1、BSI Standards PublicationOptical fibre cablesPart 1-24: Generic specification Basic optical cable test procedures Electrical test methodsBS EN 60794-1-24:2014BS EN 60794-1-24:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 60794-1-24:2014. It is identical t
2、o IEC 60794-1-24:2014. Together with BS EN 60794-1-2:2014, BS EN 60794-1-20:2014, BS EN 60794-1-21, BS EN 60794-1-22:2012 and BS EN 60794-1-23:2014, it supersedes BS EN 60794-1-2:2003, which will be withdrawn upon publication of BS EN 60794-1-21.The UK participation in its preparation was entrusted
3、by Technical Committee GEL/86, Fibre optics, to Subcommittee GEL/86/1, Optical fibres and cables.A list of organizations represented on this subcommittee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are res
4、ponsible for its correct application. The British Standards Institution 2014. Published by BSI Standards Limited 2014ISBN 978 0 580 74249 1ICS 33.180.10Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Stan
5、dards Policy and Strategy Committee on 30 November 2014.Amendments/corrigenda issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60794-1-24 August 2014 ICS 33.180.10 Supersedes EN 60794-1-2:2003 (partially) English Version Optical fibre cables - Part 1-24:
6、 Generic specification - Basic optical cable test procedures - Electrical test methods (IEC 60794-1-24:2014) Cbles fibres optiques - Partie 1-24: Spcification gnrique - Mthodes fondamentales dessais applicables aux cbles optiques - Procdures - Mthodes dessais lectriques (CEI 60794-1-24:2014) Lichtwe
7、llenleiterkabel - Teil 1-24: Fachgrundspezifikation - Grundlegende Prfverfahren fr Lichtwellenleiterkabel - Elektrische Prfverfahren (IEC 60794-1-24:2014) This European Standard was approved by CENELEC on 2014-06-17. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which
8、 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 CEN-CENELEC Management Centre or to any CENELEC member. This
9、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 CEN-CENELEC Management Centre has the same status as the official versions. CENELE
10、C members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherland
11、s, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre:
12、 Avenue Marnix 17, B-1000 Brussels 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 60794-1-24:2014 E BS EN 60794-1-24:2014EN 60794-1-24:2014 - 2 - Foreword The text of document 86A/1591/FDIS, future edition 1 of IEC 60794-1-24,
13、 prepared by SC 86A “Fibres and cables“ of IEC/TC 86 “Fibre optics“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60794-1-24:2014. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical na
14、tional standard or by endorsement (dop) 2015-03-17 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2017-06-17 This document supersedes EN 60794-1-2:2003 (partially). Attention is drawn to the possibility that some of the elements of this document
15、may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 60794-1-24:2014 was approved by CENELEC as a European Standard without any modification. In the official
16、version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60794-1-2:2003 1)NOTE Harmonized as EN 60794-1-2:2003 2)(not modified). IEC 60794-1-20 NOTE Harmonized as EN 60794-1-20. 1)Withdrawn. 2)Superseded by EN 60794-1-22:2012, EN 60794-1-23:2012, EN 60794-1-2:
17、2014, EN 60794-1-20:2014, EN 60794-1-24:2014 and the future EN 60794-1-21. BS EN 60794-1-24:2014EN 60794-1-24:2014 - 2 - Foreword The text of document 86A/1591/FDIS, future edition 1 of IEC 60794-1-24, prepared by SC 86A “Fibres and cables“ of IEC/TC 86 “Fibre optics“ was submitted to the IEC-CENELE
18、C parallel vote and approved by CENELEC as EN 60794-1-24:2014. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2015-03-17 latest date by which the national standards conf
19、licting with the document have to be withdrawn (dow) 2017-06-17 This document supersedes EN 60794-1-2:2003 (partially). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifyi
20、ng any or all such patent rights. Endorsement notice The text of the International Standard IEC 60794-1-24:2014 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60
