UL 869A-2006 UL Standard for Safety Reference Standard for Service Equipment (Fourth Edition)《服务设备的参考标准》.pdf

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1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL 869AISBN 0-7629-1233-2Reference Standard forService EquipmentUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NO

2、T AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUnderwriters Laboratories Inc. (UL)333 Pfingsten RoadNorthbrook, IL 60062-2096UL Standard for Safety for Reference Standard for Service Equipment, UL 869AFourth Edition, Dated November 10, 2006Summary of TopicsThis new ed

3、ition of UL 869A is being issued through ULs electronic publishing system toensure format uniformity between the PDF and HTML versions of the document. Whilenumbering and figure placement, where appropriate, may have been updated, no substantivechanges have been incorporated in the document.As indic

4、ated on the title page (page1), this UL Standard for Safety has been adopted by the Departmentof Defense.The UL Foreword is no longer located within the UL Standard. For information concerning the use andapplication of the requirements contained in this Standard, the current version of the UL Forewo

5、rd islocated on ULStandardsInfoNet at: http:/ master for this Standard at ULs Northbrook Office is the official document insofar as it relates to aUL service and the compliance of a product with respect to the requirements for that product and service,or if there are questions regarding the accuracy

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12、. ULs support policies may change fromtime-to-time without notification.NOVEMBER 10, 2006 UL 869A tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL reserves the right to change the format, presentation, file types and formats, delivery met

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16、ne copy of the Standard may be stored ona single LAN file-server, or on the permanent storage device of a multiple-user computer, or on an Intranetserver. The number of concurrent users shall not exceed the number of users authorized.Electronic Standards are intended for on-line use, such as for vie

17、wing the requirements of a Standard,conducting a word search, and the like. Only one copy of the Standard may be printed from eachsingle-user version of an electronic Standard. Only one copy of the Standard may be printed for eachauthorized user of a multiple-user version of an electronic Standard.

18、Because of differences in thecomputer/software/printer setup used by UL and those of electronic Standards purchasers, the printedcopy obtained by a purchaser may not look exactly like the on-line screen view or the printed Standard.An employee of an organization purchasing a UL Standard can make a c

19、opy of the page or pages beingviewed for their own fair and/or practical internal use.The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, figures,and/or other elements of the Standard having future effective dates as indicated in the note following the

20、affected item. The prior text for requirements that have been revised and that have a future effective dateare located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice.New product submittals made prior to a specified future effective date will be judged under all of therequir

21、ements in this Standard including those requirements with a specified future effective date, unlessthe applicant specifically requests that the product be judged under the current requirements. However, ifthe applicant elects this option, it should be noted that compliance with all the requirements

22、in thisStandard will be required as a condition of continued Listing, Classification, Recognition and Follow-UpServices after the effective date, and understanding of this should be signified in writing.Copyright 2006 Underwriters Laboratories Inc.This Standard consists of pages dated as shown in th

23、e following checklist:Page Date1-28 .November 10, 2006NOVEMBER 10, 2006 UL 869Atr2UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNOVEMBER 10, 20061UL 869AReference Standard for Service EquipmentPrior to the first edition, the requirements for

24、 the products covered by thisstandard were included in the Standard for Service Equipment, UL 869.First Edition March, 1987Second Edition June, 1993Third Edition June, 1998Fourth EditionNovember 10, 2006An effective date included as a note immediately following certain requirementsis one established

25、 by Underwriters Laboratories Inc.The Department of Defense (DoD) has adopted UL 869A on November 16, 1987.The publication of revised pages or a new edition of this Standard will notinvalidate the DoD adoption.Revisions of this Standard will be made by issuing revised or additional pagesbearing thei

26、r date of issue. A UL Standard is current only if it incorporates themost recently adopted revisions, all of which are itemized on the transmittal noticethat accompanies the latest set of revised requirements. Comments or proposalsfor revisions on any part of the Standard may be submitted to UL at a

27、ny time.Proposals should be submitted via a Proposal Request in ULs On-LineCollaborative Standards Development System (CSDS) at http:/.ISBN 0-7629-1233-2COPYRIGHT 2006 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM

28、 ULNOVEMBER 10, 2006REFERENCE STANDARD FOR SERVICE EQUIPMENT - UL 869A2No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .42 General 42.1 Components .42.2 Units of measurement .52.3 Undated referen

29、ces .53 Glossary .5CONSTRUCTION4 Wiring Terminals 65 Equipment-Grounding Terminals 76 Disconnecting Means 96.1 General .96.2 Neutral disconnect .106.3 Transfer equipment 116.4 Multiple source equipment 137 Ground Fault Protection 138 Overcurrent Protection 179 Provision for Bonding and Grounding .17

30、10 Spacings 19PERFORMANCE11 Ground Fault Protection System Test .21MANUFACTURING AND PRODUCTION TEST12 Ground Fault Protection Equipment Test 21RATINGS13 General 22MARKINGS14 General 2214.1 Bonded neutral 2214.2 Insulated neutral .2314.3 Marking location 2314.4 Disconnects .2314.5 Ground fault prote

