IEC 62236-1-2003 pdf – Railway applications – Electromagnetic compatibility – Part 1: General.
1 Scope 1.1 This Part 1 of the International Standards series IEC 62236 outlines the structure and the content of the whole series. Annex A describes the characteristics of the railway system which affect electromagnetic compatibility (EMC) behaviour. Annex B specifies a management process for achieving EMC at the interface between the railway infrastructure and trains. The objective of the whole series of standards is to specify the EM emission and immunity requirements for railway products, and for the railway as an installation. Phenomena excluded from the series are nuclear EM pulse, abnormal operating conditions and the induction effects of direct lightning strike. Emission limits at the railway boundary do not apply to intentional transmitters within the railway boundaries. Safety considerations are not covered by this series of standards. The biological effects of non-ionizing radiation as well as apparatus for medical assistance, such as pacemakers, are not considered here. 1.2 This International Standard is supplemented by the following specific standards: IEC 62236-2, Railway applications – Electromagnetic compatibility – Part 2: Emission of the whole railway system to the outside world IEC 62236-3-1, Railway applications – Electromagnetic compatibility – Part 3-1: Rolling stock – Train and complete vehicle IEC 62236-3-2, Railway applications – Electromagnetic compatibility – Part 3-2: Rolling stock – Apparatus IEC 62236-4, Railway applications – Electromagnetic compatibility – Part 4: Emission and immunity of the signalling and telecommunications apparatus IEC 62236-5, Railway applications – Electromagnetic compatibility – Part 5: Emission and immunity of fixed power supply installations and apparatus
IEC 60050(161), International Electrotechnical Vocabulary (IEV) – Chapter 161: Electro- magnetic compatibility IEC 61000-6-2, Electromagnetic compatibility (EMC) – Part 6-2: Generic standards – Immunity for industrial environments 3 Definitions For the purpose of this part of IEC 62236, definitions related to EMC and to relevant phenomena may be found in IEC 60050(161). Other parts of this International Standard may contain specific definitions. 4 Performance criteria NOTE This clause is based on IEC 61000-6-2. The variety and the diversity of the apparatus within the scope of this series of standards make it difficult to define precise criteria for the evaluation of the immunity test results. If, as a result of the application of the tests defined in this series of standards, the apparatus becomes dangerous or unsafe, the apparatus shall be deemed to have failed the test. A functional description and a definition of performance criteria, during or as a consequence of the EMC testing, shall be provided by the manufacturer and noted in the test report, based on the following criteria: – Performance criterion A The apparatus shall continue to operate as intended during and after the test. No degradation of performance or loss of function is allowed below a performance level specified by the manufacturer, when the apparatus is used as intended. The performance level may be replaced by a permissible loss of performance. If the minimum performance level or the permissible performance loss is not specified by the manufacturer, either of these may be derived from the product description or documentation, and, subsequently,what the user may reasonably expect from the apparatus if used as intended. – Performance criterion B The apparatus shall continue to operate as intended after the test. No degradation of performance or loss of function is allowed below a performance level specified by the manufacturer, when the apparatus is used as intended. The performance level may be replaced by a permissible loss of performance.
5 Management of EMC The railway is a complex installation with moving sources of electromagnetic energy and the application of the EMC standards in the IEC 62236 series is not a guarantee of satisfactory performance. There may be cases where apparatus has to be positioned in restricted spaces or added to an existing assembly, with the possible creation of environments of unusual severity. All cases shall be considered with respect to a formal plan for the management of EMC. This plan should be established at as early a stage of the project as is possible and Annex B gives details of such a management plan. NOTE Annex B is normative with a limited scope; however, operation outwith the scope should consider whether the use of the management plan could be beneficial.