1、 T568.1-2-05(ANSI/TIA-568-B.1-2-2003)Commercial building telecommunications cabling standard Part 1: General requirements Addendum 2 Grounding and bonding specifications for screened balanced twisted-pair horizontal cabling CSA Standard T568.1-2-05 (ANSI/TIA-568-B.1-2-2003) Commercial building telec
2、ommunications cabling standard Part 1: General requirements Addendum 2 Grounding and bonding specifications for screened balanced twisted-pair horizontal cabling Published in May 2005 by Canadian Standards Association A not-for-profit private sector organization 5060 Spectrum Way, Suite 100, Mississ
3、auga, Ontario, Canada L4W 5N61-800-463-6727 416-747-4044 Visit our Online Store at www.ShopCSA.ca Commercial building telecommunications cabling standard Part 1: General requirements Addendum 2 Grounding and bonding T568.1-2-05 specifications for screened balanced twisted-pair horizontal cabling CSA
4、/2 Canadian Standards Association May 2005 T568.1-2-05 Commercial building telecommunications cabling standard Part 1: General requirements Addendum 2 Grounding and bonding specifications for screened balanced twisted-pair horizontal cabling CSA Preface This is the first edition of CSA T568.1-2, Com
5、mercial building telecommunications cabling standard Part 1: General requirements Addendum 2 Grounding and bonding specifications for screened balanced twisted-pair horizontal cabling. This Standard is an adoption of the identically titled ANSI/TIA (American National Standards Institute/Telecommunic
6、ations Industry Association) Standard 568-B.1-2-2003 and is the product of the Telecommunications Industry Association TR-42 Technical Committee, which included a number of Canadian members in order to ensure that Canadian perspectives and requirements were addressed. It is written in SI (metric) un
7、its with yard/pound (imperial) units in parentheses. This Standard has been adopted with no technical deviations. Where code requirements or regulations necessitate changes from US to Canadian references, they should be made by the user, as follows: (a) Throughout this Standard, replace the term “Am
8、erican” with “Canadian”, as applicable. (b) Throughout this Standard, replace the term “state” with “provincial or territorial”, as applicable. (c) Throughout this Standard, replace “NEC” with “CE Code, Part I” (Canadian Electrical Code), as applicable. In addition, (i) where reference is made to “c
9、onduit”, replace it with “conduit/EMT” (electrical metallic tubing) because, in accordance with the Canadian Electrical Code, Part I, EMT is not considered a type of conduit; and (ii) the definitions of the following terms are to be taken from the Canadian Electrical Code, Part I: “Bonding”, “Ground
10、”, and “Raceway”. (d) Throughout this Standard, where reference is made to “FCC”, replace it with “CRTC” (Canadian Radio-television and Telecommunications Commission), or “Industry Canada”, as applicable. (e) The following Standards, published by the Canadian Standards Association, are adoptions of
11、TIA/EIA Standards. The requirements of these CSA Standards take precedence over the TIA/EIA Standards on which they are based; any reference in CSA T568.1-2 to the TIA/EIA Standard is to be replaced by a reference to the equivalent Canadian Standard: (i) T568.1-05, Commercial building telecommunicat
12、ions cabling standard Part 1: General requirements; and Commercial building telecommunications cabling standard Part 1: General requirements Addendum 2 Grounding and bonding T568.1-2-05 specifications for screened balanced twisted-pair horizontal cabling May 2005 Canadian Standards Association CSA/3
13、 (ii) T568.2-05, Commercial building telecommunications cabling standard Part 2: Balanced twisted-pair cabling components. (f) Throughout this Standard, replace the term “Listed” with “Approved as applied to electrical equipment”. This Standard was reviewed for Canadian adoption by the CSA Technical
14、 Committee on Telecommunications Wiring Systems, under the jurisdiction of the Strategic Steering Committee on Information and Communications Technology, and has been formally approved by the Technical Committee. A list of the members of the Technical Committee is available upon request. May 2005 Ca
15、nadian Standards Association 2005 All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher. TIA material is reprinted with permission. Inquiries regarding this CSA Standard should be addressed to Canadian Standards Associ
16、ation 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6 1-800-463-6727 416-747-4044 www.csa.ca TIA STANDARD ANSI/TIA-568-B.1-2-2003 Approved: February 25, 2003 Commercial Building Telecommunications Cabling Standard Part 1: General Requirements Addendum 2 Grounding and Bonding Speci
17、fications for Screened Balanced Twisted-Pair Horizontal Cabling TIA-568-B.1-2 (Addendum No. 2 to TIA/EIA-568-B.1) FEBRUARY 2003 TELECOMMUNICATIONS INDUSTRY ASSOCIATION Representing the telecommunications industry in association with the Electronic Industries Alliance NOTICE TIA Engineering Standards
