1、BSI Standards PublicationBS EN ISO 5826:2014Resistance welding equipment Transformers Generalspecifications applicable to alltransformersBS EN ISO 5826:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 5826:2014.It supersedes BS EN ISO 5826:2003 which is
2、withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee WEE/29, Resistance welding.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Us
3、ers are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 75461 6ICS 25.160.30; 29.180Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the autho
4、rity of theStandards Policy and Strategy Committee on 28 February 2014.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 5826 February 2014 ICS 25.160.30; 29.180 Supersedes EN ISO 5826:2003English Version Resistance welding equipment - Tran
5、sformers - General specifications applicable to all transformers (ISO 5826:2014) Matriel de soudage par rsistance - Transformateurs - Spcifications gnrales applicables tous les transformateurs (ISO 5826:2014) Widerstandsschweieinrichtungen - Transformatoren - Allgemeine Anforderungen anwendbar fr al
6、le Transformatoren (ISO 5826:2014) This European Standard was approved by CEN on 3 February 2014. CEN 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
7、-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translat
8、ion under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland,
9、Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION CO
10、MIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 5826:2014 EBS EN ISO 5826:2014EN ISO 5826:2014 (E
11、) 3 Foreword This document (EN ISO 5826:2014) has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes” in collaboration with Technical Committee CEN/TC 121 “Welding and allied processes” the secretariat of which is held by DIN. This European Standard shall be given the statu
12、s of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2014, and conflicting national standards shall be withdrawn at the latest by August 2014. Attention is drawn to the possibility that some of the elements of this document may be the subjec
13、t of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 5826:2003. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement thi
14、s European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovaki
15、a, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 5826:2014 has been approved by CEN as EN ISO 5826:2014 without any modification. BS EN ISO 5826:2014ISO 5826:2014(E) ISO 2014 All rights reserved iiiContents PageForeword v1 Scope . 12 Normativ
16、e references 13 Terms and definitions . 14 Symbols and abbreviated terms . 35 Construction, additional equipment 45.1 Thermal protection . 45.2 Output current sensing coil 46 Physical environment and operating conditions 56.1 General . 56.2 Ambient air temperature . 56.3 Humidity . 56.4 Altitude 56.
17、5 Transportation and storage . 56.6 Provisions for handling 56.7 Cooling liquid temperature 67 Tests . 67.1 Test conditions 67.2 Type tests . 67.3 Routine tests . 78 Protection against electric shock 78.1 Insulation resistance 78.2 Dielectric strength 78.3 Calibration of output current sensing coil
18、88.4 Protection against electric shock in normal service (direct contact) 98.5 Protection against electric shock in case of fault condition (indirect contact) . 98.6 Class II transformer insulation requirements 99 Thermal rating 99.1 General . 99.2 Limits of temperature rise . 109.3 Heating test con
19、ditions . 119.4 Methods of temperature measurements . 1310 Rated output voltage .1510.1 General 1510.2 a.c. no-load voltage (U20) 1510.3 d.c. no-load voltage (U2d) 1511 No-load input current (I10) .1511.1 General 1511.2 Measurement procedure . 1612 Short-circuit voltage (Ucc) 1613 Output current und
20、er load condition 1614 Cooling liquid circuit .1715 Dynamic behaviour .1716 Rating plate .1716.1 General 1716.2 Description 1817 Instruction manual .20BS EN ISO 5826:2014ISO 5826:2014(E)iv ISO 2014 All rights reservedAnnex A (informative) Example of a rating plate 21Annex B (normative) Corrections f
21、or higher altitudes and cooling medium temperatures .22Annex C (informative) Notes on physical concepts and comments on some definitions 23Annex D (informative) Type code for single-phase transformers for alternating welding current 29Bibliography .30BS EN ISO 5826:2014ISO 5826:2014(E)ForewordISO (t
22、he International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical commit
23、tee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotech
24、nical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted
25、in accordance with the editorial rules of the ISO/IEC Directives, Part 2. www.iso.org/directivesAttention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Detai
26、ls of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received. www.iso.org/patentsAny trade name used in this document is information given for the convenience of users and does not constitute an endorseme
27、nt.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible
28、 for this document is ISO/TC 44, Welding and allied processes, Subcommittee SC 6, Resistance welding and allied mechanical joining.This third edition cancels and replaces the second edition (ISO 5826:1999), which has been technically revised.Requests for official interpretations of any aspect of thi
29、s standard should be directed to the Secretariat of ISO/TC 44/SC 6 via your national standards body, a complete listing of which can be found at www.iso.org. ISO 2014 All rights reserved vBS EN ISO 5826:2014BS EN ISO 5826:2014Resistance welding equipment Transformers General specifications applicabl
30、e to all transformers1 ScopeThis International Standard gives specifications applicable to the following types of transformers for use in resistance welding equipment: single-phase transformers for a.c. welding, typically operating at 50 Hz or 60 Hz; single-phase transformers with connected rectifie
