1、BRITISH STANDARDBS EN60439-3:1991Incorporating Amendments Nos. 1 and 2 and Corrigendum No. 1Specification forLow-voltage switchgear and controlgear assemblies Part 3: Particular requirements for low-voltage switchgear and controlgear assemblies intended to be installed in places where unskilled pers
2、ons have access to their use Distribution boardsThe European Standard EN 60439-3:1991, with the incorporation of amendment A1:1994 and A2:2001, has the status of a British Standardg49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36
3、g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 60439-3:1991This British Standard was published under the authority of the Standards Board and comes into effect on 28 June 1991 BSI 2006ISBN 0 580 19684 4Cooperating organizationsThe European Committee for Electro
4、technical Standardization (CENELEC), under whose supervision this European Standard was prepared, comprises the National Committees of the following countries.Austria ItalyBelgium LuxembourgDenmark NetherlandsFinland NorwayFrance PortugalGermany SpainGreece SwedenIceland SwitzerlandIreland United Ki
5、ngdomAmendments issued since publicationAmd. No. Date Comments8302 August 1994 See National foreword13466 1 May 2002 See National foreword16213 Corrigendum No. 130 June 2006 Correction to reference of UK A-deviation in Annex ZA BSI 2006iBS EN 60439-3:1991ContentsPageCooperating organizations Inside
6、front coverNational foreword iiForeword 2Text of EN 60439-3 4National appendix NA (informative) 21National appendix NB (informative) 22National appendix NC (informative) 23BS EN 60439-3:1991ii BSI 2006National forewordThe CENELEC common modifications have been implemented at the appropriate places i
7、n the text. The start and finish of each common modification is indicated in the text by tags G8eG8f. Where a common modification has been introduced by amendment, the tags carry the number of the amendment. For example, the common modifications introduced by CENELEC amendment A11 are indicated by G
8、81G82.The start and finish of text introduced or altered by amendment is indicated in the text by tags G21G22. Tags indicating changes to IEC text carry the number of the IEC amendment. For example, text altered by IEC amendment 1 is indicated by G21G22.The foreword and preface of IEC 439-3:1990 whi
9、ch do not form part of the text of EN 60439-3 have been quoted in National appendix NA. The deleted parts of the original IEC text are quoted on page 2 of this European Standard.The foreword of the EN makes reference to “date of withdrawal (dow) of conflicting national standards” as “1994-12-01”. In
10、 this case the relevant national standard is BS EN 60439-3 but the date of withdrawal relates only to those parts of the British Standard subject to Amendment A1. Certificates and marks will not be awarded after this date with respect to the British Standard not incorporating Amendment A1. They will
11、 be awarded only to the amended British Standard. However, such certificates and marks already awarded with respect to the British Standard not incorporating Amendment A1 may continue to apply for production until 1999-12-01.designated “informative” are given for information only. National appendice
12、s are designated “informative”.Cross-referencesDetails of international standards quoted in this British Standard for which there is an identical or technically equivalent British Standard are given in National appendix NC.A British Standard does not purport to include all the necessary provisions o
13、f a contract. Users of British Standards are responsible for their correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2
14、 to 23 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.This British Standard has been prepared under the direction of the Power Electrical Engineering Standards Policy Committee and is the English language version of EN 60439-3 “Low-vo
15、ltage switchgear and controlgear assemblies Part 3: Particular requirements for low-voltage switchgear and controlgear assemblies intended to be installed in places where unskilled persons have access for their use Distribution boards” including amendments A1 and A2, and corrigenda April 1994 and De
16、cember 2005, published by the European Committee for Electrotechnical Standardization (CENELEC). EN 60335-2-6 was derived by CENELEC from IEC 60439-3:1990, which has the same title as the European Standard.Annexes designated “normative” are part of the body of the standard. Annexes The corrigendum,
17、dated April 1994, adds a new Annex ZA which gives an A-deviation for the UK and supersedes BS 5486-13:1989 which is withdrawn. The corrigendum, dated December 2005, replaces the reference of the A-deviation for the UK. EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 60439-3February 1991+A1April 19
