1、BRITISH STANDARDBS EN ISO 22829:2008Resistance welding Transformer-rectifier for welding guns with integrated transformers Transformer-rectifier units operating at 1 000 Hz frequencyICS 25.160.30; 29.180g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3
2、g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 22829:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2007 BSI 2008ISBN 978 0 580 60666 3National forewordThis Briti
3、sh Standard is the UK implementation of EN ISO 22829:2008. It is identical with ISO 22829:2007. It supersedes BS ISO 22829:2007 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee WEE/29, Resistance welding.A list of organizations represented on this comm
4、ittee 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.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/corrigenda issued s
5、ince publicationDate Comments30 June 2008 This corrigendum renumbers BS ISO 22829:2007 as BS EN ISO 22829:2008EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 22829March 2008ICS 25.160.30; 29.180English VersionResistance welding - Transformer-rectifier for welding guns withintegrated transforme
6、rs - Transformer-rectifier units operating at1000 Hz frequency (ISO 22829:2007)Soudage par rsistance - Transformateurs-redresseurspour pinces de soudage transformateur incorpor -Transformateurs-redresseurs aliments sous unefrquence de 1000 Hz (ISO 22829:2007)Widerstandsschweien - Transformatoren-Gle
7、ichrichter frSchweizangen mit integrierten Transformatoren -Transformator-/Gleichrichtereinheiten mit einerArbeitsfrequenz von 1 000 Hz (ISO 22829:2007)This European Standard was approved by CEN on 7 March 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate
8、 the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists
9、in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies
10、of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN
11、COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 22829:2008: EForeword The text o
12、f ISO 22829:2007 has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 22829:2008 by Technical Committee CEN/TC 121 “Welding” the secretariat of which is held by DIN. This Europe
13、an Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2008, and conflicting national standards shall be withdrawn at the latest by September 2008. Attention is drawn to the possibility that some of the e
14、lements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this
15、 European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the U
16、nited Kingdom. Endorsement notice The text of ISO 22829:2007 has been approved by CEN as a EN ISO 22829:2008 without any modification. BS EN ISO 22829:2008iiiContents Page 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Power supply to the transformer-rectifier unit 3 5 Transform
17、er types 3 6 Dimensions 4 7 Construction and additional equipment. 5 8 Marking 6 9 Shipping. 6 10 Designation . 6 11 Tests. 7 Annex A (informative) Relationship between output current and duty factor . 13 Annex B (normative) Input voltage timing characteristics 14 Annex C (normative) Dimensions of t
18、ransformers. 15 Annex D (normative) Rating plate 24 Bibliography . 26 BS EN ISO 22829:2008blank1Resistance welding Transformer-rectifier for welding guns with integrated transformers Transformer-rectifier units operating at 1 000 Hz frequency 1 Scope This International Standard is applicable to tran
19、sformer-rectifier units as used in electric resistance welding machines operating from a power supply with a frequency of 1 000 Hz, and of a rated value of the input voltage equal to or higher than 500 V. These transformer-rectifier units are primarily used in welding guns with an integrated transfo
20、rmer. For these transformer units, this International Standard supplements the requirements given in ISO 5826 and ISO 10656, which remain applicable except where amended by this International Standard. 2 Normative references The following referenced documents are indispensable for the application of
21、 this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 5826:1999, Resistance welding equipment Transformers General specifications applicable to all transformers ISO 17657-3,
