The International Electrotechnical Commission (IEC) has published a standard for high-voltage test techniques, which is IEC 60060-1:2013. This standard provides general definitions and requirements for high-voltage testing of electrical equipment and systems. The standard is divided into several parts, and Part 1 covers the general definitions and requirements.
IEC 60060-1:2013 - High-voltage test techniques - Part 1: General definitions and requirements
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IEC 60060-1:2013 outlines the following test procedures:
You can download the PDF version of IEC 60060-1:2013 from the IEC website or other online sources. IEC 60060-1:2013 - High-voltage test techniques - Part
According to the PDF, a standard lightning impulse must have a front time of 1.2 microseconds (with a tolerance of ±30%) and a tail time of 50 microseconds (with a tolerance of ±20%).
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The PDF described the "Virtual Origin" ($O_1$). It explained how to draw a line through the 30% and 90% points of the rising curve to determine the effective start of the impulse.
In conclusion, the IEC 60060-1 PDF document provides comprehensive guidelines for high-voltage testing, covering test procedures, safety considerations, and measurement techniques. While the document may be complex and technical, it serves as a valuable resource for electrical engineers, testing and inspection personnel, and research and development teams.