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10、22 919 03 00 IEC/TR 62362 Edition 1.0 2010-05 TECHNICAL REPORT Selection of optical fibre cable specifications relative to mechanical, ingress, climatic or electromagnetic characteristics Guidance INTERNATIONAL ELECTROTECHNICAL COMMISSION R ICS 33.180.10 PRICE CODE ISBN 978-2-88910-941-8 Registered
11、trademark of the International Electrotechnical Commission colour inside 2 TR 62362 IEC:2010(E) CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope.6 2 Normative references .6 3 Acronyms .6 4 MICE attributes and severities6 4.1 General .6 4.2 Mechanical7 4.2.1 Shock/bump 7 4.2.2 Vibration7 4.2.3 Tensile forc
12、e7 4.2.4 Crush 7 4.2.5 Impact .7 4.2.6 Bending, flexing and torsion 7 4.3 Ingress7 4.3.1 Basic consideration .7 4.3.2 Particulate ingress.7 4.3.3 Water immersion .8 4.4 Climatic.8 4.4.1 General .8 4.4.2 Ambient temperature .8 4.4.3 Rate of change of temperature 8 4.4.4 Humidity8 4.4.5 Solar radiatio
13、n.8 4.4.6 Liquid pollution 9 4.4.7 Gaseous pollution9 4.5 Electromagnetic 10 Annex A (informative) Details of MICE classification 11 Annex B (informative) IEC cable standards13 Annex C (informative) Fibre specifications and tests15 Bibliography18 Table 1 Resistance to solar radiation .8 Table 2 Liqu
14、id pollution9 Table 3 Gaseous pollution resistance 10 Table 4 Gaseous pollution resistance 10 Table A.1 Details of MICE classification (Mechanical)11 Table A.2 Details of MICE classification (Ingress)11 Table A.3 Details of MICE classification (Chemical) .11 Table A.4 Details of MICE classification
15、(Gas) .12 Table A.5 Details of MICE classification (Electromagnetic) 12 TR 62362 IEC:2010(E) 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ SELECTION OF OPTICAL FIBRE CABLE SPECIFICATIONS RELATIVE TO MECHANICAL, INGRESS, CLIMATIC OR ELECTROMAGNETIC CHARACTERISTICS GUIDANCE FOREWORD 1) The Internation
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25、 upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the eleme
26、nts of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. The main task of IEC technical committees is to prepare International Standards. However, a technical committee may propose the publication of a technical
27、 report when it has collected data of a different kind from that which is normally published as an International Standard, for example “state of the art“. IEC 62362 which is a technical report, has been prepared by subcommittee 86A: Fibres and cables, of IEC technical committee 86: Fibre optics. The
28、 text of this technical report is based on the following documents: Enquiry draft Report on voting 86A/1297/DTR 86A/1302/RVC Full information on the voting for the approval of this technical report can be found in the report on voting indicated in the above table. 4 TR 62362 IEC:2010(E) This publica
29、tion has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this
30、 date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which are considered to b
31、e useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. TR 62362 IEC:2010(E) 5 INTRODUCTION Optical fibre cable specification standards are defined in the IEC 60794 series, which are listed in Annex B. They are organized in a hierarc
32、hy similar to the IECQ system. They differ from the IECQ system in that they are all performance standards. Optical fibre cable standards mainly cover the attributes and tests that protect the fibre from the environment, including installation, and the fibre attributes that may be affected by cablin
33、g. The attributes of the fibres within the cable are defined by reference to optical fibre specification standards of the IEC 60793 series, which are listed in Annex C. A complete and up-to-date listing of standards in the IEC 60793 and IEC 60794 series is available on website of the IEC: http:/www.
