1、 ISO/IEC TR 29106 Edition 1.0 2007-11 TECHNICAL REPORT Information technology Generic cabling Introduction to the MICE environmental classification ISO/IEC TR 29106:2007(E) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2007 ISO/IEC, Geneva, Switzerland All rights reserved. Unless otherwise speci
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9、technology Generic cabling Introduction to the MICE environmental classification INTERNATIONAL ELECTROTECHNICAL COMMISSION F ICS 35.200 PRICE CODE ISBN 2-8318-9386-0 2 TR 29106 ISO/IEC:2007(E) CONTENTS FOREWORD.3 1 Scope.5 2 Reference documents.5 3 Terms, definitions and abbreviations 6 3.1 Terms an
10、d definitions 6 3.2 Abbreviations 6 4 Application of environmental classification6 4.1 MICE.6 4.2 Channel environment 6 4.3 Component selection.7 5 MICE system 10 5.1 General .10 5.2 Mechanical environment10 5.3 Ingress protection and climatic environment11 5.4 Chemical environment.13 5.5 Electromag
11、netic environment 15 Bibliography16 Figure 1 Example of variation of the environment along an industrial premises cabling channel.7 Figure 2 The local environment7 Table 1 Details of environmental classification.8 Table 2 Derivation of boundaries for mechanical criteria in Table 110 Table 3 Derivati
12、on of boundaries for ingress protection criteria in Table 111 Table 4 Derivation of boundaries for climatic criteria in Table 111 Table 5 Derivation of boundaries for chemical criteria in Table 113 Table 6 Derivation of boundaries for electromagnetic criteria in Table 1.15 TR 29106 ISO/IEC:2007(E) 3
13、 INFORMATION TECHNOLOGY GENERIC CABLING INTRODUCTION TO THE MICE ENVIRONMENTAL CLASSIFICATION FOREWORD 1) ISO (International Organization for Standardization) and IEC (International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are membe
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26、ate of the art. 4 TR 29106 ISO/IEC:2007(E) ISO/IEC 29106, which is a Technical Report of type 3, has been prepared by subcommittee 25: Interconnection of information technology equipment, of ISO/IEC joint technical committee 1: Information technology. Technical reports of types 1 and 2 are subject t
27、o review within three years of publication to decide whether they can be transformed into International Standards. Technical reports of type 3 do not necessarily have to be reviewed until the data they provide are considered to be no longer valid or useful. This Technical Report of type 3 has been a
28、pproved by vote of the member bodies, and the voting results may be obtained from the address given on the second title page. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. TR 29106 ISO/IEC:2007(E) 5 INFORMATION TECHNOLOGY GENERIC CABLING INTRODUCTION TO THE MIC
29、E ENVIRONMENTAL CLASSIFICATION 1 Scope This Technical Report acts as an introduction to the concepts used to develop the MICE environmental classification system used in cabling standards developed by ISO/IEC. It also provides detailed explanation of the sources used to define the boundaries of MICE
30、 classifications. 2 Reference documents 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. ISO/IEC 1
31、1801, Information technology Generic cabling for customer premises ISO/IEC 15018, Information technology Generic cabling for homes ISO/IEC 24702, Information technology Generic cabling Industrial premises IEC 60068-2-5:1975, Environmental testing Part 2: Tests. Test Sa: Simulated solar radiation at
32、ground level IEC 60654-4:1987 Operating conditions for industrial-process measurement and control equipment. Part 4: Corrosive and erosive influences IEC 60721-1, Classification of environmental conditions Part 1: Environmental parameters and their severities IEC 60721-3-3, Classification of environ
33、mental conditions Part 3-3: Classification of groups of environmental parameters and their severities - Stationary use at weatherprotected locations IEC 61000-2-5, Electromagnetic compatibility (EMC) Part 2: Environment Section 5: Classification of electromagnetic environments. Basic EMC publication
34、 IEC 61000-6-1, Electromagnetic compatibility (EMC) Part 6-1: Generic standards Immunity for residential, commercial and light-industrial environments IEC 61000-6-2, Electromagnetic compatibility (EMC) Part 6-2: Generic standards Immunity for industrial environments IEC 61131-2, Programmable control
35、lers Part 2: Equipment requirements and tests IEC 61326:2001, Electrical equipment for measurement, control and laboratory use EMC requirements IEC 61918, Industrial communication networks Installation of communication networks in industrial premises 6 TR 29106 ISO/IEC:2007(E) 3 Terms, definitions a
