1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58measurements Part 14-2: Sealing tests Test 14b: Sealing Fine air leakageThe European Standard EN 60
2、512-14-2:2006 has the status of a British StandardICS 31.220.10Connectors for electronic equipment Tests and BRITISH STANDARDBS EN60512-14-2:2006BS EN 60512-14-2:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on June 30 2006 BSI 2006ISBN 0
3、580 48673 7Cross-referencesThe 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 of the BSI Electronic Ca
4、talogue 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.Summary of pagesThis documen
5、t comprises a front cover, an inside front cover, the EN title page, pages 2 to 6, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsA list of organizations re
6、presented on this committee can be obtained on request to its secretary. present 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 th
7、em in the UK.National forewordThis British Standard is the official English language version of EN 60512-14-2:2006. It is identical with IEC 60512-14-2:2006. The UK participation in its preparation was entrusted to Technical Committee EPL/48, Electromechanical components and mechanical structures fo
8、r electronic equipment, which has the responsibility to: aid enquirers to understand the text;EUROPEAN STANDARD EN 60512-14-2 NORME EUROPENNE EUROPISCHE NORM May 2006 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee f
9、r Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60512-14-2:2006 E ICS 31.220.10 English version Connectors for electronic equipment - Test
10、s and measurements Part 14-2: Sealing tests - Test 14b: Sealing - Fine air leakage (IEC 60512-14-2:2006) Connecteurs pour quipements lectroniques - Essais et mesures Partie 14-2: Essais dtanchit - Essai 14b: Etanchit - Micro-fuite dair (CEI 60512-14-2:2006) Steckverbinder fr elektronische Einrichtun
11、gen - Mess- und Prfverfahren Teil 14-2: Prfungen der Dichtheit - Prfung 14b: Dichtheit - Kleine Leckrate (IEC 60512-14-2:2006) This European Standard was approved by CENELEC on 2006-04-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions fo
12、r 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 application to the Central Secretariat or to any CENELEC member. This European Standard exists in three offi
13、cial versions (English, French, German). A version in any other language made by translation under the responsibility 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 comm
14、ittees of Austria, Belgium, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdo
15、m. 2 Foreword The text of document 48B/1605/FDIS, future edition 1 of IEC 60512-14-2, prepared by SC 48B, Connectors, of IEC TC 48, Electromechanical components and mechanical structures for electronic equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60512-
16、14-2 on 2006-04-01. This standard is to be read in conjunction with EN 60512-1 and EN 60512-1-100 which explains the structure of the EN 60512 series. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard
17、or by endorsement (dop) 2007-01-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2009-04-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60512-14-2:2006 was approved by CENELEC as a European Stand
18、ard without any modification. _ EN 60512-14-2:2006 3 EN 60512-14-2:2006 CONNECTORS FOR ELECTRONIC EQUIPMENT TESTS AND MEASUREMENTS Part 14-2: Sealing tests Test 14b: Sealing Fine air leakage 1 Scope and object This part of IEC 60512, when required by the detail specification, is used for testing con
19、nectors within the scope of IEC technical committee 48. It may also be used for similar devices when specified in a detail specification. The object of this part of IEC 60512 is to detail a standard test method to assess the effectiveness of seals against gas pressure differentials. NOTE The test ma
20、y be done using two test chambers; this facilitates the detection of tracer gas and operation at low barometric pressures, for example, in mountainous regions. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only
21、 the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60512-1-1, Connectors for electronic equipment Tests and measurements Part 1-1: General examination Test 1a: Visual examination 3 Terms and definitions For the pu
22、rposes of this document, the following terms and definitions apply. 3.1 gas gas is used in the generic sense and therefore includes mixtures including air. No assessment of the corrosive or other similar chemical or physical reactions between gases and material involved is intended 3.2 leakage rate
