1、BRITISH STANDARD BS EN 60512-19-3: 1998 IEC 60512-19-3: 1997 Electromechanical components for electronic equipment Basic testing procedures and measuring methods Part 19: Chemical resistance tests Section 3: Test 19c. Fluid resistance The European Standard EN 60512-19-3:1997 has the status of a Brit
2、ish Standard ICS 31.220.01BSEN60512-19-3:1998 This British Standard, having been prepared under the directionof the ElectrotechnicalSector Board,was published undertheauthorityof the StandardsBoardand comesintoeffect on 15 January 1998 BSI 04-1999 ISBN 0 580 28737 8 National foreword This British St
3、andard is the English language version of EN60512-19-3:1997. It is identical with IEC60512-19-3:1997. The UK participation in its preparation was entrusted by Technical Committee EPL/48, Electromechanical components for electronic equipment, to Subcommittee EPL/48/2, Connectors for electronic equipm
4、ent, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UKinterests informed; monitor related international and European developments and promulg
5、ate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC27-1 has been renumbered as IEC60027-1. For a period of time during the
6、change over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding
7、 European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue.
8、 A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises
9、 a front cover, an inside front cover, pages i and ii, theENtitle page, pages 2 to 4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendmen
10、ts issued since publication Amd. No. Date CommentsBSEN60512-19-3:1998 BSI 04-1999 i Contents Page National foreword Inside front cover Foreword 2 Text of EN 60512-19-3 3ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN60512-19-3 October1997 ICS31.220.01 English version Electromechanical c
11、omponents for electronic equipment Basic testing procedures and measuring methods Part 19: Chemical resistance tests Section 3: Test 19c Fluid resistance (IEC 60512-19-3:1997) Composants lectromcaniques pour quipements lectroniques Procdures dessaide base et mthodes de mesure Partie19: Essais de rsi
12、stance chimique Section 3: Essai 19c Rsistance aux fluides (CEI 60512-19-3:1997) Elektrisch-mechanische Bauelemente frelektronische Einrichtungen Me- und Prfverfahren Teil 19: Prfungen der Widerstandsfhigkeit gegen Chemikalien Hauptaschnitt 3: Prfung 19c Bestndigkeit gegen Flssigkeiten (IEC 60512-19
13、-3:1997) This European Standard was approved by CENELEC on 1997-10-01. 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 bibliog
14、raphical references concerning 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
15、of a CENELEC member into its own 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, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherland
16、s, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1997 CENELEC A
17、ll rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60512-19-3:1997 EEN60512-19-3:1997 BSI 04-1999 2 Foreword The text of document 48B/592/FDIS, future edition1 of IEC60512-19-3, prepared by SC48B, Connectors, of IECTC48, Electromechanical compo
18、nents and mechanical structures for electronic equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN60512-19-3 on 1997-10-01. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. Annexes designated “informative” ar
19、e given for information only. In this standard, Annex ZA is normative and Annex A is informative. Annex ZA has been added by CENELEC. Endorsement notice The text of the International Standard IEC 60512-19-3:1997 was approved by CENELEC as a European Standard without any modification. Contents Page F
20、oreword 2 1 Scope and object 3 2 Normative reference 3 3 Preparation of the specimen 3 4 Test method 3 5 Details to be specified 4 Annex A (informative) Types of fluidand corresponding temperature Inside back cover Annex ZA (normative) Normative references tointernational publications with their cor
21、responding European publications Inside back cover Figure 1 Conditioning phases 3 Table A.1 Inside back cover latest date by which theEN has to be implemented at national level by publication of anidentical national standard or by endorsement (dop) 1998-07-01 latest date by which the national standa
22、rds conflicting with the EN have to be withdrawn (dow) 1998-07-01EN60512-19-3:1997 BSI 04-1999 3 1 Scope and object This section of IEC 60512-19, when required by the detail specification, is used for testing electromechanical components within the scope of IEC technical committee 48. This test may
23、also be used for similar components when specified in a detail specification. The object of this test is to define a standard test method to assess the effects of accidental exposure to fluids and lubricants on electrical connecting devices. 2 Normative reference The following normative document con
24、tains provisions which, through reference in this text, constitute provisions of this section of IEC60512-19. At the time of publication, the edition indicated was valid. All normative documents are subject to revision, and parties to agreements based on this section of IEC60512-19 are encouraged to
25、 investigate the possibility of applying the most recent edition of the normative document indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 60512-2:1985, Electromechanical components for electronic equipment; basic testing procedures and meas