22、Resistance welding Welding current measurement for resistance welding Part 3: Current sensing coil ISO 17657-4, Resistance welding Welding current measurement for resistance welding Part 4: Calibration system 3 Terms and definitions For the purposes of this document, the following terms and definiti
23、ons apply. 3.1 transformer-rectifier unit transformer incorporating a full-wave rectifier in its secondary circuit 3.2 input voltage U1Root-Mean-Square (RMS) value of the voltage applied to the primary terminals of the transformer-rectifier unit 3.3 rated supply voltage U1NRMS value of the supply vo
24、ltage (applied to the primary terminals) for which the transformer-rectifier unit is constructed BS EN ISO 22829:20082 3.4 rectified voltage U2dRMS value of the voltage at the output of the transformer-rectifier unit when a load resistance is connected across the output terminals 3.5 input current I
25、1RMS value of the current at the input terminals of the transformer-rectifier unit 3.6 open circuit input current I1ORMS value of the current at the input terminals of the transformer-rectifier unit with the output terminals open circuit 3.7 permanent input current I1Pmaximum RMS value of the curren
26、t at the input terminals of the transformer-rectifier unit with 100 % duty factor (X = 100 %), without exceeding the specified temperature limits NOTE For calculation related to this International Standard, I1P= I2P/ (N1/N2), where (N1/N2) is the transformer turns ratio. 3.8 output d.c. I2dRMS value
27、 of the direct current at the output terminals of the transformer-rectifier unit 3.9 permanent output current I2Pmaximum RMS value of the output current delivered by the transformer-rectifier unit at 100 % duty factor (X = 100 %), without exceeding the specified temperature limits 3.10 output curren
28、t on load condition I2RRMS value of the output current delivered by the transformer-rectifier unit with a load resistance R 3.11 apparent input power S1power measured at the input terminals of the transformer-rectifier unit, or calculated by U1 I13.12 rated permanent input apparent power S1Prated pe
29、rmanent apparent power calculated by U1N I1PBS EN ISO 22829:200833.13 conduction interval tsttime span within one half-wave of a period of the alternating current of the inverter, in which a voltage has a measured value that is greater than or equal to ,2where expresses the amplitude of voltage meas
30、ured at the output of inverter NOTE See Annex B. 3.14 non-conduction interval tpttime span within one half-wave of a period of the alternating current of the inverter, in which the voltage has a measured value that is less than 2NOTE See Annex B. 3.15 on time tstime during which the current is appli
31、ed 3.16 off time tptime during which the current is not applied 4 Power supply to the transformer-rectifier unit The rated voltage supply shall be delivered by an inverter. This inverter shall deliver the rated voltage at a frequency of 1 000 Hz in a waveform to suit the transformer-rectifier unit c
32、haracteristics. 5 Transformer types The minimum principal electrical characteristics of a transformer-rectifier unit shall conform to Table 1. BS EN ISO 22829:20084 Table 1 Electrical characteristics Type Nominal value of the rectified voltage U2dV Minimum value of S1PkVA Minimum permanent output cu
33、rrent I2PkA Minimum output current on load condition I2RakA H1 6,3 36,0 5,0 11 H2 8,4 45,0 5,0 14 J1 6,3 45,0 6,3 18 J2 10,0 68,0 6,3 28 J3 9,3 63,0 6,3 25 J412,5 83,0 6,3 32 N1 10,4 64,0 5,7 20 P1 12,2 75,0 5,7 27 S1 8,2 71,0 6,3 25 NOTE Indicated values are RMS values and are given for a cooling l
34、iquid flow rate of 6 l/min for types J1, J2, H, N and P, and of 8 l/min for types J3, J4 and S, with a maximum temperature of the cooling liquid at transformer input of 30 C. aR = 200 5 % = load resistance. The manufacturer of transformer-rectifier units shall provide a set of curves showing the max
35、imum output current relative to duty factor and welding time at the rated supply voltage. An example of a set of curves is given in Annex A. 6 Dimensions The dimensions of the transformer-rectifier unit shall be as given in Table 2 and as illustrated in Annex C. NOTE According to ISO 10656, there ar