36、nd abbreviations 3.1 Terms and definitions For the purposes of this Technical Report the definitions of the applicable generic cabling standards ISO/IEC 11801, ISO/IEC 15018 and ISO/IEC 24702 apply. 3.2 Abbreviations For the purposes of this Technical Report the abbreviations of the applicable gener
37、ic cabling standards ISO/IEC 11801, ISO/IEC 15018 and ISO/IEC 24702 apply. 4 Application of environmental classification 4.1 MICE The term MICE referenced in generic cabling standards produced by ISO/IEC 1relates to the classification of the environment of the cabling channel. There are four primary
38、 environmental criteria used to classify an environment: the M element, defining the mechanical characteristics of the environment; the I element, defining the ingress protection characteristics of the environment; the C element, defining the climatic and chemical characteristics of the environment;
39、 the E element, defining the electromagnetic characteristics of the environment. Each of the four primary environmental criteria are further divided into specific parameters and levels for those parameters. The MICE classification for a given location is therefore defined as M a I b C c E dwhere a,
40、b, c and d are the individual sub-classifications (levels) for the M, I, C and E criteria respectively. The suffixes for the four primary environmental criteria are either 1, 2 or 3. For example, the most benign environment is described as M 1 I 1 C 1 E 1whereas the most harsh environment within the
41、 scope of this standard would be defined as M 3 I 3 C 3 E 3 . 4.2 Channel environment The applicable MICE classification may vary along the length of the cabling channel. As shown in the industrial premises cabling example of Figure 1, the ingress protection characteristics of the environment in the
42、 automation area and at the automation island are different from, and more severe than, those characteristics on the factory floor or in the telecommunications room. 1The documents prepared by subcommittee 25 of ISO/IEC joint technical committee 1: Information technology. TR 29106 ISO/IEC:2007(E) 7
43、Automation island M 3 I 3 C 3 E 3 Automation area M 1 I 2 C 3 E 2 Factory floor M 2 I 2 C 1 E 1 Telecommunications room M 1 I 1 C 1 E 1 NI Distributor Cabling channelFigure 1 Example of variation of the environment along an industrial premises cabling channel The environment to be classified is that
44、 local to the cabling. Where no environmental protection is provided to the cabling, the classification of the local environment is also that of the overall environment at that location. However, where technical or economic restrictions preclude the use of components compatible with the overall envi
45、ronment, mitigation or isolation techniques may be applied to modify one or more of the M, I, C or E environments local to the cabling in order to allow appropriate components to be installed. The mitigation or isolation techniques typically involve the use of alternative pathways and/or pathway sys
46、tems as shown in Figure 2. Overall environment Local environment Pathway system providing environmental protection CableFigure 2 The local environment 4.3 Component selection The components used within a channel should be selected to be compatible with the MICE classification of the channel at the p
47、oint where the components are to be installed. Table 1, taken from ISO/IEC 24702:2006, shows the parameters used to classify the local environment under the M, I, C and E criteria. While the classification of an environment is determined by the most demanding parameter within each criteria group, th
48、e selection of components may reflect the specific demands of all the parameters within the group, including those that may be less demanding than the overall classification of the environment. The MICE classification system is intended to address approximately 80 % of the environments to which cabl
49、ing may be subjected. There are some environments beyond the boundaries of M 3 I 3 C 3 E 3 . Such environments are beyond the scope of this Technical Report and require special handling. 8 TR 29106 ISO/IEC:2007(E) Table 1 Details of environmental classification Mechanical M 1M 2M 3Shock/bump (see a) Peak acceleration 40 ms -2100 ms -2250 ms -2Vibration Displacement amplitude (2 Hz to 9 Hz) 1,5 mm 7,0 mm 15,0 mm Acceleration amplitude (9