21、794-1-2:2003 1)NOTE Harmonized as EN 60794-1-2:2003 2)(not modified). IEC 60794-1-20 NOTE Harmonized as EN 60794-1-20. 1)Withdrawn. 2)Superseded by EN 60794-1-22:2012, EN 60794-1-23:2012, EN 60794-1-2:2014, EN 60794-1-20:2014, EN 60794-1-24:2014 and the future EN 60794-1-21. BS EN 60794-1-24:2014 2
22、IEC 60794-1-24:2014 IEC 2014 CONTENTS 1 Scope 5 2 Normative references 5 3 Method H1: Short-circuit test (for OPGW and OPAC) . 5 3.1 Object . 5 3.2 Sample . 5 OPGW testing 5 3.2.1OPAC testing . 6 3.2.23.3 Apparatus . 6 3.4 Procedure . 7 OPGW testing 7 3.4.1OPAC testing . 7 3.4.2Common procedure for
23、OPGW and OPAC . 8 3.4.33.5 Requirements . 8 3.6 Details to be specified . 8 OPGW testing 8 3.6.1OPAC testing . 8 3.6.24 Method H2: Lightning test method for optical aerial cables along electric power lines (OPGW and OPAC) . 8 4.1 Object . 8 4.2 General . 9 4.3 Sample . 9 4.4 Apparatus . 9 4.5 Proced
24、ure . 10 4.6 Requirements . 10 4.7 Details to be specified . 10 5 Method H3 Electrical continuity test of cable metallic elements . 10 5.1 Object . 10 5.2 Sample . 10 5.3 Apparatus . 10 5.4 Procedure . 11 5.5 Requirements . 11 5.6 Details to be specified . 11 Bibliography 12 Figure 1 OPGW short-circ
25、uit test arrangement . 6 Figure 2 OPAC short-circuit test arrangement 7 Figure 3 Lightning test arrangement . 9 Table 1 Test parameters 10 BS EN 60794-1-24:2014IEC 60794-1-24:2014 IEC 2014 5 OPTICAL FIBRE CABLES Part 1-24: Generic specification Basic optical cable test procedures Electrical test met
26、hods 1 Scope This part of IEC 60794 applies to optical fibre cables for use with telecommunication equipment and devices employing similar techniques, and to cables having a combination of both optical fibres and electrical conductors. The object of this standard is to define test procedures to be u
27、sed in establishing uniform requirements for electrical requirements. Throughout the standard the wording “optical cable” may also include optical fibre units, microduct fibre units, etc. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document
28、 and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. Void. 3 Method H1: Short-circuit test (for OPGW and OPAC) 3.1 Object The short-circuit test is i
29、ntended to assess the performance of the OPGW (optical ground wire) under typical short-circuit, or the impact on the performance of OPAC (optical attached cable) under short-circuit current on the messenger wire. 3.2 Sample OPGW testing 3.2.13.2.1.1 Two samples test method A typical arrangement usi
30、ng two test samples is shown in Figure 1. Two samples, each being at least 10 m long, shall be terminated at each end with suitable fittings. In sample A, one or more thermocouples shall be inserted into holes drilled into the optical unit to monitor the optical unit temperature. In sample B, one or
31、 more thermocouples shall be attached to the wires of the OPGW to monitor the OPGW temperature. Fibre optical attenuation shall be measured using a light source and power meter connected to each end of the test fibre of sample B. The test length of the optical fibre shall be a minimum of 100 m (when
32、 the sample is shorter than 100 m, concatenation shall be used) . BS EN 60794-1-24:2014IEC 60794-1-24:2014 IEC 2014 5 OPTICAL FIBRE CABLES Part 1-24: Generic specification Basic optical cable test procedures Electrical test methods 1 Scope This part of IEC 60794 applies to optical fibre cables for u
33、se with telecommunication equipment and devices employing similar techniques, and to cables having a combination of both optical fibres and electrical conductors. The object of this standard is to define test procedures to be used in establishing uniform requirements for electrical requirements. Thr
34、oughout the standard the wording “optical cable” may also include optical fibre units, microduct fibre units, etc. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only th
35、e edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. Void. 3 Method H1: Short-circuit test (for OPGW and OPAC) 3.1 Object The short-circuit test is intended to assess the performance of the OPGW (optical ground wire) under
