1、BRITISH STANDARD BS EN 50249:2002 Electromagnetic locators for buried pipes and cables Performance and safety The European Standard EN 50249:2002 has the status of a British Standard ICS 17.220.20 BS EN 50249:2002 This British Standard was published under the authority of the Standards Policy and St
2、rategy Committee on 28 April 2003 BSI 28 April 2003 ISBN 0 580 41639 9 National foreword This British Standard is the official English language version of EN 50249:2002. The UK participation in its preparation was entrusted to Technical Committee PEL/13, Electricity meters, which has the responsibil
3、ity to: A list of organizations represented on this committee can be obtained 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 “Internat
4、ional Standards Correspondence Index”, or by using the “Search” facility 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 Briti
5、sh Standard does not of itself confer immunity from legal obligations. 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 UK interests informed; monitor related international and
6、 European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 38, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued.
7、 Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 50249 NORME EUROPENNE EUROPISCHE NORM October 2002 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central
8、Secretariat: rue de Stassart 35, B - 1050 Brussels 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50249:2002 E ICS 17.220.20 English version Electromagnetic locators for buried pipes and cables - Performance and safety Local
9、isateurs lectromagntiques pour cbles et canalisations enterrs - Performances et scurit Elektromagnetische Ortungsgerte fr unter Erde verlegte Rohre und Kabel - Leistungsmerkmale und Sicherheit This European Standard was approved by CENELEC on 2002-07-01. CENELEC members are bound to comply with the
10、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 Secretariat or
11、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 the officia
12、l versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. 2002:9
13、4205 NE 2 Foreword This European Standard was prepared by CENELEC BTWG 72-2, Metallic pipe and cable locators. The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50249 on 2002-07-01. The following dates were fixed: - latest date by which the EN has to be impleme
14、nted at national level by publication of an identical national standard or by endorsement (dop) 2003-07-01 - latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2005-07-01 Annexes designated “normative“ are part of the body of the standard. Annexes designat
15、ed “informative“ are given for information only. In this standard, Annexes A, C and D are normative and Annex B is informative. Of all pipe and cable locators, those employing electromagnetic principles are the most commonly used for locating buried metallic plant. Pipe and cable locators are used f
16、or the following purposes: to determine the position of a buried target line at a particular location; to trace the route of a buried target line; to determine the position of lines buried adjacent to target lines. Such locators make a major contribution towards minimizing the risk of damaging burie
17、d plant, and injury to operatives, during subsequent excavation. This European Standard specifies the minimum performance requirements to which all pipe and cable locators should conform, in order to ensure that locators have an acceptable performance consistent with the users needs. _ EN50249:20022
18、 3 2002:94205 NE Contents 1 Scope. 5 2 Normative references 5 3 Definitions. 6 4 Principles of operation. 7 5 General requirements 8 5.1 Enclosure 8 5.2 Robustness. 8 5.3 UV protection.8 5.4 Controls. 8 5.4.1 Operation8 5.4.2 Control size.8 5.5 Temperature range 8 5.6 Relative humidity . 8 5.7 Batte
19、ry housing access 9 5.8 Power supply polarity protection. 9 5.9 Power supply cell type . 9 5.10 Battery operating life 9 5.11 Low battery warning. 9 5.11.1 General.9 5.11.2 Receiver test requirements 10 5.11.3 Transmitter test requirements 10 5.12 Transmitter case buoyancy 10 5.13 External electrica
20、l connector protection . 10 5.14 Hazardous electrical contact 10 5.15 Surface temperature10 5.16 Electromagnetic compatibility. 10 5.17 Safety 10 6 Transmitter construction 11 6.1 Transmitter case11 6.2 Weight. 11 7 Electrical characteristics of the transmitter 11 7.1 General. 11 7.2 On/off indicati
21、on 11 7.3 Frequency band.11 7.4 Output level. 11 7.5 Output current.12 7.6 Monitoring 12 7.7 Operation across live conductors Safety . 12 7.8 Operation across live conductors Protection . 12 8 Construction of the receiver 12 9 Electrical characteristics of the receiver 13 9.1 General. 13 9.2 Visual/
22、audio indication . 13 9.3 Sensitivity 13 9.4 Selectivity 14 EN50249:200232002:94205 NE 4 9.5 Single target line performance . 15 9.5.1 Response Width15 9.5.2 Location Accuracy.15 9.5.3 Depth Measurement Accuracy (if provided) . 15 9.6 Multiple target line performance. 15 9.6.1 Response width.15 9.6.
