1、BRITISH STANDARDBS EN 50441-3:2006Cables for indoor residential telecommunication installations Part 3: Screened cables Grade 3The European Standard EN 50144-3:2006 has the status of a British StandardICS 33.120.10g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54
2、g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 50441-3:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 September 2006 BSI 2006ISBN 0 580 49120 XNational forewordT
3、his British Standard was published by BSI. It is the UK implementation of EN 50441-3:2006.The UK participation in its preparation was entrusted to Technical Committee EPL/46, Cables, wires and waveguides, radio frequency connectors and accessories for communication and signalling. A list of organiza
4、tions represented on EPL/46 can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendmen
5、ts issued since publicationAmd. No. Date CommentsEUROPEAN STANDARD EN 50441-3 NORME EUROPENNE EUROPISCHE NORM June 2006 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat
6、: rue de Stassart 35, B - 1050 Brussels 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50441-3:2006 E ICS 33.120.10 English version Cables for indoor residential telecommunication installations Part 3: Screened cables - Grad
7、e 3 Cbles pour les installations rsidentielles de tlcommunications en intrieur Partie 3: Cbles crants - Classe 3 Innenkabel fr Telekommunikationseinrichtungen im Wohnbereich Teil 3: Geschirmte Innenkabel - Klasse 3 This European Standard was approved by CENELEC on 2005-12-06. CENELEC members are bou
8、nd 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 alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the C
9、entral Secretariat 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
10、 status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
11、 Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 50441-3:2006 - 2 - Foreword This European Standard was prepared by SC 46XC, Multicore, Multipair and Quad Data communication cables, of Technical Committee CENELEC TC 46X, Communication cables. The text of
12、the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 50441-3 on 2005-12-06. 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 endorsement (dop) 2007-01-01
13、latest date by which the national standards conflicting with the EN have to be withdrawn (dow)2009-01-01 _ - 3 - EN 50441-3:2006 Contents 1 Scope 5 2 Normative references 5 3 Quality control 6 4 Cable construction 7 4.1 Conductors. 7 4.1.1 Conductor construction. 7 4.1.2 Conductor Type . 7 4.2 Insul
14、ation . 7 4.2.1 Insulation material 7 4.2.2 Thickness of the insulation 7 4.2.3 Colour of the insulated conductor 7 4.3 Cable element 7 4.4 Screening of the cable element 7 4.5 Cabling 7 4.6 Spare pairs 8 4.7 Colour code 8 4.8 Screening and wrapping of the core . 8 4.8.1 Core wrapping . 8 4.8.2 Scre
15、en 8 4.9 Sheath. 8 4.9.1 Sheath material 8 4.9.2 Sheath construction 8 4.9.3 Thickness of the sheath 8 4.10 Ripcord 9 4.11 Overall diameter . 9 4.12 Identification. 9 4.12.1 Sheath marking 9 4.12.2 Identification thread 9 4.13 Delivery length 10 4.13.1 Labelling 10 4.13.2 End caps. 10 5 Mechanical r
16、equirements. 10 5.1 Conductor 10 5.2 Insulation . 10 5.3 Sheath. 10 5.4 Finished cable 10 5.4.1 Sheath integrity 10 5.4.2 Static bending radius 10 5.4.3 Abrasion resistance of the sheath 11 5.4.4 Kink test 11 5.4.5 Cut-through test . 11 5.4.6 Adhesion of the sheath . 11 EN 50441-3:2006 - 4 - 5.4.7 I
17、nstallation capability. . 11 6 Environmental and climatic requirements 14 6.1 Insulation . 14 6.2 Sheath. 14 6.3 Fire behaviour 14 7 Electrical requirements 14 7.1 Conductor resistance 14 7.2 Dielectric strength. 14 7.3 Insulation resistance . 14 7.4 High frequency characteristics . 14 7.4.1 Impedan
18、ce. 15 7.4.2 Return loss 15 7.4.3 Attenuation 15 7.4.4 Crosstalk. 16 7.5 Electromagnetic behaviour 16 7.5.1 Transfer impedance 16 7.5.2 Coupling attenuation. 17 7.6 Unbalance attenuation 17 7.7 Environmental and safety aspects 17 Figure 1 - Test fixture12 Figure 2 - Installation test system 13 Table
19、 1 - Cable impedance15 Table 2 - Minimum NEXT 16 - 5 - EN 50441-3:2006 1 Scope These cables are for installation in indoor Residential Cabling Systems. They are specified up to 1 000 MHz. Their design is based on the requirements of the EN 50290-2-1. They are specifically designed for cabling in res
20、idential environment supporting ICT and BCT applications. (Telephone, Computer and TV services). This specification defines the constructional details as well as the specific performances of the cables. Unless otherwise specified, all cables covered by this standard may be subjected to voltages not
21、more than 300 V a.c. or 450 V d.c. and shall meet the essential requirements of the low voltage directive. Due to current limitation related to the conductor cross sectional area, they are not intended for direct connection to mains electricity supply. The maximum current rating per conductor is les
22、s than or equal to 3 A/mm unless otherwise specified in the relevant detail specification. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest editio
23、n of the referenced document (including any amendments) applies. Publication Title EN 50265-2-1 Common test methods for cables under fire conditions - Test for resistance to vertical flame propagation for a single insulated conductor or cable Part 2-1: Procedures - 1 kW pre-mixed flame EN 50289-1-2
24、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 50289-1-4 Communication cables - Specifications for test methods Part
25、 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 50289-1-8 Communication cables - Specifications for test methods Part 1-8: Electrical test methods - Attenuatio
26、n 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 impedance, input impedance, return loss EN 50441-3:2006 - 6 -
