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1、BRITISH STANDARD BS EN ISO 5826:2003 Resistance welding equipment Transformers General specifications applicable to all transformers The European Standard EN ISO 5826:2003 has the status of a British Standard ICS 25.160.30; 29.180 ? Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:38:55 GMT
2、+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 5826:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 27 May 2003 BSI 27 May 2003 ISBN 0 580 41914 2 National foreword This British Standard is the official English language version of EN
3、ISO 5826:2003. It is identical with ISO 5826:1999. It supersedes BS 7125:1989 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee WEE/29, Resistance welding, which has the responsibility to: A list of organizations represented on this committee can be obt
4、ained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility
5、 of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. a
6、id enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages T
7、his document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii and iii, a blank page, pages 1 to 22, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was la
8、st issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:38:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 5826 May 2003 ICS 25.160.30; 29.180 English version Resistance weld
9、ing equipment - Transformers - General specifications applicable to all transformers (ISO 5826:1999) Matriel de soudage par rsistance - Transformateurs - Spcifications gnrales applicables tous les transformateurs (ISO 5826:1999) Widerstandsschweieinrichtungen - Transformatoren - Allgemeine Anforderu
10、ngen (ISO 5826:1999) This European Standard was approved by CEN on 3 April 2003. 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-date lists and b
11、ibliographical references concerning such national standards may be obtained on application to the 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 translation under the responsibility
12、of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
13、 Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2003 CENAll rights of exploitation in any form and by a
14、ny means reserved worldwide for CEN national Members. Ref. No. EN ISO 5826:2003 E Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:38:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Foreword The text of ISO 5826:1999 has been prepared by Technical Committee ISO/TC 44 “Welding and allied proce
15、sses“ of the International Organization for Standardization (ISO) and has been taken over as EN ISO 5826:2003 by Technical Committee CEN/TC 121 “Welding“, the secretariat of which is held by DS. This European Standard shall be given the status of a national standard, either by publication of an iden
16、tical text or by endorsement, at the latest by November 2003, and conflicting national standards shall be withdrawn at the latest by November 2003. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European
17、Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 5826:1999 has been approved by CE
18、N as EN ISO 5826:2003 without any modifications. EN ISO 5826:2003 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:38:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI A INTERNATIONAL STANDARD ISO 5826 Second edition 1999-11-15 Resistance welding equipment Transformers General specifications ap
19、plicable to all transformers Matriel de soudage par rsistance Transformateurs Spcifications gnrales applicables tous les transformateurs EN ISO 5826:2003 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:38:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii Contents Page 1 Scope 1 2 Normative
20、references1 3 Terms and definitions .1 4 Symbols2 5 Physical environment and operating conditions3 6 Test conditions 3 7 Protection against electric shock5 8 Thermal requirements6 9 Rated no-load output voltage (U20) 9 10 Rated short-circuit voltage (Ucc).9 11 Cooling liquid circuit.9 12 Dynamic beh
21、aviour10 13 Rating plate 10 14 Instruction manual.12 Annex A (informative) Example of a rating plate13 Annex B (normative) Corrections for higher altitudes and cooling medium temperatures14 Annex C (normative) Notes on physical concepts and comments on some definitions.15 Annex D (normative) Type co
22、de 21 Bibliography22 EN ISO 5826:2003 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:38:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work
23、of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-government
24、al, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft I
25、nternational Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 5826 was prepared by Technical Committee ISO/TC 44, W
26、elding and allied processes, Subcommittee SC 6, Resistance welding. This second edition cancels and replaces the first edition (ISO 5826:1983), which has been technically revised. Annexes B, C and D form a normative part of this International Standard. Annex A is for information only. EN ISO 5826:20
27、03 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:38:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI blank EN ISO 5826:2003 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:38:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI DRADNATS LANOITANRETNI OSI)E(9991:6285 OSI 1 Resistance weld
28、ing equipment Transformers General specifications applicable to all transformers 1 Scope This International Standard give specifications applicable to transformers for resistance welding equipment without connected rectifier. 2 Normative references The following normative documents contain provision
29、s which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate th
30、e possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 669, Resistance welding e