23、2 Location accuracy.15 9.6.3 Depth measurement accuracy (if provided) 18 10 Labels. 18 11 Documentation 18 12 Cross references. 18 Annex A (normative) Test methods. 21 Annex B (informative) General information for the user. 33 Annex C (normative) Documentation provided by the manufacturer 36 Annex D
24、 (normative) Special national conditions. 38 Figure 1 Single target line Response width 16 Figure 2 Single target line Location accuracy.16 Figure 3 Multiple target lines Response width 17 Figure 4 Multiple target lines Location accuracy.17 Figure A.1.a Test rig Plan view .23 Figure A.1.b Receiver t
25、est position x-x .23 Figure A.2 Receiver audible output test apparatus 27 Figure A.3 Test method and test equipment for impact test .31 Table 1 Cross-references19 EN50249:20024 5 2002:94205 NE 1 Scope This European Standard specifies the performance and safety requirements for outdoor portable elect
26、romagnetic locators for the location of buried conductive pipes, cables and wires (including allied components) by means of detecting the electromagnetic field caused by a flow of a.c. current. An electromagnetic locator is not designed for use for specific cable identification purposes. This Europe
27、an Standard excludes the following locators and locating systems: a) radar systems; b) fix point marker systems; c) vibrating probes; d) apparatus which detect such items as internal wiring, structural supports, and conduit in buildings; e) apparatus and built-in facility designed for the detection
28、of metallic objects; f) sondes and accessories for use for pipe location and guidance of drilling systems; g) non-portable locators; h) cable identifiers; i) cable/insulation fault locators. This standard is only applicable to locators, any accessible part of which is at less than hazardous live, as
29、 defined in EN 61010-1. 2 Normative references 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, subsequent
30、 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). EN 50065-1 Signalling on low-voltage electrical ins
31、tallations in the frequency range 3 kHz to 148,5 kHz Part 1: General requirements, frequency bands and electromagnetic disturbances EN 60068-2-5 Environmental testing Part 2 : Tests Test Sa: Simulated solar radiation at ground level (IEC 60068-2-5) EN 60068-2-6 Environmental testing Part 2 : Tests T
32、est Fc: Vibration (sinusoidal) (IEC 60068-2-6) EN 60068-2-29 Basic environmental testing procedures Part 2: Tests Test Eb and guidance: Bump (IEC 60068-2-29) EN 60068-2-32 Basic environmental testing procedures Part 2: Tests Test Ed: Free fall (IEC 60068-2-32) EN 60068-2-64 Environmental testing Par
33、t 2: Test methods Test Fh: Vibration, broad- band random (digital control) and guidance (IEC 60068-2-64) EN50249:200252002:94205 NE 6 EN 60086-2 Primary batteries Part 2: Physical and electrical specifications (IEC 60086-2) EN 60315 Series Methods of measurement on radio receivers for various classe
34、s of emission (IEC 60315 series) EN 60318 Series Electroacoustics Simulators of human head and ear (IEC 60318 series) EN 60529 Degrees of protection provided by enclosures (IP code) (IEC 60529) EN 61000-6-2 Electromagnetic compatibility (EMC) Part 6-2: Generic standards Immunity for industrial envir
35、onments (IEC 61000-6-2) EN 61000-6-3 Electromagnetic compatibility (EMC) Part 6-3: Generic standards Emission standard for residential, commercial and light-industrial environments (IEC 61000-6-3) EN 61010-1 Safety requirements for electrical equipment for measurement, control and laboratory use Par
36、t 1: General requirements (IEC 61010-1) EN 61010-2-031 Safety requirements for electrical equipment for measurement, control and laboratory use Part 2-031: Particular requirements for hand-held probe assemblies for electrical measurement and test (IEC 61010-2-031) EN 61010-2-032 Safety requirements
