1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 50441-2:2012Cables for indoor residentialtelecommunicationinstallations -Part 2: Screened cables Grade 1BS EN 50441-2:2012 BRITISH STANDARDNational forewordThis British Sta
2、ndard is the UK implementation of EN 50441-2:2012.It supersedes BS EN 50441-2:2006 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee EPL/46, Cables, wires and waveguides, radio frequencyconnectors and accessories for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 list of
3、 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 StandardsLimited
4、2012ISBN 978 0 580 70378 2ICS 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 EN 504
5、41-2:2012EUROPEAN STANDARD EN 50441-2 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 Brussels 201
6、2 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50441-2:2012 E ICS 33.120.10 Supersedes EN 50441-2:2006English version Cables for indoor residential telecommunication installations - Part 2: Screened cables - Grade 1 Cbles pour
7、les installations rsidentielles de tlcommunications en intrieur - Partie 2: Cbles crants - Classe 1 Innenkabel fr Telekommunikationseinrichtungen im Wohnbereich - Teil 2: Geschirmte Innenkabel - Klasse 1 This European Standard was approved by CENELEC on 2012-01-23. CENELEC members are bound to compl
8、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 CEN-CENELEC
9、Management Centre 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 CEN-CENELEC Management Centre has
10、 the same status as 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
11、Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 50441-2:2012EN 50441-2:2012 2 Contents Foreword . 3 1 Scope . 42 Normative references . 43 Quality control . 54 Cable construction . 54.1 Conductors . 54.2 Insulation
12、54.3 Cable element 64.4 Screening of the cable element 64.5 Cabling 64.6 Spare pairs . 64.7 Colour code 64.8 Screening and wrapping of the core . 64.9 Sheath 64.10 Ripcord . 64.11 Overall diameter . 64.12 Identification . 74.13 Delivery length 75 Mechanical requirements . 85.1 Conductor . 85.2 Insul
13、ation 85.3 Sheath 85.4 Finished cable 86 Environmental and climatic requirements .106.1 Insulation 106.2 Sheath 106.3 Fire behaviour .107 Electrical requirements 117.1 General .117.2 Conductor resistance 117.3 Dielectric strength .117.4 High frequency characteristics .117.5 Electromagnetic behaviour
14、 .147.6 Unbalance attenuation 147.7 Environmental and safety aspects .14Bibliography 15Figures Figure 1 Test fixture 9Figure 2 Installation test system . 10Tables Table 1 Recommended outer diameter of the sheath 7Table 2 Cable impedance. 11Table 3 Return loss measurement . 12Table 4 Maximum cable at
15、tenuation 12Table 5 Minimum NEXT and PSNEXT . 13Table 6 Minimum ELFEXT and PSELFEXT . 13BS EN 50441-2:2012 3 EN 50441-2:2012 Foreword This document (EN 50441-2:2012) has been prepared by SC 46XC, “Multicore, multipair and quad data communication cables“, of CLC/TC 46X, “Communication cables“. The fo
16、llowing 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 conflicting with this document have to be withdrawn (dow) 2015-01-23 Thi
17、s document supersedes EN 50441-2:2006. 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 covers the Principle Elements of
18、the Safety Objectives for Electrical Equipment Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC). _ BS EN 50441-2:2012EN 50441-2:2012 4 1 Scope This European Standard specifies the constructional details and performance requirements for cables for indoor Residential Cabling Systems c
19、haracterized up to 100 MHz. Cables in this European Standard are based on the common design rules specified in EN 50290-2-1 and are specifically intended for supporting ICT and BCT applications (telephone, computer and TV services) as specified in EN 50173-4. The cables covered in this European Stan
20、dard are intended to operate with voltages and currents normally encountered in communication systems. These cables are not intended to be used in conjunction with low impedance sources, for example, the electrical power supply of public utility mains. Cables covered in this European Standard may ho
21、wever be subjected to voltages of not more than 300 V a.c. or 450 V d.c and comply with the requirements of the Low Voltage Directive. The maximum current rating per conductor is 3 A/mm unless otherwise specified in the relevant detail specification. 2 Normative references The following documents, i
22、n 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 latest edition of the referenced document (including any amendments) applies. EN 50173-1 Information technology
