1、BSI Standards PublicationBS EN 50386:2010Bushings up to 1 kV and from 250 A to 5 kA, for liquid filled transformersBS EN 50386:2010+A1: 3BS EN 50386:2010+A1:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 50386:2010+A1:2013. It supersedes BS EN 50386:2010 w
2、hich is withdrawn.The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to CENELEC text carry the number of the CENELEC amendment. For example, text altered by CENELEC amendment A1 is indicated by .The UK participation in its prepar
3、ation was entrusted to Technical Committee PEL/36, Insulators for power systems.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its cor
4、rect application. The British Standards Institution 2013. Published by BSI Standards Limited 2013ISBN 978 0 580 82506 4ICS 29.180Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strate
5、gy Committee on 30 November 2010.Amendments/corrigenda issued since publicationDate Text affected31 August 2013 Implementation of CENELEC amendment A1:2013BS EN 50386:2010EUROPEAN STANDARD EN 50386 NORME EUROPENNE EUROPISCHE NORM October 2010 ICS 29.180 Supersedes EN 50386:2002English version Bushin
6、gs up to 1 kV and from 250 A to 5 kA, for liquid filled transformers Traverses jusqu 1 kV et de 250 A 5 kA, pour transformateurs remplissage de liquide Durchfhrungen bis 1 kV und von 250 A bis 5 kA fr flssigkeitsgefllte Transformatoren This European Standard was approved by CENELEC on 2010-10-01. CE
7、NELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on
8、 application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Sec
9、retariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg,
10、 Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 50386:2010+A1August 2013BS EN 50386:2010EN 50386:2010 2 Foreword This European Standard was prepared by the Technical Committee CENELEC TC 36A, Insulated bushings. It
11、 was submitted to the Unique Acceptance Procedure and was accepted by CENELEC as EN 50386 on 2010-10-01. This document supersedes EN 50386:2002. This edition, compared to EN 50386:2002, improves and facilitates the interchangeability of bushings, and improves dimensions settings for interchangeabili
12、ty and requirements of mechanical test. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights. The following dates are proposed: latest date by
13、which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2011-10-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2013-10-01 _ BS EN 50386:2010+A1:2013EN 50386:2010+A1:2013 2 - 3 - E
14、N 50386:2010/A1:2013 Foreword This document (EN 50386:2010/A1:2013) has been prepared by CLC/TC 36A “Insulated bushings“. The following dates are fixed: latest date by which this document has to be implemented at national level by publication of an identical national standard or by endorsement (dop)
15、 2014-07-01 latest date by which the national standards conflicting with this document have to be withdrawn (dow) 2016-07-01 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for iden
16、tifying any or all such patent rights. Foreword to amendment A1BS EN 50386:2010 3 EN 50386:2010 Contents 1 Scope 42 Normative references 43 Requirements 43.1 Application .43.2 Standard value of rated voltage (Ur) .43.3 Standard values of rated current (Ir) .43.4 Minimum nominal creepage distance .43
17、.5 Dielectric characteristics .53.6 Dimensions and components 53.7 Cantilever load withstand test .7 Bibliography 8 Figures Figure 1 Type 1 - 3 bushings (250 A to 630 A) 5Figure 2 Type 4 - 8 bushings (1 250 A to 5 000 A) 5 Tables Table 1 Minimum nominal creepage distance 4Table 2 Standard dimensions
18、 6Table 3 Cantilever test load 7Table 4 List of components 7 BS EN 50386:2010 3 EN 50386:2010 Contents 1 Scope 42 Normative references 43 Requirements 43.1 Application .43.2 Standard value of rated voltage (Ur) .43.3 d v s of rated current (Ir) .43.4 Minimum nominal creepage distance .43.5 Dielectri
19、c characteristics .53.6 Dimensions and components 53.7 Cantilever load withstand test .7 Bibliography 8 Figures Figure 1 Type 1 - 3 bushings (250 A to 630 A) 5Figure 2 4 - 8 bushings (1 250 A to 5 000 A) 5 Tables able 1 Minimum nominal creepage distance 4ble 2 Standard dimensions 6ble 3 Cantilever t
