1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 50288-8:2012Multi-element metallic cables used in analogue and digital communication and control Part 8: Specification for type 1 cables characterised up to 2 MHzBS EN 5028
2、8-8:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 50288-8:2012.The UK participation in its preparation was entrusted to TechnicalCommittee EPL/46, Cables, wires and waveguides, radio frequencyconnectors and accessories for communication and signalling.A l
3、ist of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLi
4、mited 2012ISBN 978 0 580 58964 5ICS 33.120.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2012.Amendments issued since publicationDate Text affectedBS
5、EN 50288-8:2012EUROPEAN STANDARD EN 50288-8 NORME EUROPENNE EUROPISCHE NORM March 2012 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brusse
6、ls 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50288-8:2012 E ICS 33.120.10 English version Multi-element metallic cables used in analogue and digital communication and control - Part 8: Specification for type 1 cables ch
7、aracterised up to 2 MHz Cbles mtalliques lments multiples utiliss pour les transmissions et les commandes analogiques et numriques - Partie 8: Spcification pour les cbles de type 1 pour applications jusqu 2 MHz Mehradrige metallische Daten- und Kontrollkabel fr analoge und digitale bertragung - Teil
8、 8: Spezifikation fr Typ 1 Kabel bis 2 MHz This European Standard was approved by CENELEC on 2012-01-23. 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 altera
9、tion. 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 European Standard exists in three official versions (English, French, German). A version in any other language m
10、ade 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. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech
11、 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, Turkey and the United Kingdom. BS EN 50288-8:2012EN 50288-8:2012
12、- 2 - Contents Foreword 3 1 SCOPE . 4 2 NORMATIVE REFERENCES 4 3 TERMS, DEFINITIONS, SYMBOLS AND ABBREVIATIONS . 5 4 CABLE CONSTRUCTION . 5 4.1 CONDUCTOR 5 4.2 INSULATION 5 4.3 CABLING ELEMENTS . 5 4.4 IDENTIFICATION OF CABLING ELEMENTS. 5 4.5 SCREENING OF CABLING ELEMENTS 5 4.6 CABLE MAKE-UP 5 4.7
13、FILLING COMPOUND . 5 4.8 INTERSTITIAL FILLERS . 6 4.9 SCREENING OF THE CABLE CORE 6 4.10 MOISTURE BARRIERS . 6 4.11 WRAPPING LAYERS 6 4.12 SHEATH . 6 5 TEST METHODS AND REQUIREMENTS FOR COMPLETED CABLES 6 5.1 GENERAL . 6 5.2 ELECTRICAL TESTS 6 5.2.1 Low-frequency and d.c. electrical measurements . 6
14、 5.2.2 High-frequency electrical and transmission measurements 7 5.3 MECHANICAL TESTS . 8 5.4 ENVIRONMENTAL TESTS . 8 5.5 FIRE PERFORMANCE TEST METHODS . 8 BS EN 50288-8:2012- 3 - EN 50288-8:2012 Foreword This document (EN 50288-8:2012) has been prepared by SC 46XC, “Multicore, multipair and quad da
15、ta communication cables“, of CLC/TC 46X, “Communication cables“. The following dates are fixed: latest date by which this document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2013-01-23 latest date by which the national standards c
16、onflicting with this document have to be withdrawn (dow) 2015-01-23 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 identifying any or all such patent rights. This standard cove
17、rs the Principle Elements of the Safety Objectives for Electrical Equipment Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC). _ BS EN 50288-8:2012EN 50288-8:2012 - 4 - 1 Scope This European Standard defines 1 to 7 multi-pair cables for use in analogue, digital telecommunication netw
18、orks and control with their relative definitions and requirements. It covers indoor cables, characterised up to 2 MHz, to be used in Small Office Home Office (SOHO) type 1 cable application. The electrical, mechanical, transmission and environmental performance characteristics of the screened cables
19、, related to their reference test methods, are detailed. 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 the edition cited applies. For undated references, the lates
20、t edition of the referenced document (including any amendments) applies. EN 50090-2-2:1996, Home and Building Electronic Systems (HBES) Part 2-2: System overview General technical requirements EN 50288-1:2003, Multi-element metallic cables used in analogue and digital communication and control Part
