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1、BRITISH STANDARD BS EN 60851-4:1998 IEC 60851-4: 1996 Incorporating Amendment No. 1 Winding wires Test methods Part 4: Chemical properties The European Standard EN 60851-4:1998, with the incorporation of amendments A1:1997 and A2:2005, has the status of a British Standard ICS 29.060.10 Licensed Copy
2、: sheffieldun sheffieldun, na, Fri Nov 10 07:13:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 60851-4:1998 This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into effect on 15
3、October 1998 BSI 14 March 2006 ISBN 0 580 30412 4 National foreword This British Standard is the English language version of EN 60851-4 + A1:1997 + A2:2005. It was derived by CENELEC from IEC 60851-4:1996 and incorporates Amendment 1:1997 and Amendment 2:2005. It supersedes BS EN 60851-4:1995 which
4、is withdrawn. The start and finish of text introduced or altered by CENELEC amendment is indicated in the text by tags ?. Tags indicating changes to CENELEC text carry the number of the CENELEC amendment. For example, text altered by CENELEC amendment A1 is indicated in the text by ?. The CENELEC co
5、mmon modifications have been implemented at the appropriate places in the text and are indicated by sidelines in the margin. The UK participation in its preparation was entrusted to Technical Committee GEL/55, Winding wires, which has the responsibility to: aid enquirers to understand the text; pres
6、ent to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be ob
7、tained 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” facilit
8、y 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.
9、Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 13 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No.DateComments 1571014 March 20
10、06See national foreword Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 07:13:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60851-4 December 1996 + A1 + A2 October 1997 March 2005 ICS 29.060.10Supersedes EN 60851-4:1994 Descriptors: Electri
11、cal wire, winding wire, insulated wire, chemical property English version Winding wires Test methods Part 4: Chemical properties (includes amendments A1:1997 + A2:2005) (IEC 851-4:1996 + A1:1997 + A2:2005) Fils de bobinage Mthodes dessai Partie 4: Proprits chimiques (inclut les amendements A1:1997 +
12、 A2:2005) (CEI 851-4:1996 + A1:1997 + A2:2005) Wickeldrhte Prfverfahren Teil 4: Chemische Eigenschaften (enthlt nderungen A1:1997 + A2:2005) (IEC 851-4:1996 + A1:1997 + A2:2005) This European Standard was approved by CENELEC on 1996-10-01; amendment A1 was approved by CEN on 1997-10-01; amendment A2
13、 was approved by CENELEC on 2005-03-01. CENELEC 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
14、such national standards may be obtained on application to the Central Secretariat or to any CENELEC 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 CENELEC member into its ow
15、n language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lit
16、huania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Centra
17、l Secretariat: rue de Stassart 35, B-1050 Brussels 1996 Copyright reserved to CENELEC members Ref. No. EN 60851-4:1996 + A1:1997 + A2:2005 E Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 07:13:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60851-4:1996 BSI 14 March 2006 2 Foreword The tex
18、t of document 55/473A/FDIS, future edition 2 of IEC 851-4, prepared by IEC TC 55, Winding wires, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60851-4 on 1996-10-01. This European Standard supersedes EN 60851-4:1994. The following dates were fixed: Annexes designat
19、ed “normative” are part of the body of the standard. In this standard, Annex ZA is normative. Annex ZA has been added by CENELEC. Foreword to EN 60851-4:1996/A1:1997 The text of document 55/597/FDIS, future amendment 1 to IEC 60851-4:1996, prepared by IEC TC 55, Winding wires, was submitted to the I
20、EC-CENELEC parallel vote and was approved by CENELEC as amendment A1 to EN 60851-4:1996 on 1997-10-01. The following dates were fixed: Foreword to amendment 2 The text of document 55/924/FDIS, future amendment 2 to IEC 60851-4:2005, prepared by IEC TC 55, Winding wires, was submitted to the IEC-CENE
21、LEC parallel vote and was approved by CENELEC as amendment A2 to EN 60851-4:1996 on 2005-03-01. The following dates were fixed: Endorsement notice The text of amendment 2:2005 to the International Standard IEC 60851-4:1996 was approved by CENELEC as an amendment to the European Standard without any
22、modification. Contents Page Foreword2 Introduction3 1Scope3 2Normative references3 3Test 12: Resistance to solvents (applicable to enamelled round wire with a nominal conductor diameter over 0,250 mm and to enamelled rectangular wire)3 4Text 16: Resistance to refrigerants (applicable to enamelled ro
23、und wire)4 5Test 17: Solderability (applicable to enamelled round wire and bunched wire)6 6Test 20: Resistance to hydrolysis and to transformer oil (applicable to enamelled wire)7 Annex ZA (normative) Normative references to international publications with their corresponding European publications13
24、 Figure 1 Pencil and specimen for solvent test9 Figure 2 Refrigerant extractable test siphon cup10 Figure 3 Condenser coils11 Figure 4 Example of carrier for solderability test12 Table 1 Volume of components8 latest date by which the EN has to be implemented at national level by publication of an id
25、entical national standard or by endorsement(dop) 1997-07-01 latest date by which the national standards conflicting with the EN have to be withdrawn(dow) 1997-07-01 latest date by which the amendment has to be implemented at national level by publication of an identical national standard or by endor
26、sement(dop) 1998-07-01 latest date by which the national standards conflicting with the amendment have to be withdrawn(dow) 1998-07-01 latest date by which the amendment has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 2005-12-01 latest
27、date by which the national standards conflicting with the amendment have to be withdrawn(dow) 2008-03-01 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 07:13:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60851-4:1996 BSI 14 March 20063 Introduction This part of IEC 60851 forms an element