20、est load 7ble 4 List of components 7 BS EN 50386:2010+A1:2013EN 50386:2010+A1:2013 3 - 3 - EN 50386:2010/A1:2013 Foreword This document (EN 50386:2010/A1:2013) has been prepared by CLC/TC 36A “Insulated bushings“. The following dates are fixed: latest date by which this document has to be implemente
21、d at national level by publication of an identical national standard or by endorsement (dop) 2014-07-01 latest date by which the national standards conflicting with this document have to be withdrawn (dow) 2016-07-01 Attention is drawn to the possibility that some of the elements of this document ma
22、y be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. 3.8 Temperature rise 8Bibliography .9BS EN 50386:2010EN 50386:2010 4 Introduction The object of this European Standard is to specify the requirements and the dimensions
23、of bushings for voltages up to 1 000 V and rated currents from 250 A up to 5 000 A for insulating liquid filled transformers. 1 Scope This European Standard is applicable to ceramic insulated bushings for rated voltages up to 1 000 V, rated currents from 250 A up to 5 000 A and frequencies from 15 H
24、z up to 60 Hz for insulating liquid filled transformers. NOTE These bushings are suitable for operation at 1,1 kV in compliance with EN 50464-1. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition ci
25、ted applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 60137, Insulated bushings for alternating voltages above 1 000 V (IEC 60137) 3 Requirements 3.1 Application Bushings covered by this standard shall be suitable for operation with
26、 one end partially or fully immersed in an insulating liquid and with the other end in air. 3.2 Standard value of rated voltage (Ur) The rated voltage Uris 1 000 V (phase to phase). When a bushing is used only partially immersed, a reduced rated voltage shall be agreed between the purchaser and the
27、manufacturer. 3.3 Standard values of rated current (Ir) The values of Ir of a bushing shall be chosen from the standard values as given below, in amperes: 250 - 630 1 250 - 2 000 - 3 150 - 4 000 - 5 000 3.4 Minimum nominal creepage distance The minimum nominal creepage distance for bushing ends inte
28、nded for use in air, is given in Table 1. Table 1 Minimum nominal creepage distance IrA 250 630 1 250 3 150 4 000 5 000 Minimum nominal creepage distance mm 55 (standard type) 115 (extended type) a70 75 85 aType with extended creepage distance. BS EN 50386:2010+A1:2013EN 50386:2010+A1:2013 4 EN 6013
29、7:2008, Insulated bushings for alternating voltages above 1 000 V (IEC 60137:2008)BS EN 50386:2010 5 EN 50386:2010 d1L3L1tL2d3d4d5d2d7L4L5d65913486101171223.5 Dielectric characteristics Power-frequency withstand voltage (60 s): dry and wet 10 kV Lightning impulse withstand voltage (1,2/50 s): 20 kV
30、When a bushing is used only partially immersed, the reduced dielectric characteristics shall be agreed between the purchaser and the manufacturer. 3.6 Dimensions and components Figure 1 and Figure 2 show the basic construction of the bushings and the dimensions covered by this standard. They do not
31、purport to show constructional details. Customized bushings are subject to agreement between purchaser and manufacturer. The dimensions shall be as specified in Table 2. The list of components is given in Table 4. d1L3L1tL2d2d5d3d7d4d6L5L411413348610117122Figure 1 Type 1 - 3 bushings Figure 2 Type 4
32、 - 8 bushings (250 A to 630 A) (1 250 A to 5 000 A) NOTE 1 Internal terminal connections are not defined in this standard. NOTE 2 This is a basic design.BS EN 50386:2010+A1:2013EN 50386:2010+A1:2013 5 BS EN 50386:2010EN50386:2010 6 Table2StandarddimensionsTypesIrl1max.l2min.tmax.d1d2max.d320+d4max.l
33、3min.d5max.d6max.d7max.l4max.l5max.A mm mm mm mm mm mm mm mm mm mm mm mm mm 1 250 138 30 6 M12 56 28 60 40 56 43 27 70 70 2 250 a170 30 6 M12 56 34 60 30 70 43 33 70 70 3 630 178 30 6 M20 70 45 85 65 70 56 43 80 82 4 1250 200 35 6 M30 2 90 56 110 70 90 68 54 95 62 5 2000 240 35 10 M42 3 104 70 125 9
34、0 104 85 68 120 72 6 3150 250 35 10 M48 3 125 90 150 90 125 100 87 120 75 7 4000 300 40 10 M55 3 160 118 180 110 180 129 115 135 87 8 5000 310 40 10 M64 3or58 b160 118 180 110 180 135 115 140 110 aType with extended creepage distance.bPlain terminations are allowed butare limited tothelength l3.BS E
35、N 50386:2010+A1:2013 EN 50386:2010+A1:20136 BS EN 50386:2010 7 EN 50386:2010 3.7 Cantilever load withstand test For all test methods and procedures, refer to EN 60137. Table 3 Cantilever test load Types IrA F N Cantilever Test load 1 250 4002 250 a4003 630 5004 1 250 600 5 2 000 1 000 6 3 150 1 600
