ANSI BICSI NECA-607-2011 Standard for Telecommunications Bonding and Grounding Planning and Installation Methods for Commercial Buildings.pdf

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1、 TStandard forTelecommunications Bonding andGrounding Planning and InstallationMethods for Commercial BuildingsNECA/BICSI 607-2011An AmericanNational StandardPublished byNational ElectricalContractors AssociationDeveloped jointly withBICSIiii Table of Contents Foreword . v 1. Scope 1 2. Normative Re

2、ferences . 2 3. Definitions, Abbreviations and Acronyms, Units of Measurement 3 3.1 General 3 3.2 Definitions 3 3.3 Abbreviations and acronyms . 4 3.4 Units of measurement . 4 4. Regulatory 5 4.1 National requirements . 5 4.2 Local code requirements 5 5. Components . 6 5.1 Conductor . 6 5.2 Busbar .

3、 6 5.2.1 Telecommunications main grounding busbar (TMGB) 6 5.2.2 Telecommunications grounding busbar (TGB) 6 5.3 Bonding connector 6 5.3.1 Compression . 6 5.3.2 Mechanical 6 5.3.3 Exothermic 7 6. Planning 8 6.1 General 8 6.1.1 Bonding to the electrical power system 8 6.1.2 Primary protector 8 6.2 Bo

4、nding conductor 8 6.2.1 General 8 6.2.2 Size . 8 6.2.3 Usage 8 6.3 Busbar . 9 6.3.1 Telecommunications main grounding busbar (TMGB) 9 6.3.2 Telecommunications grounding busbar (TGB) 9 6.4 Bonding connections . 9 6.5 Connections to the TMGB/TGB . 10 6.5.1 Electrical distribution panel (EDP) . 10 6.5.

5、2 Building steel 10 6.5.3 Conduit . 10 6.5.4 Telecommunications equipment bonding conductor (TEBC) . 10 iv NECA/BICSI 607 Telecommunications Bonding and Grounding Planning and Installation Methods for Commercial Buildings 6.6 Bonding equipment, racks and cabinets 10 6.6.1 General 10 6.6.2 Example A

6、11 6.6.3 Example B . 11 6.6.4 Example C . 11 6.6.5 Rack isolation 12 7. Installation Requirements . 13 7.1 General 13 7.1.1 Safety 13 7.1.2 Bonding to the electrical power system 13 7.1.3 Primary protector 13 7.1.4 Equipment room (ER) . 13 7.1.5 Telecommunication room (TR) 13 7.1.6 Backbone cables w

7、ith shields . 13 7.2 Bonding conductors 13 7.3 Bonding connections . 14 7.4 Telecommunications main grounding busbar/telecommunications grounding bus- bar TMGB/TGB 14 7.4.1 Installation of the TMGB/TGB . 14 7.4.2 Connections between a TMGB/TGB and an EDP 14 7.5 Bonding the TBB, GE, TEBC, UBC, or RBC

8、 to the TMGB or the TGB . 14 7.5.1 General 14 7.5.2 Installation 15 7.6 Routing the TEBC from the TMGB/TGB to the rack/cabinet 18 7.6.1 General 18 7.6.2 Bends 19 7.6.3 Separation . 19 7.7 Bonding equipment cabinets/ equipment racks to the TEBC . 19 7.7.1 Structural bonding of equipment cabinets/equi

9、pment racks . 20 7.8 Bonding equipment to the rack bonding conductor or rack grounding busbars 20 7.9 Bonding cable runways and cable trays 20 7.9.1 General 20 7.9.2 Installation 22 7.10 Ancillary bonding . 22 7.11 Two-point ground/continuity testing . 22 7.12 Inspection 23 Annex A: Bibliography and

10、 references (informative) . 24 v (This foreword is not a part of the standard) Foreword Introduction National Electrical Installation Standards(NEIS) are designed to improve communication among speci- fiers, purchasers, and suppliers of electrical construc- tion services. They define a minimum basel

11、ine of quality and workmanship for installing electrical prod- ucts and systems. NEIS are intended to be referenced in contract documents for electrical construction pro- jects. The following language is recommended: Telecommunications bonding and grounding planning and installations shall be instal

12、led in accordance with NECA/BICSI 607-2011, Standard for Bonding and Grounding Planning and Installation Methods for Commercial Buildings. The National Electrical Contractors Association (NECA) asked BICSI, a Telecommunications Association, together undertook the task of develop- ing this grounding

13、and bonding standard for telecommunications systems and equipment. NECA-BICSI standards are developed within the Technical Committees of BICSI and NECA. Members of the respective committees serve voluntarily and without compensation. The companies they repre- sent are not necessarily members of BICS