31、ction 2414.6 Rating 2514.7 Sources in parallel 2514.8 Equipment grounding .25INSTALLATION INSTRUCTIONS15 Field Testing of Ground Fault Protection of Equipment 27NOVEMBER 10, 2006 REFERENCE STANDARD FOR SERVICE EQUIPMENT - UL 869A 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDIS

32、TRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 This standard provides specific service equipment requirements that are intended to besupplemented by requirements for other types of equipment (such as panelboards, switchboards, and thelike) that may be used as service equipment.1.2 A prod

33、uct that contains features, characteristics, components, materials, or systems new or differentfrom those covered by the requirements in this standard, and that involve a risk of fire, electric shock, orinjury to persons shall be evaluated using the appropriate additional component and end-productre

34、quirements as determined necessary to maintain the acceptable level of safety as originally anticipatedby the intent of this standard. A product whose features, characteristics, components, materials, orsystems conflict with specific requirements or provisions of this standard cannot be judged to co

35、mply withthis standard. Where considered appropriate, revision of requirements shall be proposed and adopted inconformance with the methods employed for development, revision, and implementation of this standard.2 General2.1 Components2.1.1 Except as indicated in 2.1.2, a component of a product cove

36、red by this standard shall comply withthe requirements for that component.2.1.2 A component need not comply with a specific requirement that:a) Involves a feature or characteristic not needed in the application of the component in theproduct covered by this standard orb) Is superseded by a requireme

37、nt in this standard.2.1.3 A component shall be used in accordance with its recognized rating established for the intendedconditions of use.2.1.4 Specific components are recognized as being incomplete in construction features or restricted inperformance capabilities. Such components are intended for

38、use only under limited conditions, such ascertain temperatures not exceeding specified limits, and shall be used only under those specific conditionsfor which they have been recognized.NOVEMBER 10, 2006REFERENCE STANDARD FOR SERVICE EQUIPMENT - UL 869A4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURT

39、HER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL2.2 Units of measurement2.2.1 If a value for measurement is followed by a value in other units in parentheses, the first stated valueis the requirement.2.3 Undated references2.3.1 Any undated reference to a code or standard appearing in the r

40、equirements of this standard shallbe interpreted as referring to the latest edition of that code or standard.3 Glossary3.1 For the purpose of this standard, the following definitions apply.3.2 EQUIPMENT GROUNDING CONDUCTOR The conductor used to connect the noncurrent-carrying metal parts of the equi

41、pment, raceways, and other enclosures to the grounded serviceconductor, to the grounding electrode conductor, or to both at the service equipment, as shown inFigure 3.1.This is generated text for figtxt.3.3 GROUNDED SERVICE CONDUCTOR The supply conductor that is intentionally grounded at theservice,

42、 usually referred to as neutral. See Figure 3.1.Figure 3.1Grounding and bonding connections for grounded systems at the service equipmentNOVEMBER 10, 2006 REFERENCE STANDARD FOR SERVICE EQUIPMENT - UL 869A 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMIS

43、SION FROM UL3.4 GROUNDING ELECTRODE CONDUCTOR The conductor used to connect the groundingelectrode to the grounded service conductor or to the equipment grounding conductor, or to both, at theservice equipment as shown in Figure 3.1.3.5 MAIN BONDING JUMPER The conductor used for the connection betwe

44、en the grounded serviceconductor and the equipment grounding conductor at the service. See Figure 3.1.3.6 SERVICE EQUIPMENT Equipment, usually consisting of a circuit breaker, switch, or fuses, andrelated accessories, located near the point of entrance of supply conductors to a building or otherstru

45、cture and intended to constitute the main control and means of cutoff of the supply.CONSTRUCTION4 Wiring Terminals4.1 Equipment intended to be used as service equipment shall be provided with wiring terminals inaccordance with the end-use standard.Exception: Equipment intended to supply a dwelling u

46、nit from a single-phase, 120/240 volt, 3-wiresystem may have line wiring terminals sized for the conductors having the ampere rating shown in Table4.1 if marked as specified in 14.6.1.Table 4.1Dwelling unit conductorsTypes and sizesCopper, Aluminum and copper-clad aluminum,AWG or kcmil (mm2) AWG or

47、kcmil (mm2) Ampacity, amperes4 21.1 2 33.6 1003 26.7 1 42.4 1102 33.6 1/0 53.5 1251 42.4 2/0 67.4 1501/0 53.5 3/0 85.0 1752/0 67.4 4/0 107 2003/0 85.0 250 127 2254/0 107 300 152 250250 127 350 177 300350 177 500 253 350400 203 600 304 4004.2 A wiring terminal provided for the connection of a service

48、 conductor rated 40 amperes or less shallbe capable of accommodating a No. 8 AWG (8.4 mm2) copper conductor. The terminal shall also becapable of accommodating a No. 6 AWG (13.3 mm2) aluminum conductor if the equipment is marked foruse with aluminum wire.4.3 A connection that depends upon solder sha

49、ll not be provided for the connection of the serviceconductors, the main bonding jumper, or the grounding electrode conductor.NOVEMBER 10, 2006REFERENCE STANDARD FOR SERVICE EQUIPMENT - UL 869A6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL4.4 A terminal for a grounded service conductor shall be provided for a conductor of a size in accordancewith one of the following:a) Same size as the ungrounded service conductors.b) Reduced siz