1、BRITISH STANDARDBS EN 61758-1:2008Fibre optic interconnecting devices and passive components Interface standard for closures Part 1: General and guidanceICS 33.180.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53
2、g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 61758-1:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2008 BSI 2008ISBN 978 0 580 54795 9National forewordThis British Standard is the UK implementatio
3、n of EN 61758-1:2008. It is identical to IEC 61758-1:2008.The UK participation in its preparation was entrusted by Technical Committee GEL/86, Fibre optics, to Subcommittee GEL/86/2, Fibre optic interconnecting devices and passive components.A list of organizations represented on this committee can
4、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. Amendments/corrigenda issued since publ
5、icationDate CommentsEUROPEAN STANDARD EN 61758-1 NORME EUROPENNE EUROPISCHE NORM August 2008 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1
6、050 Brussels 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61758-1:2008 E ICS 33.180.20 English version Fibre optic interconnecting devices and passive components - Interface standard for closures - Part 1: General and guid
7、ance (IEC 61758-1:2008) Dispositifs dinterconnexion et composants passifs fibres optiques - Norme dinterface pour botiers - Partie 1: Gnralits et lignes directrices (CEI 61758-1:2008) Lichtwellenleiter - Verbindungselemente und passive Bauteile - Schnittstellennorm fr Muffen - Teil 1: Allgemeines un
8、d Leitfaden (IEC 61758-1:2008) This European Standard was approved by CENELEC on 2008-06-01. 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 alteration. Up-to-
9、date lists and bibliographical references concerning such national standards may be obtained on application to the Central 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 und
10、er the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Fra
11、nce, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Foreword The text of document 86B/2683/FDIS, future edition 1 of IEC 61758-1, prepa
12、red by SC 86B, Fibre optic interconnecting devices and passive components, of IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61758-1 on 2008-06-01. The following dates were fixed: latest date by which the EN has to be implemented at national
13、 level by publication of an identical national standard or by endorsement (dop) 2009-03-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2011-06-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 617
14、58-1:2008 was approved by CENELEC as a European Standard without any modification. _ BS EN 61758-1:2008 2 CONTENTS 1 Scope.5 2 Normative references .6 3 Terms, definitions and abbreviations 7 3.1 Terms and definitions 7 3.2 Abbreviations 8 4 General description 8 4.1 Functional requirements 8 4.2 En
15、vironmental requirements8 4.3 Functional closure parts 9 4.3.1 Primary function 9 4.3.2 Cover functional requirements .9 4.3.3 Base or end plate functional requirements .9 4.3.4 Opening and closing functional requirements.9 4.3.5 Closure seal functional requirements.9 4.3.6 General functional requir
16、ements 10 5 Closure overpressure safety.10 6 Grounding interface10 7 General closure interfaces10 8 Cable to closure interface.10 8.1 General .10 8.2 Functional requirements 10 8.2.1 General .10 8.2.2 Cable entry port.11 8.2.3 Repair, maintenance and testing .11 8.2.4 Moisture and gas ingress, seali
17、ng and blocking .11 8.2.5 Mechanical impacts .12 8.2.6 Cable and closure handling .12 8.2.7 Electrical continuity and lightning protection 12 8.2.8 Fire-related performance .12 8.2.9 Identification of cables and sub-parts 12 8.2.10 Biotic protection.12 8.2.11 Cable anchoring and supporting elements
18、to closure .13 8.2.12 UV resistance13 8.2.13 Resistance to aggressive media 13 9 Closure to FMS interface13 9.1 General .13 9.2 Functional requirements 13 9.2.1 Mounting of the FMS to the closure .13 9.2.2 Identification13 9.2.3 Access to FMS 14 9.2.4 Bending radius 14 9.2.5 Mechanical impacts .14 9
19、.2.6 FMS grounding 14 BS EN 61758-1:2008 3 9.2.7 Fire hazard (optional for indoor applications).14 9.2.8 Laser safety.14 9.2.9 High optical power damage .14 10 Other parts of the closure interface 15 10.1 General .15 10.2 Passive components that may be included in a closure .15 10.2.1 xWDM .15 10.2.