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23、he cognizance of the TIA TR-42.1 Subcommittee on Commercial Building Telecommunications Cabling.) Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION 2003 Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 22201 U.S.A. All rights reserved NOTICE OF DISCLAIMER AND LIMITATION OF
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35、cument is copyrighted by the TIA and may not be reproduced without prior permission of the Telecommunications Industry Association. For information consult our website at http:/www.tiaonline.org/about/faqDetail.cfm?id=18 Organizations may obtain permission to reproduce a limited number of copies thr
36、ough entering into a license agreement. For information, contact: Global Engineering Documents 15 Inverness Way East Englewood, CO 80112-5704 U.S.A. or call U.S.A. and Canada 1-800-854-7179, International (303) 397-7956 TIA-568-B.1-2 GROUNDING AND BONDING SPECIFICATIONS FOR SCREENED BALANCED TWISTED
37、-PAIR HORIZONTAL CABLING TABLE OF CONTENTS 1 INTRODUCTION.1 2 PURPOSE AND SCOPE.1 3 NORMATIVE REFERENCES .1 4 DEFINITIONS, ACRONYMS parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated. ANSI and TIA
38、 maintain registers of currently valid national standards published by them. ANSI/TIA/EIA-568-B.1, Commercial Building Telecommunications Standard Part 1: General Requirements, 2001 ANSI/TIA/EIA-568-B.2, Commercial Building Telecommunications Cabling Standard Part 2: Balanced Twisted-Pair Cabling Co
39、mponents, 2001 ANSI/TIA/EIA-569-A, Commercial Building Standard for Telecommunications Pathways and Spaces, 1998 ANSI/TIA/EIA-606-A, Administration Standard for the Telecommunications Infrastructure of Commercial Buildings, 2002 ANSI/TIA/EIA-J-STD-607-A, Commercial Building Grounding (Earthing) & Bo
40、nding Requirements for Telecommunications standard, 2002 4 DEFINITIONS, ACRONYMS & ABBREVIATIONS 4.1 Definitions The generic definitions in this section have been formulated for use by the entire family of telecommunications infrastructure standards. As such, the definitions do not contain mandatory
41、 requirements of the Standard. Specific requirements are found in the normative sections of this Standard. bonding: The permanent joining of metallic parts to form an electrically conductive path that will ensure electrical continuity and the capacity to conduct safely any current likely to be impos
42、ed. bonding conductor: A conductor that interconnects the screened balanced twisted-pair horizontal cabling infrastructure to the telecommunications grounding busbar. earthing: See grounding. effectively grounded: For a definition see the NEC. ground: A conducting connection, whether intentional or
43、accidental, between an electrical circuit (e.g., telecommunications) or equipment and the earth, or to some conducting body that serves in place of earth. grounding: The act of creating a conducting connection, whether intentional or accidental, between an electrical circuit (e.g., telecommunication
44、s) or equipment and the earth, or to some conducting body that serves in place of earth. 1 TIA-568-B.1-2 telecommunications grounding busbar: A common point of connection for telecommunications system and equipment bonding to ground, and located in the telecommunications room or equipment room. 4.2
45、Acronyms and abbreviations EMC Electromagnetic compatibility NRTL Nationally recognized testing laboratory TGB Telecommunications grounding busbar TO Telecommunications outlet 5 GROUNDING CONSIDERATIONS 5.1 Corrections and revisions to ANSI/TIA/EIA-568-B.1 The purpose of this clause is to revise cla
46、use 4.6 of ANSI/TIA/EIA-568-B.1. These revisions are identified in the following text with additions shown in bold italics and deletions shown as strikeout. 4.6 Grounding considerations Grounding systems are an integral part of the signal or telecommunications cabling system that they support. In ad
47、dition to helping protect personnel and equipment from hazardous voltages, a proper grounding system may improve the EMC performance of the reduce electromagnetic interference (EMI) to and from the telecommunications cabling system. Improper grounding can produce induced voltages and those voltages
48、can disrupt other telecommunications circuits. Grounding and bonding shall meet the requirements and practices of applicable authorities or codes. In addition, telecommunications grounding/bonding shall conform to ANSI/TIA/EIA-J-STD-607-A ANSI/TIA/EIA-607 requirements. The screen shield of ScTP cabl
49、es shall be bonded through a conducting path to the telecommunications grounding busbar (TGB) in the telecommunications room (see subclause 10.2.5). Grounding of equipment at the work area is usually accomplished through the ground conductor of the equipment power connection. If present, screen Shield connections to at the work area equipment shall be are accomplished through the screen of an ScTP work area patch cord extending from the TO to the equipment. At the work area end of the horizontal cabling, the voltage measured be
