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1、BRITISH STANDARD BS EN ISO 17657-5:2007 Incorporating amendment no. 1 (renumbers BS ISO 17657-5:2005 as BS EN ISO 17657-5:2007) Resistance welding Welding current measurement for resistance welding Part 5: Verification of welding current measuring system The European Standard EN ISO 17657-5:2007 has
2、 the status of a British Standard ICS 25.160.10 ? Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:15:53 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN ISO 17657-5:2007 This British Standard was published under the authority of the Standards Policy and Strat
3、egy Committee on 19 January 2006 BSI 2007 ISBN 978 0 580 59706 0 National foreword This British Standard is the UK implementation of EN ISO 17657-5:2007. It is identical with ISO 17657-5:2005. The UK participation in its preparation was entrusted to Technical Committee WEE/29, Resistance welding. A
4、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. Compliance with a British Standard cannot confer immunity from
5、legal obligations. Amendments issued since publication Amd. No. DateComments 1729831 August 2007Renumbers BS ISO 17657-5:2005 as BS EN ISO 17657-5:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:15:53 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN S
6、TANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17657-5 June 2007 ICS 25.160.10 English Version Resistance welding - Welding current measurement for resistance welding - Part 5: Verification of welding current measuring system (ISO 17657-5:2005) Soudage par rsistance - Mesurage des courants en soudag
7、e par rsistance - Partie 5: Vrification des systmes de mesurage du courant de soudage (ISO 17657-5:2005) Widerstandsschweien - Schweistrommessung fr das Widerstandsschweien - Teil 5: Verifizierung des Schweistrommesssystems (ISO 17657-5:2005) This European Standard was approved by CEN on 19 May 2007
8、. 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 bibliographical references concerning such national standards may be obtained on
9、 application to the CEN 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 of a CEN member into its own language and notified to the CEN Management Ce
10、ntre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Pol
11、and, Portugal, Romania, Slovakia, Slovenia, 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 2007 CENAll rights of exploitation in any form and by
12、 any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17657-5:2007: E Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:15:53 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Foreword The text of ISO 17657-5:2005 has been prepared by Technical Commi
13、ttee ISO/TC 44 “Welding and allied processes” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 17657-5:2007 by Technical Committee CEN/TC 121 “Welding“, the secretariat of which is held by DIN. This European Standard shall be given the status of a nationa
14、l standard, either by publication of an identical text or by endorsement, at the latest by December 2007, and conflicting national standards shall be withdrawn at the latest by December 2007. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following cou
15、ntries are bound to implement this 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, Sp
16、ain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 17657-5:2005 has been approved by CEN as a EN ISO 17657-5:2007 without any modification. EN ISO 17657-5:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:15:53 GMT+00:00 2007,
17、Uncontrolled Copy, (c) BSI Reference number ISO 17657-5:2005(E) INTERNATIONAL STANDARD ISO 17657-5 First edition 2005-09-15 Resistance welding Welding current measurement for resistance welding Part 5: Verification of welding current measuring system Soudage par rsistance Mesurage des courants en so
18、udage par rsistance Partie 5: Vrification des systmes de mesurage du courant de soudage EN ISO 17657-5:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:15:53 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ii Licensed Copy: London South Bank University, London
19、 South Bank University, Sat Sep 01 03:15:53 GMT+00:00 2007, Uncontrolled Copy, (c) BSI iii Contents Page Foreword iv Introduction v 1 Scope 1 2 Normative references1 3 Terms and definitions .1 4 Test set-up2 5 Physical environment and operating conditions .2 6 Verification requirements .2 6.1 Master
20、 welding current measuring system.2 6.2 Master (current sensing) coil3 6.3 Welding machine used for verification3 7 Test report3 8 Test procedure.4 Annex A (informative) Items to be recorded or filed as reference documentation for verification5 Annex B (informative) Test report for verification of a
21、 welding current measuring system in accordance with this part of ISO 17657.6 EN ISO 17657-5:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:15:53 GMT+00:00 2007, Uncontrolled Copy, (c) BSI iv Foreword ISO (the International Organization for Standardizat
22、ion) 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 committee has been established has the right to be r
23、epresented 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 electrotechnical standardization. International Standards
24、 are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Internat
25、ional Standard requires approval by at least 75 % of the member bodies casting a vote. Attention 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. ISO 17657-5 wa
26、s prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee SC 6, Resistance welding. ISO 17657 consists of the following parts, under the general title Resistance welding Welding current measurement for resistance welding: Part 1: Guidelines for measurement Part 2: Weldi
27、ng current meter with current sensing coil Part 3: Current sensing coil Part 4: Calibration system Part 5: Verification of welding current measuring system EN ISO 17657-5:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:15:53 GMT+00:00 2007, Uncontrolled
28、Copy, (c) BSI v Introduction Requests for official interpretations of any aspect of this part of ISO 17657 should be directed to the Secretariat of ISO/TC 44/SC 6 via your national standards body. A complete listing of these bodies can be found at http:/www.iso.org. EN ISO 17657-5:2007 Licensed Copy
