1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 50116 : 1996 The European Standard EN
2、 50116 : 1996 has the status of a British Standard ICS 35.020; 35.260.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Information technology equipment Routine electrical safety testing in production Licensed Copy: sheffieldun sheffieldun, na, Mon Sep 18 02:58:40 BST 2006, U
3、ncontrolled Copy, (c) BSIBS EN 50116 : 1996 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 December 1996 BSI 1996 The following BSI references relate to the wor
4、k on this standard: Committee reference EPL/74 Draft for comment 93/202003 DC ISBN 0 580 26837 3 Amendments issued since publication Amd. No. Date Text affected Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee EPL/74, Safe
5、ty and energy efficiency of information technology equipment, on which the following bodies were represented: BSI Testing Services British Approvals Board for Telecommunications British Computer Society British Electrotechnical Approvals Board British Telecommunications plc Department of Trade and I
6、ndustry (Consumer Safety Unit) Federation of the Electronics Industries Health and Safety Executive Power Supply Manufacturers Association Licensed Copy: sheffieldun sheffieldun, na, Mon Sep 18 02:58:40 BST 2006, Uncontrolled Copy, (c) BSIBS EN 50116 : 1996 BSI 1996 i Contents Page Committees respon
7、sible Inside front cover National foreword ii Foreword 2 Text of EN 50116 3 Licensed Copy: sheffieldun sheffieldun, na, Mon Sep 18 02:58:40 BST 2006, Uncontrolled Copy, (c) BSIii BSI 1996 BS EN 50116 : 1996 National foreword This British Standard has been prepared by Technical Committee EPL/74 and i
8、s the English language version of EN 50116 : 1996, Information technology equipment Routine electrical safety testing in production, published by the European Committee for Electrotechnical Standardization (CENELEC). Cross-references Publication referred to Corresponding British Standard EN 60950 :
9、1992 BS EN 60950 : 1992 Safety of information technology equipment, including electrical business equipment Compliance with a British Standard does not of itself confer immunity from legal obligations. Licensed Copy: sheffieldun sheffieldun, na, Mon Sep 18 02:58:40 BST 2006, Uncontrolled Copy, (c) B
10、SICENELEC European Committee for Electrotechnical Standardization Comite Europe en de Normalisation Electrotechnique Europa isches Komitee fu r Elektotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1996 Copyright reserved to CENELEC members Ref. No. EN 50116 : 1996 E EURO
11、PEAN STANDARD EN 50116 NORME EUROPE ENNE EUROPA ISCHE NORM August 1996 ICS 35.020; 35.260.10 Descriptors: Information technology equipment, routine test, testing in production, electrical safety, test procedure English version Information technology equipment Routine electrical safety testing in pro
12、duction Mate riel de traitement de linformation Essais individuels de se rie, en production, pour la ve rification de la se curite e lectrique Einrichtungen der Informationstechnik Stu ckpru fungen fu r die Fertigung in bezug auf elecktrische Sicherheit This European Standard was approved by CENELEC
13、 on 1995-11-28. 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 such national standards
14、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 own language and notified
15、to the Central Secretariat has the same status as the official versions. CENELEC members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom
16、. Licensed Copy: sheffieldun sheffieldun, na, Mon Sep 18 02:58:40 BST 2006, Uncontrolled Copy, (c) BSIPage 2 EN 50116 : 1996 BSI 1996 Foreword This European Standard has been prepared by Technical Committee CENELEC TC 74, Safety and energy efficiency of information technology equipment. The text of
17、the draft was submitted to the formal vote in August 1995 and was approved by CENELEC as EN 50116 on 1995-11-28. EN 60950 specifies type tests only. Type tests may not be suitable as routine tests to be carried out on equipment during the manufacturing process or at the end of the production line. N
18、evertheless it is recognised that some safety tests are necessary in order to guarantee an acceptable level of production uniformity, which is also a requirement for certified products. This standard defines tests to measure the resistance of the earthing circuit and to check the insulation between
19、the primary circuits and accessible conductive parts. In addition, it defines the documentation to be maintained by the manufacturer. 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 or by endorsement
20、 (dop) 1996-12-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 1998-06-01 For products which have complied with the relevant national standard before 1998-06-01, as shown by the manufacturer or by a certification body, this previous standard may cont
21、inue to apply for production until 2003-06-01. Contents Page 1 Scope 3 2 Conformance 3 3 Normative references 3 4 Definitions 3 5 Tests 3 5.1 Resistance of the protective earthing circuit 3 5.2 Electric strength 3 Licensed Copy: sheffieldun sheffieldun, na, Mon Sep 18 02:58:40 BST 2006, Uncontrolled
22、 Copy, (c) BSIPage 3 EN 50116 : 1996 BSI 1996 1 Scope This European Standard applies to Information Technology Equipment. It is intended to be used in conjunction with Operational Document CCA - 201. This European Standard defines the routine electrical safety tests and their procedures to be applie
23、d during or after the manufacturing process of equipment certified or declared as complying with EN 60950. Alternatively, manufacturers can apply the tests of this Standard to sub-assemblies and components so long as the final equipment continues to comply with EN 60950. In all cases the application
24、 of the tests detailed in this Standard are design dependent and need to be defined by the manufacturer, taking account of all of the conditions identified in Operational Document CCA - 201. NOTE. Operational Document CCA - 201 is available from National Committees and test houses. 2 Conformance In
25、order to conform to this European Standard an equipment shall pass the tests of 5.1 and 5.2 where applicable. 3 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places i
26、n the text and the publications are listed hereafter. For dated references, subsequent 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 applies.