23、 Generic cabling systems - Part 1: General requirements EN 50289-1-2 Communication cables Specifications for test methods - Part 1-2: Electrical test methods DC resistance EN 50289-1-3 Communication cables Specifications for test methods Part 1-3: Electrical test methods Dielectric strength EN 50289
24、-1-4 Communication cables Specifications for test methods Part 1-4: Electrical test methods Insulation resistance EN 50289-1-6 Communication cables Specifications for test methods Part 1-6: Electrical test methods Electromagnetic performance EN 50289-1-7 Communication cables Specifications for test
25、methods Part 1-7: Electrical test methods Velocity of propagation EN 50289-1-8 Communication cables Specifications for test methods Part 1-8: Electrical test methods Attenuation EN 50289-1-9 Communication cables Specifications for test methods Part 1-9: Electrical test methods Unbalance attenuation
26、(longitudinal conversion loss, longitudinal conversion transfer loss) EN 50289-1-10 Communication cables Specifications for test methods Part 1-10: Electrical test methods Crosstalk EN 50289-1-11 Communication cables Specifications for test methods Part 1-11: Electrical test methods Characteristic i
27、mpedance, input impedance, return loss EN 50289-3-7 Communication cables Specifications for test methods Part 3-7: Mechanical test methods Abrasion resistance of the cable sheath EN 50289-3-9:2001 Communication cables Specifications for test methods Part 3-9: Mechanical test methods Bending tests EN
28、 50289-3-17 Communication cables Specifications for test methods Part 3-17: Mechanical test methods Adhesion of dielectric and sheath BS EN 50441-2:2012 5 EN 50441-2:2012 EN 50290-2-1 Communication cables Part 2-1: Common design rules and construction EN 50290-2-22 Communication cables Part 2-22: Co
29、mmon design rules and construction PVC sheathing compounds EN 50290-2-23 Communication cables Part 2-23: Common design rules and construction PE insulation EN 50290-2-27 Communication cables Part 2-27: Common design rules and construction Halogen free flame retardant thermoplastic sheathing compound
30、s EN 60332-1-2 Tests on electric and optical fibre cables under fire conditions Part 1-2: Test for vertical flame propagation for a single insulated wire or cable Procedure for 1 kW pre-mixed flame (IEC 60332-1-2) EN 60794-1-2 Optical fibre cables Part 1-2: Generic specification Basic optical cable
31、test procedures (IEC 60794-1-2) EN 60811-1-1 Insulating and sheathing materials of electric and optical cables Common test methods Part 1-1: General application Measurement of thickness and overall dimensions Tests for determining the mechanical properties (IEC 60811-1-1) HD 402 S2:1984 Standard col
32、ours for insulation for low-frequency cables and wires (IEC 60304:1982) 3 Quality control Not applicable. 4 Cable construction 4.1 Conductors 4.1.1 Conductor construction Conductor construction shall be in accordance with EN 50290-2-1. NOTE Constructions with Copper Clad conductors do not meet the r
33、equirements. 4.1.2 Conductor type The conductor shall be a solid wire of annealed copper with a minimum diameter of 0,5 mm in accordance with EN 50290-2-1. NOTE Diameters 0,65 mm may cause problems with connecting hardware. Diameters larger than 0,8 mm could cause connectorisation problems. 4.2 Insu
34、lation 4.2.1 Insulation material The insulation shall be polyethylene in accordance with EN 50290-2-23. Other materials may be used providing that they do not affect compliance with this European Standard and any local regulations (e.g. Environmental Directives). 4.2.2 Thickness of the insulation Th
35、e thickness of the insulation shall be compatible with the electrical requirements specified in Clause 7. 4.2.3 Colour of the insulated conductor The colour of insulation shall be a reasonable match to HD 402 S2:1984. BS EN 50441-2:2012EN 50441-2:2012 6 4.3 Cable element The cable element shall be a
36、 pair or a quad. The lay length shall be in accordance with EN 50290-2-1. 4.4 Screening of the cable element Not specified but might be required to meet local regulation for EMC performance. 4.5 Cabling The cables shall have at least 4 pairs or 2 quads. The core of the cable shall comply with the re
37、quirements specified in 7.4 and 7.5. 4.6 Spare pairs Not applicable. 4.7 Colour code The colour code shall be given in the detail specification. It should take into account the local practices as well as international recognised codes. The colours shall be easily identifiable. 4.8 Screening and wrap
38、ping of the core 4.8.1 Core wrapping The cable core shall be wrapped with one or more non-hydroscopic synthetic tapes. The synthetic tape shall be applied helically or longitudinally with an overlap of a minimum of 10 %. 4.8.2 Screen The cable core shall be screened in accordance with EN 50290-2-1.