23、loss of pressure per test chamber volume with respect to time 4 Preparations 4.1 Preparation of specimen The specimen shall consist of a connector with its terminations, as given in the detail specification. It may be necessary to modify the connector in order to conduct this test. The laboratory do
24、ing so shall satisfy themselves, and so report, that any modification will not affect the validity of the test. NOTE This may, for some designs, involve irreversible alteration to the connectors. EN 60512-14-2:2006 4 44.2 Equipment The performance of this test requires the provision of chambers capa
25、ble of withstanding high vacuum and pumps capable of providing this. Laboratories shall satisfy themselves of the capabilities of such equipment used. 4.3 Lubricant or sealing substance If the detail specification so requires, the specified lubricant or sealing substance shall be applied in the mann
26、er given in the detail specification. Care shall be taken that no lubrication or sealant contains substances incompatible with the tracer gas used. 4.4 Mounting and instrumentation 4.4.1 Mounting The specimen shall be mounted on a plate forming part of a chamber that can be evacuated to provide a pr
27、essure difference of (1005) kPa between the front and rear faces of the sealing system under test. Another chamber shall surround the other side of the sealing system so that the concentration of a tracer gas may be controlled. Alternatively, the high-pressure chamber may be pressurized to achieve t
28、he same pressure differential. It is also permitted to use a combination of pressure and vacuum to the same effect. It may be that the detail specification calls for a high vacuum test. This will necessitate a high vacuum on the low-pressure side. 4.4.2 Instrumentation A leak detection means, for ex
29、ample a mass spectrometer, shall be connected to the low-pressure (vacuum) side of the system. Means of recording pressures in the chambers detailed in 4.4.1 shall be provided. 5 Method 5.1 Procedure Tracer gas, for example pure or 10 % helium or argon, shall be introduced into the high pressure cha
30、mber; any leakage shall be detected by means of a device as detailed in 4.4.2. Unless otherwise stated in the detail specification, the test shall be done at normal room temperature. NOTE 1 The method is suitable for connectors whose leakage rate is less than 1 Pacm3/s at a pressure differential of
31、100 kPa. NOTE 2 Leakage rates of less than 0,01 Pacm3/s are not considered valid unless the specimen has been ultrasonically or otherwise cleaned before testing. 5.2 Measurements 5.2.1 Initial measurements A visual examination according to IEC 60512-1-1 shall be done. There shall be no defects which
32、 would impair the validity of the test. 5 EN 60512-14-2:2006 5.2.2 Test measurements and requirements The leakage rate shall not be in excess of that given in the detail specification. NOTE In the case of the detail specification calling for no leakage, this should be taken to mean, the threshold of
33、 detection, of the apparatus used. In this case, the appropriate detail of the apparatus should be reported in any documentation supporting claims of compliance to this standard. See Clause 7. 5.2.3 Final measurements Visual examination according to IEC 60512-1-1 shall be done with 10 magnification.
34、 Any defects, which would impair the normal functioning of the connector, shall be documented. 6 Details to be specified When this test is required by a detail specification, the following shall be given therein: a) preconditioning required; b) lubricant to be applied, means and quantity; or state l
35、ubricant not required; c) if high vacuum testing is required and if so, the level of vacuum required; d) maximum permitted leakage or state no leak permitted; NOTE It should be recognised that no leak permitted means below the detection or noise level of the detection apparatus. e) any deviation fro
36、m the standard test method. 7 Documentation Any documentation supporting claims of conformance to this test shall include details of the test apparatus, resolution and accuracy of the detection means used. _ Annex ZA (normative) Normative references to international publications with their correspon
37、ding European publications The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE When an internati
38、onal publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60512-1-1 1)Connectors for electronic equipment - Tests and measurements Part 1-1: General examination - Test 1a: Visual examination EN 60512-1-1 20022)1)
39、Undated reference. 2)Valid edition at date of issue. EN 60512-14-2:2006 6 blankBS EN BSI389 Chiswick High RoadLondonW4 4AL60512-14-2:2006BSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe a
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