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Featured Products. View All Publishers. Quality Management. SCC Standards Store. Popular Standards Bundles. Drawing and Drafting. Telecommunications Standards. AWS D1. Means, Inc. Look Inside. IEC 2nd Edition, December Complete Document. Telecontrol equipment and systems - Part 2: Operating conditions - Section 1: Power supply and electromagnetic compatibility.
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Scope and object This section of IEC applies to telecontrol equipment and systems with coded bit serial data transmission for monitoring and control of geographically widespread processes. It is also a reference document for teleprotection equipment and systems and for equipment included in a distribution line carrier DLC system supporting a distribution automation system DAS. This standard specifies, with reference to the various components of the systems defined above: 1 the characteristics of the power supply to which these components are connected during the normal operation; 2 the EMC minimum requirements, expressed in terms of immunity and emission test levels.
With reference to EMC, the test levels have been selected among the classes established by the IEC basic publications on EMC, taking into account the particular environmental conditions under which the various types of equipment considered by this section operate; test procedures, test circuits and acceptance criteria are briefly indicated, making reference for detailed information to the IEC basic publications on the various subjects; reference is also made to basic publications on protection techniques and installation practices.
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IEC System of Conformity Assessment Schemes
In electrical engineering and power system automation , the International Electrotechnical Commission standards define systems used for telecontrol supervisory control and data acquisition. Such systems are used for controlling electric power transmission grids and other geographically widespread control systems. By use of standardized protocols, equipment from many different suppliers can be made to interoperate. IEC standard has six parts, defining general information related to the standard, operating conditions, electrical interfaces, performance requirements, and data transmission protocols. IEC part 5, known as Transmission protocols ,  provides a communication profile for sending basic telecontrol messages between two systems, which uses permanent directly connected data circuits between the systems.
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