18、94+A2June 2001UDC 621.316.54:621.3.027.2:620.1:614.8 Incorporating corrigenda April 1994 and December 2005Descriptors: Low voltage switchgear, assemblies, unskilled personsEnglish versionLow-voltage switchgear and controlgear assemblies Part 3: Particular requirements for low-voltage switchgear and
19、controlgear assemblies intended to be installed in places where unskilled persons have access for theiruse Distribution boards(includes amendments A1:1994 and A2:2001)(IEC 60439-3:1990, modified)Ensembles dappareillage basse tension Troisime partie: Rgles particulires pour ensembles dappareillage BT
20、 destins tre installs en des lieux accessibles des personnes non qualifies pendant leur utilisation Tableaux de rpartition(inclut les amendements A1:1994 et A2:2001)(CEI 60439-3:1990, modifie)Niederspannung-Schaltgerte-kombinationen Teil 3: Besondere Anforderungen an Niederspannung-Schaltgerte-kombi
21、nationen, zu deren Bedienung Laien Zutritt haben Installationsverteiler(enthlt nderungen A1:1994 und A2:2001)(IEC 60439-3:1990, modifiziert)This European Standard was approved by CENELEC on 10 December 1990; itsamendment A1 was approved by CENELEC on 1993-12-08 and amendment A2was approved by CENELE
22、C on 2001-05-01. CENELEC members are bound tocomply with the CEN/CENELEC Internal Regulations which stipulate theconditions for giving this European Standard the status of a national standardwithout any alteration.Up-to-date lists and bibliographical references concerning such nationalstandards may
23、be obtained on application to the Central Secretariat or to anyCENELEC member.This European Standard exists in three official versions (English, French,German). A version in any other language made by translation under theresponsibility of a CENELEC member into its own language and notified to theCe
24、ntral Secretariat has the same status as the official versions.CENELEC members are the national electrotechnical committees of Austria,Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland andUnited Kingdom.C
25、ENELECEuropean Committee for Electrotechnical StandardizationComit Europen de Normalisation ElectrotechniqueEuropisches Komitee fr Elektrotechnische NormungCentral Secretariat: rue de Stassart 35, B-1050 Brussels 1994 Copyright reserved to CENELEC membersRef. No. EN 60439-3:1991 + A1:1994 + A2:2001
26、EEN 60439-3:1991 BSI 20062ForewordFollowing the decision taken by CENELEC Technical Committee TC 17D at their Brussels meeting in October 1989, the International Standard IEC 60439-3:1990, together with the common modifications prepared by CLC/TC 17D, was submitted to the CENELEC Unique Acceptance P
27、rocedure (UAP) in April 1990 for acceptance as a European Standard.The text of the draft was approved by CENELEC as EN 60439-3 on 10 December 1990. The following dates were fixed:For products which have complied with the relevant national standard before 1991-12-01, as shown by the manufacturer or b
28、y a certification body, this previous standard may continue to apply for production until 1996-12-01.Endorsement noticeThe text of the International Standard IEC 439-3: 1990 was approved by CENELEC as a European Standard with agreed common modifications as given below. Common modificationsForeword t
29、o A1:1994The text of document 17D(CO)53, as prepared by Sub-Committee 17D: Low voltage switchgear and controlgear assemblies, of IEC Technical Committee 17: Switchgear and controlgear, was submitted to the IEC-CENELEC parallel vote in September 1992.The reference document was approved by CENELEC as
30、amendment A1 to EN 60439-3 on 8 December 1993.The following dates were fixed: For products which have complied with EN 60439-3:1991 before 1994-12-01, as shown by the manufacturer or by a certification body, this previous standard may continue to apply for production until 1999-12-01.Foreword to A2:
31、2001The text of document 17D/239/FDIS, future amendment 2 to IEC 60439-3:1990, prepared by SC 17D, Low-voltage switchgear and controlgear assemblies, of IEC TC 17, Switchgear and controlgear, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as amendment A2 to EN 60439-3:199
32、1 on 2001-05-01.The following dates were fixed: latest date of publication of an identical national standard (dop) 1991-12-01 latest date of withdrawal of conflicting national standards (dow) 1991-12-017.6.1 Replace the text by:Fuses for outgoing circuits shall comply with the general requirements o
33、f IEC 60269-3 or with a relevant national standard where it is an established practice for such use. latest date of publication of an identical national standard (dop) 1994-12-01 latest date of withdrawal of conflicting national standards (dow) 1994-12-01 latest date by which the amendment has to be
34、 implemented at national level by publication of an identical national standard or by endorsement (dop) 2002-02-01 latest date by which the national standards conflicting with the amendment have to be withdrawn (dow) 2004-05-01EN 60439-3:1991 BSI 20063ContentsPageForeword 21General 42 Definitions 43