21、1: Generic specification EN 50289-1-4, Communication cables Specifications for test methods Part 1-4: Electrical test methods Insulation resistance EN 50289-3-2, Communication cables Specifications for test methods Part 3-2: Mechanical test methods Tensile strength and elongation for conductor EN 50
22、289-3-4, Communication cables Specifications for test methods Part 3-4: Mechanical test methods Tensile strength, elongation and shrinkage of insulation and sheath EN 50289-3-5, Communication cables Specifications for test methods Part 3-5: Mechanical test methods Crush resistance of the cable EN 50
23、289-3-6, Communication cables Specifications for test methods Part 3-6: Mechanical test methods Impact resistance of the cable EN 50289-3-8, Communication cables Specifications for test methods Part 3-8: Mechanical test methods Abrasion resistance of cable sheath markings EN 50289-3-9, Communication
24、 cables Specifications for test methods Part 3-9: Mechanical test methods Bending tests EN 50289-3-16, Communication cables Specifications for test methods Part 3-16: Mechanical test methods Cable tensile performance EN 50289-4-6, Communication cables Specifications for test methods Part 4-6: Enviro
25、nmental test methods Temperature cycling EN 50290-2 Series, Communication cables EN 50290-2-23, Communication cables Part 2-23: Common design rules and construction PE insulation EN 50290-2-28, Communication cables Part 2-28: Common design rules and construction Filling compounds for filled cables B
26、S EN 50288-8:2012- 5 - EN 50288-8:2012 EN 60708, Low-frequency cables with polyolefin insulation and moisture barrier polyolefin sheath (IEC 60708) IEC 60189-2, Low-frequency cables and wires with PVC insulation and PVC sheath Part 2: Cables in pairs, triples, quads and quintuples for inside install
27、ations IEC/TR 60344, Calculation of d.c. resistance of plain and coated copper conductors of low-frequency cables and wires Application guide 3 Terms, definitions, symbols and abbreviations For the purposes of this document, the terms and definitions given in EN 50288-1:2003, Clause 3, apply. 4 Cabl
28、e construction 4.1 Conductor The conductor shall be solid copper and meet the requirements of EN 50288-1:2003, 4.1. The conductor shall be plain or metal coated. The nominal conductor diameter shall be between 0,4 mm and 0,8 mm. NOTE Constructions with Copper Clad conductors do not meet the requirem
29、ents. 4.2 Insulation Conductor insulation shall be composed of solid, cellular or composite (e.g. foam skin) polyolefin according to the appropriate part of EN 50290-2-23. 4.3 Cabling elements The cable element shall be a pair. The number of twist per meter shall be at least 5. 4.4 Identification of
30、 cabling elements Unless otherwise specified, the colour coding for identification is given in IEC 60189-2 or EN 60708, as appropriate. The colours shall meet the requirements of EN 50288-1:2003, 4.4. 4.5 Screening of cabling elements Where appropriate, screening of the cabling elements shall be app
31、lied in accordance with EN 50288-1:2003, 4.5. When a braid is used the minimum braid coverage (for mechanical purposes) shall be 60 %. When a foil and braid are used the minimum braid coverage (for mechanical purposes) shall be 30 %. Coverage is defined in EN 50290-1-2. 4.6 Cable make-up The cable e
32、lements shall be laid up in concentric layer(s) or units to form the cable core. The number of cores shall be 1 to 7 twisted pairs. 4.7 Filling compound When required the interstices of the cable core shall be filled continuously with a compound suitable to prevent water penetration within the cable
33、. The filling compound shall meet the requirements specified in EN 50290-2-28. BS EN 50288-8:2012EN 50288-8:2012 - 6 - 4.8 Interstitial fillers Where fillers are used they shall meet the requirements of EN 50288-1:2003, 4.8. 4.9 Screening of the cable core The cable core shall be screened. The scree
34、n may consist of the following: - an aluminium tape laminated to a plastic tape and a metallic drain wire whereby the metal tape is in contact with the drain wire; - a protective wrapping may be applied under or/and over the screen; - the drain wire diameter shall be at least 0,4 mm. 4.10 Moisture b
35、arriers Not applicable. 4.11 Wrapping layers Where wrapping layers are used they shall be in accordance with EN 50288-1:2003, 4.11. 4.12 Sheath The sheath shall be of a suitable material according to the appropriate part of EN 50290-2. 5 Test methods and requirements for completed cables 5.1 General