26、uring methods Part 2: General examination, electrical continuity and contact resistance tests, insulation tests and voltage stress tests Amendment 1 (1994). 3 Preparation of the specimen The specimen shall be fitted with the normal accessories and wired in accordance with the detail specification. T
27、he cavities behind unwired contacts shall be fitted with filler plugs. 4 Test method 4.1 Initial measurements (if applicable) The initial measurements shall be carried out in accordance with the detail specification. 4.2 Conditioning Each specimen shall be subjected to only one of the fluids indicat
28、ed in the detail specification. If the test is carried out at a temperature exceeding the fluids flash-point, appropriate safety measures shall be taken. Each cycle of conditioning comprises three phases, seeFigure 1. Figure 1 Conditioning phasesEN60512-19-3:1997 4 BSI 04-1999 4.2.1 Phase 1: Immersi
29、on or application 4.2.1.1 Liquids: immersion The connectors shall be unmated. The specimens and the liquid shall first be brought to the temperature specified in the detail specification. The specimens shall be immersed in the liquid for a period between15min and20min, unless otherwise specified in
30、the detail specification. The temperature of the fluid shall not exceed the temperature of the specimen. 4.2.1.2 Greases: application The connectors shall be mated. The specimens and the grease shall first be brought to the temperature specified in the detail specification. The grease shall then be
31、applied on the specimens as a thin film with a brush. The specimens shall then be placed in an oven for a period between15min and20min. 4.2.2 Phase 2: Storage 4.2.2.1 Liquids After withdrawal from the liquid the specimens shall be stored under normal atmospheric conditions for7h 0,5h. 4.2.2.2 Grease
32、s The specimens shall be stored under normal atmospheric conditions for7h 0,5h. 4.2.3 Phase 3: Ageing The specimens shall be mated and placed in an oven with air circulation held at the temperature specified in the detail specification for16h 0,5h. The temperature shall not be less than + 65C unless
33、 otherwise specified in the detail specification. 4.2.4 Completion of conditioning The cycle shown inFigure 1 shall be repeated totally five times. The detail specification may specify a different number of cycles as well as a different temperature and duration of the first phase. After the last cyc
34、le, before the engaging and separating force test (Test 13a), the locking mechanism may be lubricated with a lubricant as specified in the detail specification. 4.3 Measurements After the last cycle the following tests shall be carried out after the specimens have been allowed to return to normal at
35、mospheric conditions: visual examination according to Test 1a in IEC60512 (future IEC 60512-1-1); insulation resistance measurements according to Test 3a in IEC 60512 (future IEC60512-3-1); contact resistance measurements according to Test 2a or 2b in IEC 60512 (future IEC60512-2-1 or IEC60512-2-2);
36、 engaging and separating forces according to Test 13a in IEC 60512 (future IEC60512-13-1); contact retention in insert according to Test15a in IEC60512 (future IEC60512-15-1). 4.4 Requirements After this test there shall be no defects impairing normal operation, and marking of the tested specimens s
37、hall be legible. A discoloration is admissible. The result of the test shall meet the applicable requirements of the detail specification. 5 Details to be specified When this test is required by the detail specification, the following details shall be specified: a) initial measurements (if applicabl
38、e); b) types of fluid (seeAnnex A); c) number of specimens, if more than one per fluid; d) type of wire; e) number of cycles, temperature and duration of immersion, if different from this standard; f) minimum insulation resistance (if applicable); g) maximum contact resistance (if applicable); h) po
39、ssible lubrication of locking mechanism; i) engaging and separating forces; j) force of test of retention of contact in insert; k) temperature of third phase; l) temperature limit of the specimen; m) temperature of the specimen and fluid for the first phase; n) any deviation from the standard test m
40、ethod.EN60512-19-3:1997 BSI 04-1999 Annex A (informative) Types of fluid and corresponding temperature Suitable test temperatures for the first phase for different fluid families and grease are indicated in Table A.1 below: Table A.1 Annex ZA (normative) Normative references to international publica
41、tions with their corresponding European publications This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subs
42、equent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). NOTEWhen an international publication has bee
43、n modified by common modifications, indicated by (mod), the relevant EN/HD applies. Fluid family Temperature C Fuels +40 Hydraulic fluids mineral synthetic +85 +85 Liquid lubricants mineral synthetic +120 +150 Cleaning products +25 De-icing liquids +50 Extinguishing liquids 15 Cooling liquids +50 Gr
44、eases +70 Publication Year Title EN/HD Year IEC 60512-2 1985 Electromechanical components for electronic equipment Basic testing procedures and measuring methods Part 2: General examination, electrical continuity and contact resistance tests, insulation tests and voltage stress tests A1 1994 BS EN 6
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