20、2 Moisture sensors .15 10.2.3 Security features .15 10.2.4 Connectors and adaptors.15 10.2.5 Pressure relief valves 15 10.2.6 Splitters/couplers.15 10.2.7 Optical switches 16 10.2.8 Desiccant 16 10.3 Active components that may be included in a closure 16 10.3.1 Moisture sensors .16 10.3.2 Security a
21、larms16 10.3.3 Optical switches 16 10.3.4 Converters.16 11 Closure interface to external siting .16 11.1 Functional requirements 16 11.2 Mounting of the closure to the external siting.16 11.3 Cable entry orientation 16 11.4 Identification16 11.5 Access to closure and cable 16 11.6 Earthquake resista
22、nce.17 11.7 Closure grounding .17 11.8 Lightning protection.17 11.9 Fire hazard (optional for indoor applications).17 11.10 External siting of closure in aerial applications 17 Bibliography18 Figure 1 Closure and FMS functions 6 BS EN 61758-1:2008 4 Annex ZA (normative) Normative refereneces to inte
23、rnational publications with theircorresponding European publications .19FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS INTERFACE STANDARD FOR CLOSURES Part 1: General and guidance 1 Scope This part of IEC 61758 provides general information and guidance on the subject of closures. It incl
24、udes references, general closure and interface descriptions and definitions. This standard defines the following general interfaces for closures: interface to cables; interface to FMS; interface to parts other than FMS or cables; interface to external sitings (pits, manholes etc.) This specification
25、 covers all types of closures. The performance requirements are given in IEC 61753-111 series (in preparation). This closure standard allows both single mode and multi-mode fibre to be used, and covers all IEC standard optical fibre cables as listed in Clause 2, with their various fibre capacities,
26、types and designs. Figure 1 shows and defines the interface between the closure and the fibre management system. BS EN 61758-1:2008 5 a f c e b d m k p k n h g Fibre management system* Closure* j IEC 532/08 Key Closure functions* (a) Cable sealing (b) Cable anchorage (c) Cable blockage (d) Cable gas
27、 blocking (e) Distribution element (f) Identification * Example of Closure FMS functions* (g) Organiser/splice tray(s) (h) Fibre storage (j) Distribution element (k) Passive components (m) Guiding elements (n) Connectors (p) Cable element storage * * Example of FMS Figure 1 Closure and FMS functions
28、 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 edition of the referenced document (including any amendments) applies. IEC 60068-3-3, Environmen
29、tal testing Part 3: Guidance Seismic test methods for equipment IEC 60721-2-6, Classification of environmental conditions Part 2: Environmental conditions appearing in nature Earthquake vibration and shock IEC 60793-2 (all parts), Optical fibres Part 2: Product specifications IEC 60794-2 (all parts)
30、, Optical fibre cables Part 2: Indoor cables IEC 60794-3 (all parts), Optical fibre cables Part 3: Outdoor cables IEC 60825-2, Safety of laser products Part 2: Safety of optical fibre communication systems (OFCS) IEC 61300 (all parts), Fibre optic interconnecting devices and passive components Basic
31、 test and measurement procedures BS EN 61758-1:2008 6 IEC 61753 (all parts), Fibre optic interconnecting devices and passive components performance standard IEC 61753-1, Fibre optic interconnecting devices and passive components performance standard Part 1 General and guidance for performance standa
32、rds IEC 61756-1, Fibre optic interconnecting devices and passive components Interface standard for fibre management systems Part 1: General and guidance IEC/TR 62222, Fire performance of communication cables installed in buildings 3 Terms, definitions and abbreviations 3.1 Terms and definitions 3.1.
