditions (23 5 C, and 20-70 % relative humidity), unless otherwise stated. Almeasured and computed values are to be rounded to the number of decimal places given in thecorresponding requirement.
The parameters specified in this standard may be affected by measurement uncertainty arisingeither from measurement errors or calibration errors due to a lack of suitable standards.Acceptance criteria shall be interpreted with respect to this consideration.
3 REQUIREMENTS FOR CONDUCTOR
3.1 Construction and dimensions.
The conductor shall consist of annealed copper, uniform in quality and free from defects. Theproperties of the copper shall be in accordance with IEC 60028
The conductor shall be solid, circular in section. Normally the conductor shall be drawn in onepiece. Joints in the conductor are permitted, provided that the tensile strength of a joint is not lessthan 85 % of the un-jointed solid conductor.
The diameter of the conductor shall be between 0.4 mm to 0.8 mm.
3.2 Mechanical requirements
The conductor elongation at break shall be tested according to IEC 61156-1 subclause 3.4.2 andshall be between 15 and 20 % depending on the conductor size.
3.3 Electrical requirements.
DD IEC PAS 62255-1:2001 pdf download
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