14、I or NECA. The standards developed by these committees repre- sent a consensus of the broad expertise from within BICSI and NECA as well as from those outside that have an expressed interest. The viewpoint expressed at the time this standard was approved was from the contributors experience and the

15、state of the industry at that time. Users are encouraged to confirm that they have the latest edition of this standard. NECA- BICSI reviews its standards, at the minimum, every 5 years. At that time standards are reaffirmed, rescinded or revised accordingly. Any suggested revisions to be included in

16、 the next edition should be sent to NECA or BICSI. This standard has been prepared by BICSI/NECA under the joint jurisdiction of BICSI and NECA and approved by consensus ballot in accordance with the requirements of the American National Standards Association (ANSI). Use of NEIS is voluntary, and ne

17、ither NECA nor BICSI assume any obligation or liability to users of this publication. Existence of a standard shall not preclude any member or non- member of either organization from specifying or using alternate construction methods permitted by applicable regulations. This publication is intended

18、to comply with the edition of the National Electrical Code(NEC) in effect at the time of publication. Because they are quality standards, NEIS may exceed the minimum safety requirements of the NEC. It is the responsibility of users of this publication to com- ply with state and local regulations whe

19、n installing electrical products and systems. Suggestions for revisions and improvements to this standard should be addressed to: NECA Standards either discharging directly to the ground itself or to structures in contact with ground. vi NECA/BICSI 607 Telecommunications Bonding and Grounding Planni

20、ng and Installation Methods for Commercial Buildings Electrical transients must return to their source, many times following similar ground paths. In either event, proper bonding reduces the harmful effects associated with these electrical events. Metallic components for power distribution systems a

21、re bonded together to provide an effective ground- fault current path to allow proper operation of over- current devices. For telecommunications systems, metallic components are bonded to provide a low impedance path for electrical surges and transient voltages to return to their power source. The e

22、arth is also involved as a path for grounded (earthed) power systems and for lightning events. Lightning, fault cur- rents, circuit switching (motors starting and stop- ping), and electrostatic discharge (ESD) are common causes of surges and transient voltages. An effective bonding and grounding sys

23、tem helps to minimize the damaging effects of electrical surges. Proper bonding and grounding of electrical and information transport systems (ITS) infrastructure facilitates their intended operation. Improperly bonded and grounded electrical systems are a prima- ry cause of power quality issues, wh

24、ich may affect information technology (IT) systems operation. Other performance items related to bonding and grounding for telecommunications within a building involve power systems, surge protective devices, and electromagnetic compatibility (EMC). IEEE 1100- 2005 contains recommended practices on

25、these and related subjects. Purpose The purpose of this standard is to allow the designer and installer to enhance their knowledge of effective telecommunications bonding and grounding systems and to strive for installations in a neat and workman- like manner. The principles and requirements of this

26、 standard are focused upon the North American region.Specification of criteria Two categories of criteria are specified; mandatory and advisory. The mandatory requirements are designated by the word “shall“: advisory recommendations are designated by the words “should”, “may“, or “desir- able“, whic

27、h are used interchangeably in this standard. Mandatory criteria generally apply to protection, per- formance, administration, and compatibility; they specify the absolute minimum acceptable require- ments. Advisory or desirable criteria are presented when their attainment would enhance the general p

28、er- formance of the cabling system in all its contemplated applications. A note in the text, table, or figure is used for emphasis or offering informative suggestions. Metric equivalents of U.S. customary units The majority of the metric dimensions in this stan- dard are soft conversions of U.S. cus

29、tomary units (e.g., 100 millimeters mm is the soft conversion of 4 inches in). Wire diameters shown in brackets are approximate wire diameters (e.g., 6 AWG (4.1 mm (0.16 in) Life of the standard This standard is a living document. The criteria con- tained in this standard are subject to revisions an

30、d updating as warranted by advances in building con- struction techniques and telecommunications tech- nology. Annexes Annex A is informative and not considered a require- ment of this standard. Copyright 2011, National Electrical Contractors Association. All rights reserved. Unauthorized reproducti

31、on prohibited. National Electrical Installation Standards and NEIS are trade- marks of the National Electrical Contractors Association. BICSI is a registered trademark of BICSIA Telecommunications Association, Tampa, FL. National Electrical Code and NEC are registered trademarks of the National Fire

32、 Protection Association, Quincy, MA. Photos and art provided by BICSI. 1 1. Scope This American National Standard specifies aspects of planning and installation of telecommunications bonding and grounding systems within a commercial building (see figure 1). This standard is intended to enhance the p

