1、BSI Standards PublicationJunction boxes for photovoltaic modulesBS EN 50548:2011+A2:2014BS EN 50548:2011+A2:2014National forewordThis British Standard is the UK implementation of EN 50548:2011+A2:2014. It supersedes BS EN 50548:2011+A1:2013, which is withdrawn.The start and finish of text introduced
2、 or altered by amendment is indicated in the text by tags. Tags indicating changes to CENELEC text carry the number of the CEN amendment. For example, text altered by CENELEC amendment A1 is indicated by !“.The UK participation in its preparation was entrusted to Technical Committee GEL/82, Photovol
3、taic Energy 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 correct application. The British Standards Institution 2015.Pub
4、lished by BSI Standards Limited 2015ISBN 978 0 580 86344 8ICS 27.160Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2011.Amendments/corrigenda issued sinc
5、e publicationDate Text affected30 June 2013 Implementation of CENELEC amendment A1:201331 January 2015 Implementation of CENELEC amendment A2:2014BRITISH STANDARDEUROPEAN STANDARD EN 50548 NORME EUROPENNE EUROPISCHE NORM June 2011 CENELEC European Committee for Electrotechnical Standardization Comit
6、 Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50548:2011 E ICS 27.160 Englis
7、h version Junction boxes for photovoltaic modules Botes de jonction pour modules photovoltaques Anschlussdosen fr Photovoltaik-Module This European Standard was approved by CENELEC on 2011-02-14. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the condit
8、ions 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 application to the Central Secretariat or to any CENELEC member. This European Standard exists in thr
9、ee 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 Secretariat has the same status as the official versions. CENELEC members are the national electrotechnic
10、al committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzer
11、land and the United Kingdom. :2011+A2November 2014Contents Foreword . 4 1 Scope . 52 Normative references . 53 Terms and definitions 4 Constructional requirements and performance 4.1 General .4.2 Marking and identification .4.3 Protection against electric shock 4.4 Terminations and connection method
12、s 4.5 Connectors .4.6 Cable 4.7 Resistance to ageing 4.8 General design .4.9 Degree of protection (IP) 4.10 Dielectric strength .4.11 Range of ambient temperature .4.12 Cable anchorage 4.13 Mechanical strength .4.14 Clearances and creepage distances 4.15 Insulation 4.16 Insulation parts .4.17 Curren
13、t carrying parts and resistance against corrosion 4.18 Sealing 4.19 Bypass-diode 4.20 Knock-out inlets (outlets) intended to be removed by mechanical impact .5 Tests .5.1 General .5.2 Preparation of specimens .5.3 Performance of tests 5.4 Test schedule .Annex A (normative) Symbol “Do not disconnect
14、under load“ .Bibliography BS EN 50548:2011+A2:2014 EN 50548:2011+A2:2014 (E) 2 711111112131314141414141515151516171718181818181921314142Figures Figure 1 Thermal cycling test . Figure 2 Humidity-freeze cycle . Figure 3 Typical arrangement for the cable anchorage pull test Figure 4 Typical arrangement
15、 for torsion test. Figure A.1 Symbol “Do not disconnect under load“ . Tables Table 1 Rated impulse voltage . Table 2 Number of specimen . Table 3 Values of torque for screw-type clamping units Table 4 Pull forces for cord anchorage Table 5 Values for torsion test Table 6 Marking, information, docume
16、ntation, test group A . Table 7 Material test, test group B (single tests) Table 8 Constructional requirements, test group C (single tests) Table 9 Mechanical tests, test group D (single tests) Table 10 Test sequence I, test group E (tests to be performed consecutively in this order) . Table 11 Test
17、 sequence II, test group F (tests to be performed consecutively in this order) Table 12 Test sequence III, test group G (tests to be performed consecutively in this order) . Table 13 Test sequence IV, test group H (tests to be performed consecutively in this order) Table 14 Reverse current test, tes