33、1 ancillary components components that are used for functions other than optical transmission 3.1.2 closure all external housings except outdoor cabinets 3.1.3 enclosure indoor housings (cabinets, cases, distribution frames) and outdoor cabinets 3.1.4 housing closure or enclosure 3.1.5 intervention
34、opening the cover, modifying, adding, removing or repairing fibre circuits, splices, connectors or other components between the incoming and outgoing cables of an existing fibre management system 3.1.6 optical node a point of intervention in the network, e.g. at each opening of a cable jacket or at
35、the end of the cable NOTE Nodes in this specification are parts of the physical network containing closures and fibre management systems capable of performing their expected function in the network, while exposed to the environment that they are intended to reside in. 3.1.7 fibre management system s
36、ystem to control, protect and store fibres from the incoming to the outgoing fibres IEC 61756-1, definition 3.1.4 3.1.8 active optical component optical component or assembly which makes use of quantum-mechanical effects or generates optical gain of signal power, or directly modulates optical signal
37、s NOTE 1 Examples include optical amplifiers. BS EN 61758-1:2008 7 NOTE 2 Sometimes optical sources and optical detectors have been designed as active optical components. IEC 61756-1, definition 3.1.14. 3.1.9 passive optical component an optical component or assembly which does not require any sourc
38、e of energy for its operation other than optical input signals, or controls the dynamic or static characteristics of optical signals using a source of energy; an optical passive component never generates an optical gain of signal power NOTE 1 Examples include optical attenuators and passive branchin
39、g devices. NOTE 2 Photo diode, which is an active component used as simple signal monitoring, might be treated as a passive optical component. IEC 61756-1, definition 3.1.15 3.1.10 external siting mounting location for closures 3.2 Abbreviations FMS: fibre management system xWDM: wavelength division
40、 multiplexing device (DWDM, CWDM, etc.) 4 General description 4.1 Functional requirements The general function of the closure is to provide: a housing for a fibre management system, including cable element storage, and ancillary passive or active components or other functional parts to build an opti
41、cal node; a management system for the external environment, e.g. subterranean chambers, aerial poles and street cabinets; environmental and mechanical protection. The following ancillary passive and active optical components may be stored or installed in the closure, but outside of the fibre managem
42、ent system or other functional parts of the optical node: electronic sensors and ancillary equipment for the detection of moisture ingress; communication electronic alarm devices and cable equipment for the transmission of signals to an external remote control station; grounding to earth of metallic
43、 parts of the structure and cables for operator safety. 4.2 Environmental requirements The primary environmental requirements are: environmental protection; mechanical protection. Environmental and mechanical protection prevents damage to the closure and protect internal closure components and assem
44、blies from external environmental influences, including BS EN 61758-1:2008 8 temperature, humidity, vibration, impact, compression, torsion, bump, tension and aggressive and corrosive media. Environmental performance tests are carried out to suit the installed environment. Each has an appropriate se
45、verity category listed in IEC 61300 and IEC 61753-1: S: subterranean (underground); A: aerial; G: ground level; C: controlled (in building). 4.3 Functional closure parts 4.3.1 Primary function The primary function of the closure is to protect the fibre and other functional parts and to provide quick
46、 access to all internal components and assemblies. The primary functional parts of the closure are: covers; base or end plates; closing parts; seals for the base or end plates. 4.3.2 Cover functional requirements The closure cover requires the following features: sealing feature; means of attachment
47、 . 4.3.3 Base or end plate functional requirements The primary function of the base or end plate is cable attachment and sealing. The closure base or end plate requires the following features: sealing feature; means of attachment; cable entry ports. 4.3.4 Opening and closing functional requirements
48、The opening and closing function provides access to internal members, adequate closing force and structural strength. The closure cover to base fixing requires the following features: secure fixing; sealing feature. 4.3.5 Closure seal functional requirements The function of these parts of the closur
49、e is to form a gas and liquid resistant seal. BS EN 61758-1:2008 9 4.3.6 General functional requirements In addition to the above the following functions shall be provided, where required, in each closure: ability to attach other structural parts; ability to fit an air pressure valve. 5 Closure overpressure safety Overpressure can build up in sealed closures due to temperature differentials over a period of time, or due to tightness te