27、 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 Communication cables - Specifications for test methods Part 3-9: Mechanical test methods - Bending tests EN 50289-3-11 Communication cables - S
28、pecifications for test methods Part 3-11: Mechanical test methods - Cable cut-through resistance EN 50289-3-17 Communication cables - Specifications for test methods Part 3-17:Mechanical test methods - Adhesion of dielectric and sheath EN 50290-2-1 Communication cables Part 2-1: Common design rules
29、and construction EN 50290-2-22 Communication cables Part 2-22: Common 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 const
30、ruction - Halogen free flame retardant thermoplastic sheathing compounds EN 50290-3 1)Communication cables Part 3: Quality assessment EN 60794-1-2 Optical fibre cables Part 1-2: Generic specification Basic optical cable test procedures (IEC 60794-1-2) EN 60811-1-1 Insulating and sheathing materials
31、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 Standard colours for insulation for low-frequency cables and wires (IEC 60304) 3 Quality cont
32、rol According to EN 50290-3. 1)under consideration - 7 - EN 50441-3:2006 4 Cable construction 4.1 Conductors 4.1.1 Conductor construction According to 4.1 of EN 50290-2-1. 4.1.2 Conductor Type According to clause 4.1.1 of EN 50290-2-1, the conductor is a solid wire of annealed copper with a minimum
33、diameter of 0,5 mm (diameters larger than 0,8 mm could cause connectorisation problems). NOTE Diameter 0,65 mm may cause problems with connecting hardware. 4.2 Insulation 4.2.1 Insulation material The insulation of the conductor shall be polyethylene in accordance with EN 50290-2-23. Other relevant
34、materials may be used providing that they would not affect the compliance of the cable against local regulations (e.g. Environmental Directives). 4.2.2 Thickness of the insulation The thickness of the insulation shall be compatible with the electrical requirements as defined in Clause 7. 4.2.3 Colou
35、r of the insulated conductor The colour of insulation should be a reasonable match to HD 402 S2. 4.3 Cable element The cable element shall be a pair. The lay length shall be in accordance with EN 50290-2-1. 4.4 Screening of the cable element The pairs are individually screened. Where a braid is laid
36、 down, the minimum coverage (only for mechanical reasons) shall be 60 %. Where the screen is a metallized foil and a braid, this minimum coverage shall be 30 %. The method of calculating the coverage measurement is described in EN 50290-2-1. 4.5 Cabling The cables shall have at least 4 pairs. The co
37、re of the cable shall be such that 7.4 and 7.5 are fulfilled. EN 50441-3:2006 - 8 - 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
38、 be easily identifiable. 4.8 Screening and wrapping of the core 4.8.1 Core wrapping The cable core may 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
39、be screened according to 4.1.1.2 of EN 50290-2-1. Where a braid is applied, the minimum coverage (mainly for mechanical reasons) shall be 60 %. Where the screen is a metallized foil and a braid, this minimum coverage shall be 30 %. The method of calculating the coverage is described in EN 50290-2-1.
40、 4.9 Sheath 4.9.1 Sheath material The sheath shall 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. However it sh
41、all be possible to strip the cable over 20 cm without removing foils or damaging conductors (ffs). 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 th
42、ickness shall be equal to or greater than 0,5 mm when measured according to EN 60811-1-1. - 9 - EN 50441-3:2006 4.10 Ripcord A ripcord should be laid under the sheath. 4.11 Overall diameter For installation practices and connectorisation the following outer diameter (ffs) is recommended : Number of
43、pairs Max OD mm Minimum thickness of the sheath mm 4 9 0,50 NOTE In case of installation by stapling other diameters may be required (see 5.4.7.2). 4.12 Identification Identification shall be provided either by sheath marking or by identification thread. 4.12.1 Sheath marking Unless otherwise specif
44、ied by the customer, the cable may be marked . Sheath marking shall be in accordance with a non-degradable print or embossing containing the following minimum information: designation of cable including the numbering of the relevant standard reaction to fire classification (under the CPD) (ffs); nam
45、e of supplier metric marking. 4.12.2 Identification thread In case the cable is not identified by sheath marking, there shall be an other means of identification (e.g. identification thread laid under the sheath, identification tape, printing on the core wrapping etc). Identification shall contain t
46、he following minimum information: designation of cable including the numbering of the relevant standard reaction to fire classification (under the CPD) (ffs); name of supplier. EN 50441-3:2006 - 10 - 4.13 Delivery length 4.13.1 Labelling Unless otherwise specified in the detail specification drums o
47、r 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 (under the CPD) (ffs); name of supplier; batch part number; length of cable. EXAMPLE
48、: EN 50XXX - Class C - - 03/00 - 543 m. 4.13.2 End caps The ends of the delivery length of cable shall adequately capped to avoid water ingress. 5 Mechanical requirements 5.1 Conductor According to Clause 4 of EN 50290-2-1. 5.2 Insulation According to Clause 4 of EN 50290-2-1. 5.3 Sheath According t
49、o 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 according to EN 50289-1-3. 5.4.2 Static bending radius The purpose of this test is to demonstrate the ability of the cable to be installed with permanent bending. The test is performed at 2 m from the free end of a 100 m sample. The test method is given in Clause 4 (Procedure 1) of EN 50289-3-9. - 11 - EN 50441-3:2006 The radius of the mandrel shall be five times the nominal ou