18、t group I BS EN 50548:2011+A2:2014 EN 50548:2011+A2:2014 (E) 3 $Figure 5 Measurement of voltage drop#3838393940411619202930313233343536363737Foreword This European Standard was prepared by the Technical Committee CENELEC TC 82, Solar photovoltaic energy systems. It was submitted to the Formal Vote a
19、nd was approved by CENELEC as EN 50548 on 2011-02-14. 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 were fixed: lat
20、est date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2012-02-14 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2014-02-14 _ Foreword This European Standard was prepare
21、d by the Technical Committee CENELEC TC 82, Solar photovoltaic energy systems. It was submitted to the Formal Vote and was approved by CENELEC as EN 50548 on 2011-02-14. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and CENE
22、LEC shall not be held responsible for identifying any or all such patent rights. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2012-02-14 latest date by which the national s
23、tandards conflicting with the EN have to be withdrawn (dow) 2014-02-14 _ EN 50548:2011/A1:2013-2-Foreword This document (EN 50548:2011/A1:2013) has been prepared by CLC/TC 82 “Solar photovoltaic energy systems“. The following dates are fixed: latest date by which this document has to be implemented
24、at national level by publication of an identical national standard or by endorsement (dop) 2014-04-15 latest date by which the national standards conflicting with this document have to be withdrawn (dow) 2016-04-15 Attention is drawn to the possibility that some of the elements of this document may
25、be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Foreword to amendment A1This document (EN 50548:2011/A2:2014) has been prepared by CLC/TC 82 “Solar photovoltaic energy systems“. The following dates are fixed: latest dat
26、e by which this document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2015-10-13 latest date by which the national standards conflicting with this document have to be withdrawn (dow) 2017-10-13 Attention is drawn to the possibility
27、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 identifying any or all such patent rights. Foreword to amendment A2_ BS EN 50548:2011+A2:2014 EN 50548:2011+A2:2014 (E) 4 1 Scope This European Standard applies to jun
28、ction boxes up to 1 500 V DC for use on photovoltaic modules according to application class A of EN 61730-1:2007. NOTE For junction boxes according to application classes B and C of EN 61730-1:2007 in photovoltaic-systems, this standard can be used as a guideline. 2 Normative references The followin
29、g referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 50521, Connectors for photovoltaic systems Safety requirem
30、ents and tests EN 60060-1, High-voltage test techniques Part 1: General definitions and test requirements (IEC 60060-1) EN 60068-1, Environmental testing Part 1: General and guidance (IEC 60068-1) EN 60068-2-14:2009, Environmental testing Part 214: Tests Test N: Change of temperature (IEC 60068-2-14
31、:2009) EN 60068-2-70, Environmental testing Part 2: Tests Test Xb: Abrasion of markings and letterings caused by rubbing of fingers and hands (IEC 60068-2-70) EN 60068-2-75, Environmental testing Part 275: Tests Test Eh: Hammer tests (IEC 60068-2-75) EN 60068-2-78, Environmental testing Part 278: Te
32、sts Test Cab: Damp heat, steady state (IEC 60068-2-78) EN 60228, Conductors of insulated cables (IEC 60228) EN 60352-2, Solderless connections Part 2: Crimped connections General requirements, test methods and practical guidance (IEC 60352-2) EN 50548:2011/A1:2013 - 2 - Foreword This document (EN 50
33、548:2011/A1:2013) has been prepared by CLC/TC 82 “Solar photovoltaic energy systems“. 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) 2014-04-15 latest date by which the
34、 national standards conflicting with this document have to be withdrawn (dow) 2016-04-15 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 identifying any or all such patent right
35、s. #EN 60352-3, Solderless connections Part 3: Solderless accessible insulation displacement con nections General requirements, test methods and practical guidance (IEC 60352-3) EN 60352-4, Solderless connections Part 4: Solderless non-accessible insulation displacement connections General requireme
