IEC 60071-2 PDF

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IEC constitutes application guidelines and deals with the selection of insulation levels of equipment or installations for three-phase electrical systems. It gives guidance for the determination of the rated withstand voltages for ranges I and II of IEC and to justify the association of these rated values with the standardized highest voltages for equipment.

It covers three-phase systems with nominal voltages above 1 kV. It has the status of a horizontal standard in accordance with IEC Guide This edition includes the following significant technical changes with respect to the previous edition: a the annex on clearance in air to assure a specified impulse withstand voltage installation is deleted because the annex in IEC is overlapped; b 4.

Annex J on insulation co-ordination for very-fast-front overvoltages in UHV substations is added; d Annex H on atmospheric correction — altitude correction is added. Multi-user access to over 3, medical device standards, regulations, expert commentaries and other documents. Worldwide Standards We can source any standard from anywhere in the world. Learn more about the cookies we use and how to change your settings.

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Accept and continue Learn more about the cookies we use and how to change your settings. Electrical insulation, Impulse voltages, Overhead power lines, Surge protection, Overvoltage, Clearance distances, Mathematical calculations, Withstand voltage, Overvoltage protection, Classification systems, Electrical equipment, High-voltage equipment, Protected electrical equipment, Rated voltage, Three-phase current, Factor of safety, Statistical distribution, Electrical installations, Coordination, Dielectric strength, Statistical methods of analysis, Selection, High-voltage installations, Stress.

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Do you need a multi-user copy? IEC constitutes application guidelines and deals with the selection of insulation levels of equipment or installations for three-phase electrical systems. It gives guidance for the determination of the rated withstand voltages for ranges I and II of IEC and to justify the association of these rated values with the standardized highest voltages for equipment. It covers three-phase systems with nominal voltages above 1 kV.

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