BS EN 50191-2010 Erection and operation of electrical test equipment《电工试验设备的安装和操作》.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 50191:2010Erection and operation ofelectrical test equipmentBS EN 50191:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 50191:201

2、0. Itsupersedes BS EN 50191:2001 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PEL/99, Erection and operation of power installations.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does

3、 not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2010ISBN 978 0 580 68186 8ICS 17.220.20; 19.080; 29.020Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under th

4、e authority of theStandards Policy and Strategy Committee on 30 November 2010.Amendments issued since publicationDate Text affectedBS EN 50191:2010EUROPEAN STANDARD EN 50191 NORME EUROPENNE EUROPISCHE NORM October 2010 CENELEC European Committee for Electrotechnical Standardization Comit Europen de

5、Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50191:2010 E ICS 17.220.20; 19.080; 29.020

6、 Supersedes EN 50191:2000English version Erection and operation of electrical test equipment Installation et exploitation des quipements lectriques dessais Errichten und Betreiben elektrischer Prfanlagen This European Standard was approved by CENELEC on 2010-10-01. CENELEC members are bound to compl

7、y 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 application to the Central Secr

8、etariat 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 to the Central Secretariat has the same status as

9、the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway,

10、 Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 50191:2010EN 50191:2010 2 Foreword This European Standard was prepared by CENELEC BTTF 128-2, Erection and operation of electrical test equipment. It was submitted to the formal vote and was appr

11、oved by CENELEC as EN 50191 on 2010-10-01. This document supersedes EN 50191:2000. The principal changes compared to EN 50191:2000 are as follows (minor changes are not listed): Update of the normative references; 3.12 electrically skilled person (modified definition); 4.1 Structure of test installa

12、tion changed; 4.2.1 Electro-optical safety device specified; 4.3.5 Requirements for RCM specified; 4.7 associate the additional requirements when using safety test probes; 5.2 time of repetition of instruction specified to one year. Attention is drawn to the possibility that some of the elements of

13、this document may be the subject of patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights. 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 e

14、ndorsement (dop) 2011-10-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2013-10-01 _ BS EN 50191:2010 3 EN 50191:2010 Contents Introduction . 41 Scope . 52 Normative references . 53 Terms and definitions. 64 Erection of test installations 84.1 Gener

15、al . 84.2 Test stations with automatic protection against direct contact . 114.3 Test stations without automatic protection against direct contact 114.4 Test laboratories and experimental stations . 124.5 Temporary test station 134.6 Test station without test personnel in permanent attendance 134.7

16、Additional requirements when using safety test probes . 135 Operation of test installations . 145.1 General . 145.2 Personnel 145.3 Preparation of tests, switching operations in test stations 155.4 Performance of tests 16Annex A (normative) Tables . 17Annex B (informative) Example of an application

17、illustrating the prohibition zone and test area 21Bibliography 23Figures Figure 1 Measurement of discharge current 14Figure A.1 Clarification of the dimensions stated in Table A.3 19Figure B.1 Prohibition zone and test area in a test laboratory . 22Tables Table A.1 Reference values for permissible s

18、inusoidal body currents and contact voltages at frequencies 500 Hz 17Table A.2 Prohibition zone (s) dependent on test voltages to earth (U) 18Table A.3 Horizontal distance between the barrier and the prohibition zone in relation to the height of the barrier and the distance of the danger point from

19、the floor 19Table A.4 Minimum distance between openings in the barrier and the prohibition zone in relation to the width of the opening 20 BS EN 50191:2010EN 50191:2010 4 Introduction With reference to Clause 5 of this European Standard, prepared in the field of application of Article 137 of the EC

20、Treaty, the user should be aware that standards have no formal legal relationship with Directives which may have been made under Article 137 of the Treaty. In addition, national legislation in the Member States may contain more stringent requirements than the minimum requirements of a Directive base

21、d on Article 137 of the Treaty. Information on the relationship between the national legislation implementing Directives based on Article 137 of the Treaty and this European Standard may be given in a national foreword of the national standard implementing this European Standard. BS EN 50191:2010 5

22、EN 50191:2010 1 Scope 1.1 This European Standard is applicable to the erection and operation of fixed and temporary electrical test installations. 1.2 Compliance with this European Standard is not necessary, if contact with live parts presents no danger. This is the case when one of the following co

23、nditions is satisfied at live exposed points: a) the voltage at frequencies above 500 Hz does not exceed 25 V a.c. or 60 V d.c. and complies with the requirements for SELV or for PELV in accordance with HD 60364-4-41; b) in case of voltages at frequencies up to 500 Hz exceeding 25 V a.c. or 60 V d.c

24、., the resultant current through a non-inductive resistance of 2 k does not exceed 3 mA a.c. (r.m.s.) or 12 mA d.c; c) at frequencies above 500 Hz the national determined current and voltage values shall be applied. If there are no national requirements determined reference values for permissible bo

25、dy currents and contact voltages can be taken from Table A.1; d) the discharge energy does not exceed 350 mJ. NOTE 1 Even though compliance with the requirements of this European Standard is not necessary, if one of the above-mentioned conditions is satisfied, other potential risks e. g. risk of fir

26、e and explosion shall be considered and appropriate measures be taken. NOTE 2 Ref. 1.2 b) - test laboratory or experimental station; - temporary test installation 3.2 test station appropriately identified test installation within a defined area. In test stations a distinction is made between those w