36、nts, test methods and practical guidance (IEC 60352-4) EN 60352-5, Solderless connections Part 5: Press-in connections General requirements, test methods and practical guidance (IEC 60352-5) EN 60352-6, Solderless connections Part 6: Insulation piercing connections General requirements, test methods
37、 and practical guidance (IEC 60352-6) EN 60352-7, Solderless connections Part 7: Spring clamp connections; General requirements, test methods and practical guidance (IEC 60352-7)$BS EN 50548:2011+A2:2014 EN 50548:2011+A2:2014 (E) 5 EN 60512-12-1, Connectors for electronic equipment Tests and measure
38、ments Part 121: Soldering tests Test 12a: Solderability, wetting, solder bath method (IEC 60512-12-1) EN 60512-12-2, Connectors for electronic equipment Tests and measurements Part 12-2: Soldering tests Test 12b: Solderability, wetting, soldering iron method (IEC 60512-12-2) EN 60529, Degrees of pro
39、tection provided by enclosures (IP Code) (IEC 60529) EN 60664-1:2007, Insulation coordination for equipment within low-voltage systems Part 1: Principles, requirements and tests (IEC 60664-1:2007) EN 60695-2-11, Fire hazard testing Part 2-11: Glowing/hot-wire based test methods Glow-wire flammabilit
40、y test method for end-products (IEC 60695-2-11) EN 60695-11-10, Fire hazard testing Part 11-10: Test flames 50 W horizontal and vertical flame test methods (IEC 60695-11-10) EN 60695-11-20:1999, Fire hazard testing Part 11-20: Test flames 500 W flame test methods (IEC 60695-11-20:1999) EN 60947-7-1,
41、 Low-voltage switchgear and controlgear Part 7-1: Ancillary equipment Terminal blocks for copper conductors (IEC 60947-7-1) EN 60998-2-1, Connecting devices for low-voltage circuits for household and similar purposes Part 2-1: Particular requirements for connecting devices as separate entities with
42、screw-type clamping units (IEC 60998-2-1) EN 60998-2-2, Connecting devices for low-voltage circuits for household and similar purposes Part 2-2: Particular requirements for connecting devices as separate entities with screwless-type clamping units (IEC 60998-2-2) EN 60998-2-3, Connecting devices for
43、 low-voltage circuits for household and similar purposes Part 2-3: Particular requirements for connecting devices as separate entities with insulating piercing clamping units (IEC 60998-2-3)$#EN 60999-1:2000, Connecting devices Electrical copper conductors Safety requirements for screw-type and scre
44、wless-type clamping units Part 1: General requirements and particular requirements for clamping units for conductors from 0,2 mm up to 35 mm (included) (IEC 60999-1:1999) EN 60999-2, Connecting devices Electrical copper conductors Safety requirements for screw-type and screwless-type clamping units
45、Part 2: Particular requirements for clamping units for conductors above 35 mm up to 300 mm (included) (IEC 60999-2) EN 61032, Protection of persons and equipment by enclosures Probes for verification (IEC 61032) EN 61140:2002, Protection against electric shock Common aspects for installation and equ
46、ipment (IEC 61140:2001) BS EN 50548:2011+A2:2014 EN 50548:2011+A2:2014 (E) 6 EN 61730-1:2007, Photovoltaic (PV) module safety qualification Part 1: Requirements for construction (IEC 61730-1:2004, mod.) EN ISO 868, Plastics and ebonite Determination of indentation hardness by means of a durometer (S
47、hore hardness) (ISO 868:2003) EN ISO 4892-2:2006, Plastics Methods of exposure to laboratory light sources Part 2: Xenon-arc lamps (ISO 4892-2:2006) EN ISO 4892-3, Plastics Methods of exposure to laboratory light sources Part 3: Fluorescent UV lamps (ISO 4892-3:2006) IEC/TR 60943, Guidance concernin
48、g the permissible temperature rise for parts of electrical equipment, in particular for terminals 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 junction box combination of parts, such as boxes, covers, cover-plates, lids, box extensions, accessories, etc., providing after assembly and installation at the photovoltaic-module as in normal use, an appropriate protection against external influences, and a defined protection against contact with enclosed live parts from any accessible direction EN 61191-1, Printed board assemblies P