28、of a series of standards which deals with insulated wires used for windings in electrical equipment. The series has three groups describing: a) methods of test (IEC 60851); b) specifications (IEC 60317); c) packaging (IEC 60264). 1 Scope This part of IEC 60851 specifies the following tests: Test 12:
29、 Resistance to solvents; Test 16: Resistance to refrigerants; Test 17: Solderability; Test 20: Resistance to transformer oil. For definitions, general notes on methods of test and the complete series of methods of test for winding wires see IEC 60851-1. 2 Normative references The following normative
30、 documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 60851. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this part of IEC 60851 are encourag
31、ed to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of the IEC and ISO maintain registers of currently valid International Standards. IEC 60296:1982, Specification for unused mineral insulating oils for transformers and switchgea
32、r. IEC 60554-1:1977, Specification for cellulosic papers for electrical purposes Part 1: Definitions and general requirements. IEC 60851-1:1996, Winding wires Test methods Part 1: General. IEC 60851-3:1996, Winding wires Test methods Part 3: Mechanical properties. IEC 60851-5:1996, Winding wires Tes
33、t methods Part 5: Electrical properties. ?3 Test 12: Resistance to solvents (applicable to enamelled round wire with a nominal conductor diameter over 0,250 mm and applicable to enamelled rectangular wire) The test is not suitable for round wires with a nominal conductor diameter up to and including
34、 0,250 mm. Resistance to solvents is expressed by the pencil hardness of the wire after solvent treatment.? 3.1 Equipment The following solvents shall be used: standard solvent as specified below, or solvent as agreed between purchaser and supplier. The standard solvent shall be a mixture of: 60 % b
35、y volume white spirit with maximum aromatic content of 18 %; 30 % by volume xylene; 10 % by volume butanol. The pencil to be used shall be a lead pencil of a hardness as specified in the relevant standard. Before each test, the point of the pencil shall be sharpened with a smooth-cut file to form an
36、 angle of 60 symmetrical about the axis of the lead according to Figure 1. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 07:13:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60851-4:1996 4 BSI 14 March 2006 3.2 Procedure ?A straight piece of wire, approximately 150 mm in length, shall be
37、preconditioned for (10 1) min at (130 3) C in an oven with forced air circulation. A substantial length of the wire shall then be immersed in standard solvent contained in a glass cylinder and shall be maintained therein at a temperature of (60 3) C for a period of (30 3) min. The wire shall then be
38、 removed from the solvent. The hardness of the wire surface shall then be determined in the following manner within a period of 30 s after removal from the solvent. The specimen to be tested shall be laid on a smooth hard surface according to Figure 1. In the case of rectangular wires, the test shal
39、l be carried out on the largest side of the wire. The pencil shall be placed on the surface of the wire at an angle of approximately (60 5) and the sharpened edge shall be pressed slowly along the surface of the wire with a force of approximately (5 0,5) N.? Three tests shall be made. It shall be re
40、ported, if the coating is removed with exposure of the bare conductor. NOTE 1 This method can also be used for testing resistance to other fluids, for example oil. NOTE 2 Where it is desired to determine the hardness of the insulation, the hardness of the lead pencil which just fails to remove the c
41、oating from the surface of the conductor shall be taken as the hardness of the wire surface, expressed by the pencil hardness. The pencil hardness series is as follows: 4 Test 16: Resistance to refrigerants (applicable to enamelled round wire) ?Resistance to refrigerant is expressed by the quantity
42、of matter extracted from the coating of the wire and by the breakdown voltage after exposure to a refrigerant. NOTE 1 The data in this test method apply to monochlorodifluoromethane (refrigerant R 22). Other refrigerants may be used, in which case the critical data for such fluid should be observed
43、and operation of the pressure vessel should comply with the revised test conditions. . NOTE 2 Refrigerants like monochlorodifluoromethane and rinsing fluids like trichlorotrifluorethane (refrigerant R 113) are ozone depleting chemicals (ODC). Refrigerant and rinsing fluid should be agreed upon betwe
44、en customer and supplier.? 4.1 Extraction 4.1.1 Principle A siphon cup containing the wire sample is placed in the pressure vessel. The extractable matter is determined after exposure of the wire sample to the refrigerant under pressure and at elevated temperature. 4.1.2 Equipment The following equi
45、pment shall be used: siphon cup according to Figure 2, of 450 ml volume up to the siphoning level; pressure vessel of 2 000 ml volume with an internal diameter of approximately 100 mm and a pressure capacity of 200 bar (20 MPa), preferably of unwelded construction and provided with a controlled heat
46、ing system; top closure of the vessel containing a condenser coil according to Figure 3; oven with forced air circulation. 4.1.3 Specimen Eight wire samples each containing (0,6 0,1) g of insulation shall be wound into coils of 70 turns. The specimens shall be degreased and conditioned in an oven wi
47、th forced air circulation at (150 3) C for 15 min. After 30 min cooling, the eight specimens shall be weighed together to the nearest 0,0001 g, resulting in the total initial mass M1. 6B5B4B3B2BBHBH2H3H4H5H6H7H8H9H 45678910111213141516171819 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 07:
48、13:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60851-4:1996 BSI 14 March 20065 4.1.4 Procedure ?The eight specimens shall be placed in the siphon cup, which is suspended (25 5) mm below the condenser coil on the pressure vessel cover. The pressure vessel shall be assembled and charged with (700
49、 25) g of distilled refrigerant free from lubricant. The condenser water supply and drain line shall be connected and the pressure vessel shall be heated by means of a controlled heating system with the temperature set to (75 5) C or a lower temperature if required to comply with the conditions of the following paragraph relating to critical pressure. The water flowing through the condenser shall be adjusted to maintain a reflu