33、lanning, specification and layout of an effective telecommunications bonding and grounding system. Additionally, this standard specifies installa- tion requirements for components of the telecom- munications bonding and grounding system. Figure 1. Example illustration of a telecommunications bonding

34、 and grounding system 2 2. Normative References The following standards and related applicable addenda contain provisions that, through reference in this text, constitute provisions of this standard: IEEE C2-2007, National Electrical Safety Code ANSI/J-STD-607-A-2002, Commercial Building Grounding (

35、Earthing) and Bonding Requirements for Telecommunications NFPA 702011, National Electrical Code NFPA 70E2004, Standard for Electrical Safety in the Workplace At the time of publication, the editions listed above were current. As standards are subject to revision, users of this standard are encourage

36、d to review and apply the latest published edition. 3 3. Definitions, Abbreviations and Acronyms, Units of Measurement3.1 General This clause contains definitions of terms, abbrevia- tions, acronyms, and units of measurement that have a special meaning or that are unique to the technical content of

37、this standard. Specific requirements are found in the normative subclauses of this standard. The terms that are used in only one clause may be defined at the beginning of that clause. 3.2 Definitions bonded (bonding): Connected to establish electri- cal continuity and conductivity. (NEC) bonding con

38、ductor for telecommunications (BCT): A conductor that interconnects the buildings service or buildings feeder equipment (power) ground to the telecommunications grounding system. common bonding network (CBN): The principal means for effecting bonding and grounding inside a telecommunication building

39、. It is the set of metallic components that are intentionally or incidentally interconnected to form the principal bonding net- work (BN) in a building. These components include structural steel or reinforcing rods, plumbing, alter- nating current (ac) power conduit, ac equipment grounding conductor

40、s (ACEGs), cable racks, and bonding conductors. The CBN always has a mesh topology and is connected to the grounding electrode system. coupled bonding conductor (CBC): A separate conductor in contact with, routed with, and secured to a communications cable. It may also be a metallic shield enclosing

41、 all of the conductors in a communi- cations cable. ground: The earth. (NEC) grounded (grounding): Connected (connecting) to ground or to a conductive body that extends the ground connection. (NEC) grounding equalizer (GE): A bonding conductor that interconnects TGBs on the same floor, (formerly TBB

42、IBC). primary protector: A surge protective device placed on telecommunications entrance conductors in accordance with ANSI/NFPA 70 and ANSI/ATIS 0600318. point of entrance: Within a building, the point at which the wire or cable emerges from an external wall, from a concrete floor slab, or from a r

43、igid metal conduit or an intermediate metal conduit grounded to an electrode. rack bonding conductor (RBC): A bonding con- ductor used to connect the rack/cabinet directly to the telecommunications main grounding busbar (TMGB), telecommunications grounding busbar (TGB), telecommunications equipment

44、bonding conductor (TEBC), or equipment room/computer room signal reference grid (SRG)/signal reference structure (SRS)/common bonding network (CBN). signal reference structure (SRS): A system of conductive paths among interconnected equipment that reduces noise-induced voltages to levels that minimi

45、ze improper operation. Common configura- tions include grids (e.g., SRGs) and planes. telecommunications bonding backbone (TBB): A copper conductor used to connect the telecommunications main grounding busbar (TMGB) to the telecommunications grounding bus- bar (TGB) located on the floor farthest awa

46、y. 4 NECA/BICSI 607 Telecommunications Bonding and Grounding Planning and Installation Methods for Commercial Buildings telecommunications equipment bonding conductor (TEBC): A bonding conductor that extends from the telecommunications main grounding bus-bar (TMGB) or telecommunications grounding bu

47、s-bar (TGB) to either a rack grounding busbar or a rack bonding conductor. telecommunications grounding busbar (TGB):A common point of connection for telecommunica- tions system and equipment bonding to ground and located in the telecommunications rooms (TR) and equipment room (ER). telecommunicatio

48、ns main grounding busbar (TMGB): A busbar placed in a convenient and acces- sible location and bonded, by means of the bonding conductor for telecommunications, to the building service equipment (power) ground. unit bonding conductor (UBC): A bonding con- ductor used to connect a rack/cabinet mounte

49、d equipment unit to the grounding structure (i.e., con- ductor, busbar) utilized in that rack/cabinet. 3.3 Abbreviations and acronyms ac alternating current AHJ authority having jurisdiction ANSI American National Standards Institute AWG American wire gauge BCT bonding conductor for telecommunica- tions CBC coupled bonding conductor CBN common bonding network EDP electrical distribution panel EMC electromagnetic compatibility ENT electrical nonmetallic tubing ER equi