IEC 81346-2:2019 establishes classification schemes with defined object classes and their associated letter codes, and is primarily intended for use in reference designations and for designation of generic types. The classification schemes are applicable for objects in all technical disciplines and all branches of industry. IEC 81346-2:2019 is a horizontal publication also intended for for use by technical committees in preparation of publications related to reference designations in accordance with the principles laid down in IEC Guide 108. IEC 81346-2:2019 cancels and replaces the first edition published in 2009. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) The entry classes of the classification scheme have been defined to reflect the \u201cinherent function\u201d of the object classified; b) The classes are defined to align with the principles of ISO 22274 and ISO 704; c) A three-level classification scheme has been defined, which provides a greater flexibility for the designer in some technical fields; d) Classes are defined by their definition and provided with a preferred term. Examples are provided if needed; e) A separate classification scheme for spaces has been provided.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | Annex ZA(normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | INTRODUCTION <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 4 Classification principles 4.1 General <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 4.2 Relation between classification and composition 4.3 Classification schemes of this document Figures Figure 1 \u2013 Illustration of a classification hierarchy and a composition hierarchy <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 5 Classification scheme for the inherent function of objects 5.1 General 5.2 Entry classes <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 5.3 Complete classification scheme Tables Table 1 \u2013 Entry classes <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | Table 2 \u2013 First two levels of the classification scheme for inherent function of objects <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | Table 3 \u2013 Complete classification scheme for inherent function of objects <\/td>\n<\/tr>\n | ||||||
| 73<\/td>\n | 6 Classification of spaces <\/td>\n<\/tr>\n | ||||||
| 74<\/td>\n | Table 4 \u2013 Classification scheme for spaces <\/td>\n<\/tr>\n | ||||||
| 83<\/td>\n | 7 Classification of objects applicable for infrastructure <\/td>\n<\/tr>\n | ||||||
| 84<\/td>\n | Table 5 \u2013 Classes of infrastructure objects <\/td>\n<\/tr>\n | ||||||
| 85<\/td>\n | Table 6 \u2013 Examples of branch-related classes B to U of Table 5 <\/td>\n<\/tr>\n | ||||||
| 86<\/td>\n | Annex A (informative) Classification criteria for objects A.1 General A.2 Structure of classes and subclasses <\/td>\n<\/tr>\n | ||||||
| 87<\/td>\n | A.3 Definition of classes Figure A.1 \u2013 Illustration of class hierarchy <\/td>\n<\/tr>\n | ||||||
| 88<\/td>\n | Annex B (informative) Object classes related to a generic process Figure B.1 \u2013 Object classes related to a generic process <\/td>\n<\/tr>\n | ||||||
| 89<\/td>\n | Annex C (informative) Object classes related to objects in a generic infrastructure <\/td>\n<\/tr>\n | ||||||
| 90<\/td>\n | Figure C.1 \u2013 Object classes related to objects in a generic infrastructure <\/td>\n<\/tr>\n | ||||||
| 91<\/td>\n | Annex D (informative) Comparison between Tables 1, 2 and 3 of this document and Tables 1 and 2 of IEC 81346-2:2009 Table D.1 \u2013 Comparison between Table 1 of the current edition and Table 1 of IEC 81346-2:2009 Table D.2 \u2013 Comparison between Table 2 and Table 3 of the current edition and Table 2 of IEC 81346-2:2009 <\/td>\n<\/tr>\n | ||||||
| 95<\/td>\n | Annex E (informative) Basic requirements for the development of IEC 81346-2 <\/td>\n<\/tr>\n | ||||||
| 96<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Industrial systems, installations and equipment and industrial products. Structuring principles and reference designations – Classification of objects and codes for classes<\/b><\/p>\n |