39、Where a braid is applied, the minimum coverage (mainly for mechanical reasons) shall be 60 %. Where the screen is a metallised foil and a braid, this minimum coverage shall be 30 %. The method of calculating the coverage is described in EN 50290-2-1. 4.9 Sheath 4.9.1 Sheath material The sheath shall
40、 be of a thermoplastic compound according to EN 50290-2-27 or EN 50290-2-22. 4.9.2 Sheath construction Unless otherwise specified, the colour of sheath shall be cream. The sheath shall be applied to fit closely to the core of the cable but, it shall be possible to strip the cable over 20 cm without
41、removing foils or damaging conductors. The sheath shall be cylindrical and its external aspect shall not reveal the core profile. The ovality of the finished cable shall be not greater than 0,16. 4.9.3 Thickness of the sheath The minimum thickness of the sheath shall be equal to or greater than 0,5
42、mm when measured in accordance with EN 60811-1-1. 4.10 Ripcord A ripcord shall be laid under the sheath. 4.11 Overall diameter For installation practices and connectorisation the recommended outer diameter is given in Table 1. BS EN 50441-2:2012 7 EN 50441-2:2012 Table 1 Recommended outer diameter o
43、f the sheath Number of pairs Maximum outer diameter Minimum thickness of the sheath mm mm4 6,8 0,50NOTE In case of installation by stapling other diameters may be required (see 5.4.7.3). 4.12 Identification 4.12.1 General Identification shall be provided either by sheath marking or by identification
44、 thread. 4.12.2 Sheath marking Unless otherwise specified by the customer the cable may be marked as follows. Sheath marking shall be either by non-degradable print or embossing and shall contain the following minimum information: designation of cable including the numbering of the relevant standard
45、; reaction to fire classification; name of supplier; metric marking. 4.12.3 Identification thread Where a cable is not identified by sheath marking there shall be an alternative means of identification (e.g. identification thread laid under the sheath, identification tape, printing on the core wrapp
46、ing, etc.). Identification shall contain the following minimum information: designation of cable including the numbering of the relevant standard; reaction to fire classification; name of supplier. 4.13 Delivery length 4.13.1 Labelling Unless otherwise specified in the detail specification drums or
47、coils shall be provided with a label with a non-degradable print containing the following minimum information: designation of cable including the numbering of the relevant standard; reaction to fire classification name of supplier; batch part number; length of cable. EXAMPLE EN 50XXX Class C 03/00 5
48、43 m. BS EN 50441-2:2012EN 50441-2:2012 8 4.13.2 End caps The ends of the delivery length of cable shall be adequately capped to avoid water ingress. 5 Mechanical requirements 5.1 Conductor The conductor shall be in accordance with EN 50290-2-1. 5.2 Insulation The insulation shall be in accordance with EN 50290-2-1. 5.3 Sheath The sheath shall be in accordance with EN 50290-2-27 or EN 50290-2-22. 5.4 Finished cable 5.4.1 Sheath integrity Sheath integrity shall be checked during manufacturing by spark test in accordan