36、e basically two transformer types: H (106 mm 150 mm variable length), and J (125 mm 160 mm variable length). BS EN ISO 22829:20085Table 2 Dimensions Dimensions in millimetres Type Maximum length L1Length between mounting holes L2Overall width Overall height Output terminals dimensions H1 270 170 106
37、 150 32 32 H2 270 170 106 150 32 32 J1 300 190 125 160 32 32 J2 300 190 125 160 32 32 J3 300 190 125 160 40 50 J4360 250 125 160 40 50 N1 400 115 130 190 45 50 P1 400 128 125 200 50 50 S1 370 279 127 171 51 67 7 Construction and additional equipment 7.1 Grounding The centre point of the secondary co
38、il shall be earthed by a removable link. 7.2 Thermal protection The transformer and the rectifier shall be equipped with thermoswitches that each have a normally closed contact. The insulation shall be suitable for the test conditions prescribed in this International Standard. The position of the wi
39、ring of these thermoswitches shall be in accordance with Figures C.1 to C.6. The wiring of primary thermoswitches shall be sky blue, the wiring of secondary thermoswitches shall be black and the wiring of rectifier thermoswitches shall be yellow. 7.3 Protection of the rectifier The rectifier should
40、be protected against the accumulation of welding spatter and other contamination. 7.4 Output current sensing coil If the transformer-rectifier unit is equipped with an output current sensing coil, it shall comply with the conditions below. The degree of protection of an externally mounted coil shall
41、 be lP 55. The output shall be 150 mV/kA 1,5 % at a load resistor of 1 000 1 % under full sine wave with a 50 Hz frequency, up to 80 C. The tolerance after mounting in the transformer-rectifier unit shall be 3 %. The detector shall be a Rogowski type coil. The internal resistance of the detector sha
42、ll be 10 to 50 . White and brown colour coding shall be used for the wiring. BS EN ISO 22829:20086 7.5 Output voltage sensing wires If the transformer-rectifier unit is equipped with output voltage sensing wires, red and dark blue colour coding shall be used for the wiring. The red wire shall be con
43、nected to the “+” output terminal, and the dark blue wire to the “” output terminal. The wiring shall be protected from short-circuit currents by suitable means, e.g. by fuses, resistors or positive temperature coefficient thermistors. If a resistor or a positive temperature coefficient thermistor i
44、s used, a value of 100 is recommended. 7.6 Mechanical strength After being tested in accordance with 11.3.6 and 11.3.8, the transformer shall exhibit no visible mechanical damage. 8 Marking 8.1 Primary The earth and two primary voltage connections shall be clearly identified by means of “U”, “V” and
45、 the symbol (see IEC 60417). The connection to the mid-point of the transformer shall be marked with “MP”. 8.2 Output terminals The polarity of the output terminals shall be marked on the transformer and on the data sheet with the symbols “+” and “”, in accordance with Figures C.1 to C.6. 8.3 Rating
46、 plate The rating plate shall conform to Annex D. 9 Shipping The cooling system shall be drained and the ends plugged. The terminals shall be protected to avoid damage during shipment and storage. 10 Designation The designation of a transformer-rectifier unit, principally used for welding guns with
47、integrated transformer (robot guns) and complying with the requirements of this International Standard, shall provide the following information, in the order given: complete designation (i.e. “Transformer-rectifier unit”); reference to this International Standard; type of transformer-rectifier unit
48、(e.g. “H1”); rectified voltage U2d; minimum permanent output current I2P(see Table 1); BS EN ISO 22829:20087 rated supply voltage U1Nand frequency; indication of thermal protection T; indication of current sensing coil M; indication of voltage detector U. EXAMPLE Transformer-rectifier unit ISO 22829
49、 H1 6,3 5,4 500/1000 TMU. 11 Tests 11.1 Type tests Type testing shall be in compliance with ISO 5826, except where amended by this International Standard. The following type tests shall be carried out, in the following order: general visual examination (preliminary); insulation test (preliminary test); rectified voltage (U2d), open-circuit input current (I1O); minimum output current under load condition; temperature-rise test; dynamic behaviour; ca