27、EN 60950 Safety of information technology equipment, including electrical business equipment (IEC 950 modified) Operational Document CCA - 201 Factory inspection procedures - CCA Harmonised requirements 4 Definitions The definitions of EN 60950 apply. In addition, for the purpose of this Standard th
28、e following definition applies. routine electrical safety test A test to which each individual device is subjected during or after manufacture, to detect manufacturing failures and unacceptable tolerances in manufacturing and materials. 5 Tests 5.1 Resistance of the protective earthing circuit The p
29、urpose of this test is to check that the resistance between accessible parts required to be reliably earthed for safety reasons and the protective earthing terminal or earthing contact is not higher than 0,1V. The test shall be carried out by circulating a test current 1,5 times the current capacity
30、 of any hazardous voltage circuit, but not more than 25 A (a.c. or d.c.), for the time required to obtain a meaningful reading, through parts to be tested and the protective earthing terminal or earthing contact. It is permitted to include the power cord (if any) in the resistance measurement, and,
31、if the result exceeds 0,1V, to subtract the resistance of the protective earthing conductor of the power cord. 5.2 Electric strength The test is performed by applying to the complete equipment a sinusoidal a.c. voltage of at least 1500 V (for basic insulation) or 3000 V (for reinforced insulation) 5
32、0 Hz or 60 Hz, or an equivalent d.c. voltage, selected and applied in accordance with subclause 5.3 of EN 60950. The test voltage shall be applied between the primary circuit and accessible conductive parts, excluding secondary circuits, and shall be maintained for at least 1 s and no more than 6 s.
33、 Testing of components connected between primary and secondary circuits shall be performed before final assembly. NOTE 1. Separate testing of components is necessary because tests between the primary circuit and accessible conductive parts of the complete equipment will not necessarily check compone
34、nts and insulation connected between primary and secondary circuits No insulation breakdown shall occur during the tests. For the purpose of this Standard, an insulation breakdown, as indicated by a trip current, is defined as any significant increase from the steady state current measured during th
35、e electric strength test. The test equipment shall be provided with a means of indicating the test voltage and the insulation breakdown, e.g. visible and/or audible. The trip current level shall be determined by the manufacturer of the equipment under test. NOTE 2. The trip current should be set at
36、the minimum practical value. As a reference this value is usually in the order of a fewmA for d.c. measurements. For a.c. measurements the current flowing through the r.f.i. filter capacitors has to be taken into account. NOTE 3. When testing equipment incorporating solid-state components that might
37、 be damaged by a secondary effect of the test, the test may be conducted without the components electrically connected, providing that the wiring and terminal spacings are maintained. NOTE 4. Document CCA - 201 requires that all test results shall be kept available. The choice of support and format
38、for reports is left to the manufacturers; separate forms (one for each equipment) or lists of equipment, grouped according to the most suitable parameters (periods of time, model, etc.) are equally acceptable. Licensed Copy: sheffieldun sheffieldun, na, Mon Sep 18 02:58:40 BST 2006, Uncontrolled Cop
39、y, (c) BSIPage 4 EN 50116 : 1996 BSI 1996 The only obligation is the availability of data and their immediate interpretability for all equipment leaving the production line. For every piece of equipment tested, the following data are filed: date of test; model of the equipment; serial number of the
40、equipment or another identifier permitting the identification without ambiguity; value of earthing circuit resistance with the corresponding current value (*); value of voltage applied during the electric strength test (*); quick-reference information that the whole set of tests has/has not been suc
41、cessful. As an alternative to the values referred with an (*) above, the information of the accomplishment of each test (e.g. pass or fail) is permitted, if the pass/fail criteria are described elsewhere on the test report. Licensed Copy: sheffieldun sheffieldun, na, Mon Sep 18 02:58:40 BST 2006, Un
42、controlled Copy, (c) BSI BSI 1996 BS EN 50116 : 1996 List of references See national foreword. Licensed Copy: sheffieldun sheffieldun, na, Mon Sep 18 02:58:40 BST 2006, Uncontrolled Copy, (c) BSIBSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
43、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BSI British Standards Institution BSI is the independent national body responsible for preparing British Stand
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