31、r for d.c. welding, typically operating at 50 Hz or 60 Hz; single-phase inverter transformers with connected rectifier for d.c. welding, typically operating at 400 Hz to 2 kHz; three-phase transformers with connected rectifier for d.c. welding, typically operating at 50 Hz or 60 Hz.For the purposes
32、of this International Standard, the term transformer can refer to the transformer alone or with connected rectifier (transformer-rectifier unit).This International Standard applies to transformers built to protection class I or II according to IEC 61140.NOTE The requirements of this International St
33、andard can be supplemented by other resistance welding transformer standards, e.g. ISO 22829 and ISO 10656.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition
34、 cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 669, Resistance welding Resistance welding equipment Mechanical and electrical requirementsIEC 60085, Electrical insulation Thermal evaluation and designationIEC 60529, Degree
35、s of protection provided by enclosures (IP code)IEC 61140, Protection against electric shock Common aspects for installation and equipmentISO 17657-3, Resistance welding Welding current measurement for resistance welding Part 3: Current sensing coilISO 17657-4, Resistance welding Welding current mea
36、surement for resistance welding Part 4: Calibration systemISO 17677-1, Resistance welding Vocabulary Part 1: Spot, projection and seam welding3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 17677-1 and ISO 669, and the following apply.INTERNATIONAL ST
37、ANDARD ISO 5826:2014(E) ISO 2014 All rights reserved 1BS EN ISO 5826:2014ISO 5826:2014(E)3.1transformer-rectifier unittransformer with connected rectifiertransformer incorporating a full-wave rectifier in its output circuit3.2input voltageU1RMS value of the voltage applied to the primary terminals o
38、f the transformer3.3rated supply voltageU1NRMS value of the supply voltage (applied to the input terminals) for which the transformer is constructedNote 1 to entry: This voltage can be different from the mains voltage.3.4d.c. no load voltageU2dfor transformers, RMS value of the voltage at the output
39、 when a load resistance is connected across the output terminals3.5input currentI1RMS value of the current at the input terminals of the transformer3.6output currentI2RMS value of the current at the output terminals of the transformer3.7output current at a given duty factorI2XRMS value of the curren
40、t at the output terminals of the transformer at a duty factor, X3.8no-load input currentI10RMS value of the current at the input terminals of the transformer with open circuit output terminals3.9permanent input currentI1p, ILpmaximum rated value of the current at the input terminals corresponding to
41、 the permanent output currentNote 1 to entry: The relationship between input and output currents depends on the type of transformer.Note 2 to entry: I1pis used for single-phase transformers; ILpis used for three-phase transformers.2 ISO 2014 All rights reservedBS EN ISO 5826:2014ISO 5826:2014(E)3.10
42、permanent output currentI2phighest output current on all settings of the regulator, for continuous operation (100 % duty factor)SOURCE: ISO 669Note 1 to entry: The permanent output current is a standardized parameter that is used for comparison and characterization between different transformers. Th
43、e value of the permanent output current is dependent on the test conditions as described in this standard.3.11output current under load conditionI2Rinstantaneous RMS value of the output current delivered by the transformer with a load resistance, R3.12rated permanent apparent input powerS1prated per
44、manent apparent power calculated by U1N I1pNote 1 to entry: Welding equipment permanent power, Sp, determined in accordance with ISO 669, may be different from its welding transformer rated permanent apparent input power, S1p.4 Symbols and abbreviated termsThe symbols used in this International Stan
45、dard are listed in Table 1.Table 1 SymbolsSymbol Description Used in sectionI1input current 3.5, 9.3I10no-load input current 3.8, Clause 11I1prated permanent input current (single-phase transformers) 3.9, 9.1, Clause 12ILprated permanent input current (three-phase transformers) 3.9, 9.1I2output curr
46、ent 3.6, 9.3, Annex CI2ppermanent output current at 100 % duty factor 3.10, 9.1, 9.3, 16.2, Annex CI2Routput current on load condition 3.11, Clause 13I2Xoutput current at a given duty factor 3.7, Annex Cm mass 16.2SXinput power at a given duty factor Annex CS1prated permanent apparent input power 3.
47、12, 9.1, 16.2, Annex CQ rated cooling liquid flow Clause 14, 16.2R1initial resistance of a winding 9.3.5, 9.4.3R2resistance of a winding at end of heating test 9.4.3T Time Annex Ct1on-load time Annex CT cycle time Annex CU1input voltage 3.2, Clause 13Uccrated short-circuit voltage Clause 12, Annex C
48、U1ccinput short-circuit voltage Clause 12 ISO 2014 All rights reserved 3BS EN ISO 5826:2014ISO 5826:2014(E)Symbol Description Used in sectionU1Nrated supply voltage 3.3, 9.1, 9.3, 10.2, 10.3, Clauses 11, 13, 16.2, Annex CU20a.c. no-load voltage 10.1, 10.2, 16.2U2dd.c. no-load voltage 3.4, 10.1, 10.3
49、, 16.2X duty factor 9.3, Annex CXmduty factor of magnetic circuit Annex CZ2total impedance referred to output Clauses 12 and 17ppressure drop of cooling liquid circuit Clause 14, 16.21, 2temperature differences Annex C temperature Annex Cacooling medium temperature 9.4.3, Annex B, Annex Cmequilibrium temperature Annex Cntemperature when transformer starts to cool Annex C0, 1, 2temperatures for calculation of thermal time constant or winding temperatures during heating test9.3.5, 9.4.3, Annex C thermal tim