37、for electrical equipment for measurement, control and laboratory use Part 2-032: Particular requirements for hand-held current clamps for electrical measurement and test (IEC 61010-2-032) 3 Definitions For the purposes of this standard the following definitions apply. 3.1 line any metallic (conducti
38、ve) pipe, wire or cable 3.2 locator any device or system for determining the position of buried lines 3.3 target line particular line that the user is trying to locate 3.4 signal alternating magnetic field resulting from the flow of alternating electric current 3.5 passive signal signal originating
39、from a source other than a transmitter which emanates from lines, e.g. 50 Hz power energy, re-radiated VLF energy and emission from lines carrying data 3.6 receiver part of a locator which detects a signal and responds to changes in the signal EN50249:20026 7 2002:94205 NE 3.7 active locator locator
40、 comprising a transmitter and a receiver 3.8 transmitter part of an active locator which causes a current to flow in a line or lines 3.9 passive locator receiver that locates lines by detecting passive signals 3.10 active mode mode in which the receiver responds to a signal generated by a transmitte
41、r 3.11 passive mode mode in which the receiver responds to passive signals 3.12 induction mode active mode in which a transmitter causes a signal by the use of an induction coil, which does not require direct access to the line 3.13 clamp mode active mode in which a transmitter causes a signal by th
42、e use of a toroidal magnetic core placed around the line 3.14 direct connection mode active mode in which a transmitter causes a signal by direct electrical connection of the transmitter to the line 3.15 power mode mode in which the passive signal is caused by the electric power distribution system
43、3.16 radio mode mode in which the passive signal is caused other than by the electric power distribution system 3.17 response change in receiver output as it reacts to a signal 3.18 detectable current range range of current over which the receiver conforms to its specification 4 Principles of operat
44、ion Principles of operation and operating modes are outlined in Annex B. EN50249:200272002:94205 NE 8 5 General requirements 5.1 Enclosure All enclosures shall be IP54, tested as specified in A.3.14. 5.2 Robustness Receivers and transmitters shall suffer no detrimental effects as specified in A.3.12
45、, when subjected to the following robustness requirements: a) vibration as specified in A.3.12.1; b) free fall as specified in A.3.12.2; c) bump as specified in A.3.12.3; d) impact as specified in A.3.12.4. 5.3 UV protection Locators shall be ultraviolet (UV) protected. When tested in accordance wit
46、h A.3.12.5, no cracking or distortion shall occur. 5.4 Controls The controls shall be robust and shall be the minimum necessary, when subjected to the following requirements: 5.4.1 Operation The receiver shall be capable of being operated by the hand used to carry the instrument for a given mode of
47、operation. The controls shall be robust and shall be the minimum necessary. Conformity shall be checked by inspection. 5.4.2 Control size Receivers and transmitters shall have controls of a size permitting easy and positive operation while the operator is wearing a pair of heavy-duty gloves. Conform
48、ity shall be checked by satisfactory operation of the receiver and transmitter, including adjustment of all controls, while wearing a pair of heavy-duty gloves. 5.5 Temperature range The receiver and transmitter shall operate satisfactorily within at least the temperature range of 10 C to +50 C. Con
49、formity shall be checked by the tests of A.3.8. 5.6 Relative humidity The receiver and transmitter shall operate satisfactorily at 80 % RH. Conformity shall be checked by the test of A.3.15. EN50249:20028 9 2002:94205 NE 5.7 Battery housing access Receiver and transmitter battery housings containing cells which require regular access shall allow access without the use of