34、iec.ch. The different levels of hierarchy are: general, sectional, family, and product. The primary distinction between these is the level of detail. Typically more options or wider ranges are present at the higher level. At a given level, the distinctions are with respect to application or cable co
35、nstruction. The references section of this document gives a more complete mapping. Parts of the family specification include blank detail specifications for various attributes that do not have normative requirements. At the sectional specification level, two main categories are indoor and outdoor ca
36、bles. Typically the outdoor cables have tougher tests than the indoor cables. At the product specification level, there are series of standards intended to support ISO/IEC 11801 for premises cabling, using both indoor and outdoor varieties. This guidance will not attempt to reproduce the requirement
37、s of all the different specifications. For each of the MICE attributes, it will discuss the situation and mention the key options. 6 TR 62362 IEC:2010(E) SELECTION OF OPTICAL FIBRE CABLE SPECIFICATIONS RELATIVE TO MECHANICAL, INGRESS, CLIMATIC OR ELECTROMAGNETIC CHARACTERISTICS GUIDANCE 1 Scope The
38、purpose of this guidance is to provide information on the specification of optical fibre cables with respect to the mechanical, ingress, climatic or electromagnetic characteristics (MICE) as classified within ISO/IEC 24702. In this classification system each letter of the four initials of the acrony
39、m are subscripted with a value of from one to three to indicate different severities. The current attributes and severities are found in Annex A. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition c
40、ited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60794-1-2, Optical fibre cables Part 1-2: Generic specification Basic optical cable test procedures IEC 60794-2 (all parts), Optical fibre cables Part 2: Indoor optical fibre c
41、ables IEC 60794-3 (all parts), Optical fibre cables Part 3: Outdoor cables ISO/IEC 24702, Information technology Generic cabling Industrial premises ISO/IEC 11801, Information technology Generic cabling for customer premises 3 Acronyms MICE Mechanical, ingress, climatic and chemical, electromagnetic
42、 4 MICE attributes and severities 4.1 General The MICE classification system has three levels of severity: the first level of severity (M1I1C1E1) describes a typical environment such as that assumed within ISO/IEC 11801; (i.e. office premises etc.); the second level of severity (M2I2C2E2) describes
43、a worst-case light industrial environment; the third level of severity (M3I3C3E3) describes a worst-case industrial environment. See Annex A for a more detailed description of the MICE severity levels. TR 62362 IEC:2010(E) 7 4.2 Mechanical 4.2.1 Shock/bump Shock and bump are not specified for optica
44、l fibre cables. They are inherently robust in this respect. A more important attribute is bending. 4.2.2 Vibration Vibration in the industrial premises (as opposed to wind induced vibration on aerially deployed cables) is not specified for optical fibre cables. They are inherently robust in this res
45、pect. 4.2.3 Tensile force For outdoor premises cables specified in IEC 60794-3 series, manufacturers specify a rated tensile force. The requirement is that the fibre shall not exceed a percentage of the proof test strain (to be agreed between customer and supplier) when the cable is tested at the ra
46、ted load. For indoor cables, the different family specifications of IEC 60794-2 series have different requirements on the tensile load. 4.2.4 Crush For optical fibre cables, the crushing force is applied in a plate to plate test. For indoor cables, crush is specified at 500 N. For outdoor cables, di
47、fferent levels are specified depending on whether the cable is armoured or not. For unarmoured cable, values of between 1 500 N and 3 000 N may be specified. For armoured cable, values between 2 200 N and 10 000 N may be specified. 4.2.5 Impact For indoor cables a value of 1 J with a 12,5 mm radius
48、is specified. For un-armoured outdoor cables, a value of either 10 J with a 300 mm radius or 3 J with a 10 mm radius is specified. 4.2.6 Bending, flexing and torsion All the family specifications have requirements on these attributes. For bending, there are multiple tests such as bending under tensi
49、on, repeated bending and simple bending. The bending diameter is typically 20 times the cable diameter. For torsion, the test length, load, and number of turns varies depending on the family specification. For indoor cables, the length is from 250 mm to 1 000 mm, loaded at 20 N with 20 cycles applied. 4.3 Ingress 4.3.1 Basic consideration Optical fibre cables come in a variety of constructions. Some examples are slotted core, loose tube, tight bu