36、 The following tables give the tests to be applied, together with the respective limits, in order to demonstrate compliance with this specification. 5.2 Electrical tests 5.2.1 Low-frequency and d.c. electrical measurements Telecommunication wires and cables may carry low frequency (under 100 Hz) or
37、dc electrical power under the following simultaneous requirements: Table 1 Parameter Unit Requirement Maximum voltage V 300 Maximum current density A/mm 3 Maximum short circuit energy density W/mm 350 Maximum service energy density W/mm 100 Maximum element temperature in service C 70 BS EN 50288-8:2
38、012- 7 - EN 50288-8:2012 Table 2 EN 50288-1:2003 Clause no. Parameter Requirement 5.1.1.1 Conductor loop resistance The maximum value shall be calculated in accordance with IEC/TR 60344 and shall be 180 /km for 0,5 mm wire diameter, 74 /km for 0,8 mm wire diameter. 5.1.1.2 Conductor resistance unbal
39、ance 2 % 5.1.1.3 Dielectric strength - conductor/conductor and conductor/screen EN 50090-2-2:1996, Clause 5. 2,5 kV a.c 50 Hz / 5 min or 4 kV a.c 50 Hz / 1 min 5.1.1.4 Insulation resistance 500 M km using 100 V 500 V test voltage5.1.1.5 Mutual capacitance 800 Hz, 20 C 100 nF/km 5.1.1.6 Capacitance u
40、nbalance to earth 1 600 pF/km5.2.2 High-frequency electrical and transmission measurements Table 3 EN 50288-1:2003 Clause no. Parameter Requirement 5.1.2.1.2 Propagation Delay Not applicable 5.1.2.2 Propagation delay difference (skew) Not applicable 5.1.2.3 Attenuation For 0,5 mm wire diameter Value
41、s above 2 000 kHz are for information only. For 0,8 mm wire diameter Values above 2 000 kHz are for information only. 5.1.2.4 Near End Unbalance Attenuation Not applicable 5.1.2.5 Near-end crosstalk a(NEXT) 135-15logf 1 KHz f 25 000 KHz (f in KHz) Values above 2 000 kHz are for information only. Val
42、ues below 70 dB shall revert to a requirement of 70 dB maximum.5.1.2.7.1 Power sum Near-end Crosstalk(PSNEXT) Not applicable 5.1.2.7.2 Equal Level Far-end crosstalk(ELFEXT) Not applicable 5.1.2.7.3 Power Sum Equal Level Far-end crosstalk(PSELFEXT) Not applicable 5.1.2.8 Characteristic impedance 70 Z
43、c 100 1 000 kHz 5.1.2.9 Return loss Not applicable 5.1.2.10 Coupling attenuation Not applicable 5.1.2.11 Transfer impedance Not applicable 5.1.2.12 Screening attenuation 35 dB, 30 f 100 MHz 35 - 20 log (f/100) dB, 100 f 1 000 MHz f = Frequency in kHz. a The values in the table are for information on
44、ly. The formula given shall be used to determine compliance. Value under 70 dB are for information only. 50 300 1 000 2 000 5 000 kHz 9,3 18,0 30,5 42,1 65,2 dB/Km 50 300 1 000 2 000 5 000 kHz 6,2 12,0 20,4 28,2 43,8 dB/Km 50 300 1 000 2 000 5 000 kHz 109,5 52,8 45,0 40,5 34,5 dB/Km BS EN 50288-8:20
45、12EN 50288-8:2012 - 8 - 5.3 Mechanical tests Table 4 EN 50288-1:2003 Clause no. Parameter Requirement 5.2.1 Conductor elongation at break EN 50289-3-2 10 % 5.2.2 Shrinkage of insulation EN 50289-3-4 5 % for 1 h at (100 2) C 5.2.3 Crush resistance of the cable EN 50289-3-5 1 000 N/1 min/500 mm Any ch
46、ange in the transmission characteristics at 1 MHz shall remain within the specified limits 5.2.4 Impact resistance of the cable EN 50289-3-6 12,5 mm radius/1J/3 impacts Any change in the transmission characteristics at 1 MHz shall remain within the specified limits 5.2.5 Abrasion resistance of the s
47、heath markings EN 50289-3-8 Markings shall remain legible 5.2.6 Simulated installation testing of the cable Not applicable 5.2.7 Tensile performance EN 50289-3-16 combined with 5.2.6 Pulling force 50 N/mm2of conductor Any change in the transmission characteristics at 1 MHz shall remain within the sp
48、ecified limits 5.4 Environmental tests Table 5 EN 50288-1:2003 Clause no. Parameter Requirement 5.3.1 Cold bend performance of the cable EN 50289-3-9 Mandrel diaX8/No of turns4/Temp -20 C 2 CNo cracks when examined visually without magnification 5.3.2 Temperature Cycling EN 50289-4-6 After allowing
49、the sample to return to ambient temperature the insulation resistance shall be tested in accordance with EN 50289-1-4. When subjected to a (100-500) V test voltage the insulation resistance shall be 500 M km 5.5 Fire performance test methods Indoor cables fall under the requirements of the Construction Products Directive (CPD) for reaction to fire. Appropriate requirements are under consideration. BS EN 50288-8:2012- 9 - EN