36、7 4 000 1 600 8 5 000 1 600 aType with extended creepage distance. These are only test values for type testing and can not be considered for operating load. The connection of the bushings has to be mechanical stress relive. Table 4 List of components Item Designation Remarks1 Terminal stud Types 1 -
37、 3: Brass Types 4 - 8: Copper If brass is used for types 4 - 8 or if aluminium-alloy for all types the rated current Irshall be reduced subject to an agreement. 2 Conductor Formed as terminal stud, busbar or flange 3 Nut 4 Pressure plate 5 Pressure plate Only for types 4 8 6 Ceramic body 7 Insulatio
38、n body 8 Gasket insulating liquid resistant material 9 Gasket Only for types 4 8, insulating liquid resistant material 10 Gasket insulating liquid resistant material 11 Packing Only necessary if material of insulation body item 7 is ceramic 12 Packing Only necessary if material of insulation body it
39、em 7 is ceramic 13 Washer Only for types 1 - 3 14 Spring washer Only for types 1 - 3 BS EN 50386:2010+A1:2013EN 50386:2010+A1:2013 7 BS EN 50386:2010+A1:2013EN 50386:2010+A1:2013 8 EN 50386:2010/A1:2013 - 4 -2 Normative referencesReplace the reference by the following:EN 60137:2008, Insulated bushin
40、gs for alternating voltages above 1 000 V (IEC 60137:2008)Add the following after 3.73.8 Temperature rise Bushings Ir 3 150 A shall be in accordance with the maximal temperature rise given in EN 60137:2008, Table 2. Bushings Ir 3 150 A: the maximum temperature rise is 5 K more than the figures state
41、d in EN 60137:2008, Table 2. Test results will be influenced by test method and external connection arrangement; these will be agreed between purchaser and supplier. BS EN 50386:2010EN 50386:2010 8 Bibliography EN 50464-1, Three-phase oil-immersed distribution transformers 50 Hz, from 50 kVA to 2 50
42、0 kVA with highest voltage for equipment not exceeding 36 kV - Part 1: General requirements EN 62155, Hollow pressurized and unpressurized ceramic and glass insulators for use in electrical equipment with rated voltages greater than 1 000 V (IEC 62155) IEC Guide 109 and CENELEC TC 111X document 1),
43、Environmental aspects - Inclusion in electrotechnical product standards NOTE It is highly recommended to minimize the impact of bushings on the environment during all phases of their life (including manufacturing, operation during service life, dismantling after their end of life and disposal or rec
44、ycling). IEC Guide109 and document by CENELEC TC 111X )“Environmental standardization for electrical and electronic products and systems” after finalization can be used as helpful reference. 1)Under development. BS EN 50386:2010+A1:2013EN 50386:2010+A1:2013 9 EN 50386:2010/A1:2013 - 4 - 2 Normative
45、references Replace the reference by the following: EN 60137:2008, Insulated bushings for alternating voltages above 1 000 V (IEC 60137:2008) Add the following after 3.7 3.8 Temperature rise Bushings Ir 3 150 A shall be in accordance with the maximal temperature rise given in EN 60137:2008, Table 2.
46、Bushings Ir 3 150 A: the maximum temperature rise is 5 K more than the figures stated in EN 60137:2008, Table 2. Test results will be influenced by test method and external connection arrangement; these will be agreed between purchaser and supplier. This page deliberately left blankThis page deliber
47、ately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is incorporated by Royal Charter. British Standards and other standardization products are published by BSI Standards Limited.British Standards
48、Institution (BSI)BSI Group Headquarters389 Chiswick High Road London W4 4AL UKAbout usWe bring together business, industry, government, consumers, innovators and others to shape their combined experience and expertise into standards -based solutions.The knowledge embodied in our standards has been c
49、arefully assembled in a dependable format and refined through our open consultation process. Organizations of all sizes and across all sectors choose standards to help them achieve their goals.Information on standardsWe can provide you with the knowledge that your organization needs to succeed. Find out more about British Standards by visiting our website at bs