31、quipment Mechanical and electrical requirements. IEC 60051-2, Direct acting indicating analogue electrical measuring instruments and their accessories Part 2: Special requirements for ammmeters and voltmeters. IEC 60085, Thermal evaluation and classification of electrical insulation. IEC 60204-1, El
32、ectrical equipment of industrial machines Part 1: General requirements. IEC 60529, Degrees of protection provided by enclosures (IP code). IEC 60536-2, Classification of electrical and electronic equipment with regard to protection against electric shock Part 2: Guidelines to requirements for protec
33、tion against electric shock. IEC 60664-1, Insulation coordination for equipment within low-voltage systems Part 1: Principles, requirements and tests. IEC 60905, Loading guide for dry-type power transformers. 3 Terms and definitions For the purposes of this International Standard, the terms and defi
34、nitions given in ISO 669 apply. EN ISO 5826:2003 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:38:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 4 Symbols The symbols used in this International Standard are listed in Table 1. Table 1 List of symbols SymbolDescriptionReference I1prated p
35、ermanent input current10, 12 I1Xinput current at a given duty factorannex C I2output currentannex C I2ppermanent output current at 100 % duty factor13.2, annex C I2Xoutput current at a given duty factorannex C I2/50output current at 50 % duty factor13.2 mmass13.2 Ppowerannex C Pppermanent input powe
36、r (at 100 % duty factor)10, 11, 13.2, annex C PXinput power at a given duty factorannex C P50input power at 50 % duty factor13.2 Qrequired total rate of cooling liquid flow11, 13.2 R1initial resistance of a winding8.2.1, 8.3.2 R2resistance of a winding at the end of the heating test8.3.2 ttimeannex
37、C t1on-load timeannex C Tcycle timeannex C Uccrated short-circuit voltage10 U1ccinput short-circuit voltage10 U1Nrated supply voltage9, 10, 13.2 U20rated output no-load voltage9, 13.2 Xduty factorannex C Xmduty factor of the magnetic circuitannex C Z2total impedance refered to the output10 Dppressur
38、e drop of the cooling liquid circuit11, 13.2 Du1, 2temperature differencesannex C utemperatureannex C uacooling medium temperatureannex C umequilibrium temperatureannex C untemperature when the transformer starts to coolannex C u0, 1, 2temperatures for calculation of the thermal time constant or the
39、 winding temperatures during the heating test 8.2.1, 8.3.2, annex C tthermal time constantannex C t2thermal time constant at given on-load timeannex C t2pthermal time constant at permanent output currentannex C EN ISO 5826:2003 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:38:55 GMT+00:0
40、0 2006, Uncontrolled Copy, (c) BSI 3 5 Physical environment and operating conditions 5.1 General Transformers shall be suitable for use in the physical environment and operating conditions as specified below. When the physical environment and/or operating conditions are outside those specified below
41、, an agreement may be needed between the supplier and the user, (see e.g. annex B of IEC 60204-1:1997). 5.2 Ambient air temperature Transformers shall be capable of operating correctly in an ambient air temperature between 1 5 C and 1 40 C. In case of other maximum temperatures of the cooling medium
42、, see annex B. 5.3 Humidity Transformers shall be capable of operating correctly within a relative humidity range of 30 % to 95 %. Harmful effects of occasional condensation shall be avoided by proper design of the equipment or, where necessary, by proper additional measures (e.g. air conditioners,
43、drain holes). 5.4 Altitude Transformers shall be capable of operating correctly at altitudes up to 1 000 m above mean sea level. In case of other altitudes, see annex B. 5.5 Transportation and storage Transformers shall be designed to withstand, or suitable precautions shall be taken to protect agai
44、nst, transportation and storage temperatures between 2 25 C and 1 55 C and for short periods not exceeding 24 h up to 1 70 C. Suitable means shall be provided to prevent damage from humidity, vibration and shock. 5.6 Provisions for handling Transformers shall be provided with suitable means for hand
45、ling by cranes or similar equipment. 5.7 Temperature of the cooling liquid The temperature of the cooling liquid may be up to 1 30 C at the inlet of the transformer. NOTE Condensation caused by high cooling liquid flow or low cooling liquid temperature in relation to the relative humidity should be
46、prevented. 6 Test conditions 6.1 General The tests shall be carried out on new, dry and completely assembled transformers at an ambient air temperature between 1 10 C and 1 40 C. The ventilation shall be identical with that prevailing under normal service conditions. When placing the measuring devic
47、es, the only access permitted shall be through openings with cover plates, inspection doors or easily removable panels provided by the manufacturer. The measuring devices used shall not interfere with the normal ventilation of the transformer or cause transfer of heat to or from it. Liquid cooled tr
48、ansformers shall be tested with liquid conditions as specified by the manufacturer. EN ISO 5826:2003 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:38:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 The accuracy of measuring instruments shall be: a) electrical measuring instruments: Class
49、 0,5 (0,5 % full scale, see IEC 60051-2); b) thermometer: 2 K. Unless otherwise specified, the tests required in this International Standard are type tests. The sequence for some of the type tests is specified in 6.2. The routine tests are specified in 6.3. Compliance with other standards referred to shall be checked according to these standards. 6.2 Type tests All type tests shall be carried out on the same transformer except otherwise