36、 typical short-circuit, or the impact on the performance of OPAC (optical attached cable) under short-circuit current on the messenger wire. 3.2 Sample OPGW testing 3.2.13.2.1.1 Two samples test method A typical arrangement using two test samples is shown in Figure 1. Two samples, each being at leas
37、t 10 m long, shall be terminated at each end with suitable fittings. In sample A, one or more thermocouples shall be inserted into holes drilled into the optical unit to monitor the optical unit temperature. In sample B, one or more thermocouples shall be attached to the wires of the OPGW to monitor
38、 the OPGW temperature. Fibre optical attenuation shall be measured using a light source and power meter connected to each end of the test fibre of sample B. The test length of the optical fibre shall be a minimum of 100 m (when the sample is shorter than 100 m, concatenation shall be used) . BS EN 6
39、0794-1-24:2014 6 IEC 60794-1-24:2014 IEC 2014 3.2.1.2 One sample test method The sample, at least 10 m long, shall be terminated at each end with suitable fittings. One or more thermocouples shall be inserted through the strands of the OPGW onto the surface of the optical unit to monitor the optical
40、 unit temperature. One or more thermocouples shall be attached to the wires of the OPGW to monitor the OPGW temperature. Fibre optical attenuation shall be measured using a light source and power meter connected to each end of the test fibre. The test length of the optical fibre shall be a minimum o
41、f 100 m. (when the sample is shorter than 100 m, concatenation shall be used). OPAC testing 3.2.2A typical arrangement for testing OPAC is shown in Figure 2. The OPAC test sample, at least 10 m long, is attached to the agreed messenger wire with suitable fittings. Thermocouples shall be attached to
42、the messenger wire to record the temperature achieved during the test. In addition, a light source and power meter shall be connected to each end of the test fibre in the OPAC to measure the relative attenuation level. The test length of optical fibre shall be a minimum of 100 m (when the sample is
43、shorter than 100 m, concatenation shall be used). 3.3 Apparatus Key 1 thermocouples - armour temperature is measured - optical core temperature is measured 2 thermocouple recorder 3 light source 4 power meter 5 recorder 6 fibre looped A, B test samples Figure 1 OPGW short-circuit test arrangement IE
44、C 1563/14 A B 1 2 3 4 6 5 BS EN 60794-1-24:2014IEC 60794-1-24:2014 IEC 2014 7 Key 1 thermocouple - messenger temperature is measured 2 thermocouple recorder 3 light source 4 power meter 5 recorder 6 fibre looped A attached cable B messenger Figure 2 OPAC short-circuit test arrangement 3.4 Procedure
45、OPGW testing 3.4.1The general test conditions are as follows: Tensile load: 15 % 5 % of RTS (rated tensile strength) Sample length: 10 m Fibre test length: 100 m Initial sample temperature: as agreed between customer and supplier Fault current intensity: as agreed between customer and supplier Fault
46、 current duration: as agreed between customer and supplier Number of pulses: 3 minimum Waveform: to be symmetrical after the 3rdcycle The current pulses shall be applied with the metallic cables being allowed to cool down to within 5 C of the initial temperature between each pulse. Optical attenuati
47、on of the test fibres shall be monitored continuously for at least 2 min before, until at least 5 min after each current pulse. The temperature of the OPGW and the optical unit shall be monitored. OPAC testing 3.4.2The general test conditions are as follows: Tensile load: agreed between customer and
48、 supplier Sample length: 10 m Fibre test length: 100 m Initial sample temperature: as agreed between customer and supplier Messenger maximum temperature: refer to the detail specification IEC 1564/14 B 1 2 3 4 5 6 A BS EN 60794-1-24:2014IEC 60794-1-24:2014 IEC 2014 7 Key 1 thermocouple - messenger t
49、emperature is measured 2 thermocouple recorder 3 light source 4 power meter 5 recorder 6 fibre looped A attached cable B messenger Figure 2 OPAC short-circuit test arrangement 3.4 Procedure OPGW testing 3.4.1The general test conditions are as follows: Tensile load: 15 % 5 % of RTS (rated tensile strength) Sample length: 10 m Fibre test length: 100 m Initial sample temperature: as agreed between customer and supplier Fault c