27、ith and those without automatic positive protection against direct contact 3.2.1 test station with automatic protection against direct contact test station in which the test object and all live parts of the test installation have automatically activated full protection against direct contact in an e

28、nergized condition NOTE 1 At a test station with automatic protection against direct contact, there is generally only one person employed, e. g. in the line of series production or in electric workshops, repair and service shops. NOTE 2 Automatic protection means that voltages can only occur when th

29、e safety devices are effective, e.g. when the cover or door of the test station is closed. 3.2.2 test station without automatic protection against direct contact test station in which parts of the test object or live parts of the test installation are not fully protected against direct contact durin

30、g testing. This includes, for instance, test areas in electric workshops, laboratories, measurement and experimental areas 3.3 test laboratory test installations with minimum one test station in a securely enclosed space or within an area separated from adjacent work areas, in which several persons

31、are generally employed on test work on larger test objects remaining there for a longer period of time BS EN 50191:2010 7 EN 50191:2010 3.4 experimental station test installations with minimum one test station for performing experiments or tests within the scope of research and development work. In

32、general, no routine tests are performed in experimental stations 3.5 temporary test installation test installation with minimum one test station erected for a short time in order to perform tests on individual test objects 3.6 prohibition zone volume around live parts which should not be breached if

33、 full protection against direct contact with these parts is not provided 3.7 test area area around the test assembly which is separated from the surrounding area 3.8 signal lights lights which are clearly visible from outside the boundaries of the test area giving red or green signals to indicate th

34、e operational status inside the test area 3.9 indicator lights serve to indicate the switching status on the control panels. They are not an alternative to required signal lights 3.10 risk combination of the probability and the degree of the possible injury or damage to health of a person exposed to

35、 a hazard or to hazards 3.11 electrical hazard source of possible injury or damage to health in presence of electrical energy from an electrical installation 3.12 (electrically) skilled person person with relevant education, knowledge and experience to enable him or her to analyse risks and to avoid

36、 hazards which electricity could create IEV 826-18-01, mod. 3.13 (electrically)instructed person person adequately advised by skilled persons to enable him or her to avoid dangers which electricity may create IEV 826-18-02, mod. 3.14 nominated person in control of a work activity nominated person wi

37、th ultimate responsibility for the work activity. Some of these duties can be delegated to others as required BS EN 50191:2010EN 50191:2010 8 3.15 Operational status 3.15.1 out of operation status when a) all power supplies, signalling and control circuits are switched off and secured against unauth

38、orized switching-on, b) all safety precautions necessary before entering the test area (for voltages exceeding 1 kV, e.g. earthing, short-circuiting) have been taken 3.15.2 ready for operation status when a) the power supplies for the switchgear signalling and control circuits of the test installati

39、ons are switched on, b) the green signal lights, where these are required in accordance with the provisions in Clause 4, are on, c) all power supplies for the test voltage are switched off and secured against unintentional switching, d) the safety precautions specified in 3.15.1 b) (“out of operatio

40、n“) are in force 3.15.3 ready to switch on status when a) all power supplies for the test voltage are switched off, b) all entries to the test area are closed, c) the red signal lights are switched on, d) the safety precautions specified in 3.15.1 b) (“out of operation“) are no longer in force 3.15.

41、4 in operation status when a) all entries to the test area are closed, b) the red signal lights are switched on, c) one or more power supplies for the test voltage are switched on NOTE In Clauses 4 and 5, the technical devices for setting up the operational status “ready for operation” and “ready to

42、 switch on” are only required for certain test installations with voltages exceeding 1 kV. 4 Erection of test installations 4.1 General Test installations shall be performed and erected as a - test station, - test laboratory or experimental station, - temporary test installation. BS EN 50191:2010 9

43、EN 50191:2010 4.1.1 Protection against electric shock 4.1.1.1 Test assembly The test assembly shall be so arranged and designed that the protection against direct contact is secured by insulation of live parts, covers, enclosures, obstacles or safe distances. A safe distance is ensured, when the per

44、son carrying out the tests cannot reach the prohibition zone with parts of his/her body or tools. Safety can also be satisfied by means of a two-hand control device or the use of two safety test probes to apply the test voltage. Test leads with full protection against direct contact shall be used. T

45、wo-hand control devices shall comply with EN 574:1996 + A1:2008, Type II or IIIB. Where several persons are involved in a test, a two-hand control device shall be provided for each person of the test personnel and which are so connected that all the two hand controls are required to be operated befo

46、re the test supplies can be energised. Safety test probes shall have the adequate insulation level for the applied test voltage. No clamping devices shall be permitted for this purpose. In case of measuring instruments and auxiliary appliances of protection Class I EN 61140 (e.g. cathode ray oscillo

47、scope, sine wave generator), where the protective conductor is interrupted to facilitate testing, e.g. because the enclosure has to be isolated from earth potential, the appliance shall be supplied from an isolating transformer in accordance with EN 61558 series. If a circuit and/or the enclosure of

48、 a measuring instrument or an auxiliary appliance designed for mains connection is connected to live parts of the test assembly which can carry voltage to earth, then the internal insulation of the supplying isolating transformer shall be rated at least for this voltage. An effective protective meas

49、ure for fault protection (protection against indirect contact) shall be provided (see HD 60364-4-41,Clause 411.3). The test object shall be isolated from earth. If this is technically not possible e.g. due to the weight of the test object, than the test assembly shall be so designed and arranged in order to prevent the transfer of voltage to extraneous conductive parts. Test table boards shall be made of insulating materials. 4