35、 Classification of assemblies 54 Electrical characteristics of assemblies 55 Information to be given regarding the assembly 66 Service conditions 67 Design and construction 68 Test specifications 9Annex ZA (informative) A-deviations 16Table 1 5Table 7 List of type tests to be performed 9Table 7a Seq
36、uence of type tests 10Table 7b List of routine tests to be performed 10Table 13 Tightening torques for the verification of mechanical strength 12Table 12 14Table 101 Requirements for final circuit protective devices: Miniature Circuit Breakers complying with BS 3871-1 17Table 102 Requirements for fi
37、nal circuit protective devices: Semi-enclosed fuses complying with BS 3036 and cartridge fuses complying with BS 1361, type 1 17Table 103 Cross sections of copper conductors on load side of protective device under test 18Table 104 Preparation for test B 19Figure 1 Ball pressure test apparatus 13Figu
38、re 101 Test circuit to prove coordination of characteristics 20EN 60439-3:19914 BSI 20061 General1.1 ScopeReplace the second note by:This standard gives supplementary requirements for such enclosed distribution boards (DBU), which are stationary, type tested assemblies (TTA) for indoor use, containi
39、ng protective devices and intended for use either in domestic (household) applications or in other places where unskilled persons have access for their use. Control and/or signalling devices may also be included. They are for use on a.c., with a nominal voltage to earth not exceeding 300 V. The outg
40、oing circuits contain short-circuit protective devices, each having a rated current not exceeding 125 A with a total incoming load current not exceeding 250 A.NOTE The nominal voltage to earth in an IT system is taken as the nominal voltage of the system.Unskilled persons normally have access to the
41、se assemblies, e.g. for switching operations and for replacing fuse-links. G21G222 Definitions2.1 General definitions 2.1.1.2partially type tested assembly (PTTA)not applicable2.1.9test situationnot applicableG232.1.12G24distribution boardan assembly containing switching or protective devices (e.g.
42、fuses or miniature circuit-breakers) associated with one or more outgoing circuits fed from one or more incoming circuits, together with terminals for the neutral and protective circuit conductors. It may also include signalling and other control devices. Means of isolation may be included in the bo
43、ard or may be provided separately2.2 Definitions concerning constructional units of assemblies2.2.8withdrawable partnot applicable2.2.9connected positionthe position of a removable part when it is fully connected for its normally intended function2.2.10test positionnot applicable2.2.11disconnected p
44、ositionnot applicable2.3 Definitions concerning the external design of assemblies2.3.1open-type assemblynot applicable2.3.2dead front assemblynot applicableEN 60439-3:1991 BSI 200652.3.3.3desk-type assemblynot applicable2.3.4busbar trunking system (busway)not applicable2.4 Definitions concerning the
45、 structural parts of assembliesG232.4.18G24parts for aesthetic purposesparts which are provided only to improve the appearance of an assembly and are not intended to give any electrical or mechanical protection2.5 Definitions concerning the conditions of installation of assemblies2.5.4movable assemb
46、lynot applicable2.7gangways within assembliesnot applicable3 Classification of assembliesDelete: the conditions of installation with respect to mobility (see 2.5.3 and 2.5.4);G23 the form of internal separation (see 7.7); the types of electrical connections of functional units (see 7.11).G244 Electr
47、ical characteristics of assemblies4.2 Rated current (of a circuit of an assembly)Renumber existing 4.2 to read 4.2.1.Add a new sub-clause:4.2.2 Rated current of a distribution boardThe rated current of a distribution board is that stated by the manufacturer as the rated current of the incoming circu
48、it or circuits. If there is more than one incoming circuit the rated current of a distribution board is the arithmetic sum of the rated currents of all incoming circuits that are intended to be used simultaneously. This current or currents shall be carried without the temperature rise of the several
49、 parts exceeding the limits specified in 7.3 when tested according to 8.2.1.G23 4.7 G24 Rated diversity factorReplace the note and Table 1 by the following:For the purpose of this standard the number of main circuits is the number of outgoing circuits connected to each supply phase. In the absence of information concerning the actual currents, the conventional values given in Table 1 may be used. Table 1G23G24Number of main circuits Diversity factor2 and 34 and 56 to 9 inclusi