29、: London South Bank University, London South Bank University, Sat Sep 01 03:15:53 GMT+00:00 2007, Uncontrolled Copy, (c) BSI blank Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:15:53 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 1 Resistance welding Welding cu
30、rrent measurement for resistance welding Part 5: Verification of welding current measuring system 1 Scope This part of ISO 17657 specifies a verification procedure for welding current meters and monitoring devices with current sensing coil, which are applied in measuring welding current in resistanc
31、e welding using alternating current of 50 Hz or 60 Hz, or with direct current. This verification procedure is applicable for a current range between 0,5 kA and 25 kA. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated reference
32、s, only the edition 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 requirements ISO 17657-2:2005, Resistance welding Welding current measuremen
33、t for resistance welding Part 2: Welding current meter with current sensing coil ISO 17657-4:2005, Resistance welding Welding current measurement for resistance welding Part 4: Calibration system 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 669 an
34、d the following apply. 3.1 test (current sensing) coil current sensor to be verified 3.2 master (current sensing) coil current sensor known as Rogowski-type coil, calibrated against a reference current sensor 3.3 test welding current meter welding current meter to be verified 3.4 master welding curr
35、ent meter welding current meter that has been calibrated against a reference welding current meter EN ISO 17657-5:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:15:53 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 2 4 Test set-up Test set-up for verificatio
36、n consists of a resistance welding machine, a master welding current meter with its coil, and a test welding current measuring system or monitoring device with coil to be tested. A typical test set-up is shown in Figure 1. The sensing coil positioning should be in accordance with positions B, F and
37、H in Figure 1 of ISO 17657-2:2005. Key 1 welding controller 2 master coil 3 test coil 4 master welding current meter 5 test welding current meter 6 resistance welding machine 7 electrode position 8 fixing 9 coil B Recommended position of the master coil Figure 1 A typical set-up for verification of
38、a welding current meter 5 Physical environment and operating conditions Unless otherwise specified, the verification system shall be capable of operating under the following conditions without any adverse effect on its accuracy: at an ambient air temperature between +5 C and +40 C; in relative humid
39、ity up to 95 %; at altitudes up to 1 000 m above mean sea level; where gas, fine dust, oil mist, spatters, etc. are included in the air such as those caused by ordinary arc or spot welding work. 6 Verification requirements 6.1 Master welding current measuring system The master welding current measur
40、ing system shall be calibrated by using a reference welding current measuring system at least once a year in accordance with the procedure stipulated in ISO 17657-4:2005, 8.2. The accuracy of the master welding current measuring system shall be higher than the accuracy of the measuring system to be
41、tested. EN ISO 17657-5:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:15:53 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 3 The master welding current measuring system shall be classified as shown in Table 1, and shall be selected depending on the required
42、 measuring accuracy. Table 1 Classification of master welding current measuring system by accuracy Classification Measuring accuracy Application Highly accurate class 1,0 % of full scale For checking of accurate class or ordinary class Accurate class 2,0 % of full scale For checking of ordinary clas
43、s Ordinary class 5,0 % of full scale Not to be used for checking The specification, name of certifying body and relevant date for the master welding current meter, and master current sensing coil shall be recorded on all documents, see in Annex A. 6.2 Master (current sensing) coil The sensor positio
44、n error of master current sensing coil should be within 0,5 %, or the sensor/coil position should be set at the same position in which it was calibrated. If the master coil requires a fixed position to guarantee the accuracy, the calibrated position shall be marked on the master coil. NOTE The maste
45、r coil should be set at the same position as the one at which it was calibrated. Position B as illustrated in Figure 1 is recommended as the setting position of master coil in order to keep the accuracy of master coil after multi-repeat setting and detaching. 6.3 Welding machine used for verificatio
46、n Resistance spot, projection and seam welding machines as defined in ISO 669 can be used as the power sources, and should be capable of delivering a current within the range of the test welding current measuring system. 7 Test report The following shall be recorded during verification of a welding
47、current measuring system including monitoring devices for measuring welding current: a) model and type of master welding current meter and current sensing coil, the full scale or the measuring range and the measuring accuracy; b) sensor position of master coil to guarantee the measuring accuracy; c)
48、 model and type of test welding current meter and the rated class; d) measuring range of the test meter to be tested; e) setting positions of meter and test coils (see Figure 1 of ISO 17657-2:2005); f) type and frequency of power source used for the test (alternating current 50 Hz or 60 Hz, direct c
49、urrent); g) time of current application; h) room temperature; also each measurement: i) read-out of the master welding current meter expressed as an r.m.s. value, in kiloamps (kA); EN ISO 17657-5:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:15:53 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 4 j) read-out of the test welding current meter expressed as an r.m.s. value, in kiloamps (kA); k) dev