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High Voltage Engineering Fundamentals by W. S. Zaengl, E. Kuffel, John Kuffel

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Chapter 7 Non-destructive insulation test techniques

This chapter is dedicated to test techniques, which provide information about the quality of insulation systems which form part of an equipment or apparatus. The tests as described here take advantage of well-known or desirable electrical properties of either a specific dielectric material or an insulation system as formed by a combination of different (fluid and/or solid) materials. Although also mechanical or chemical tests are often applied to assess the insulation quality, such tests are not taken into account.

Tests related to electrical properties are usually based on measurements of insulation resistance or (d.c.) resistivity as well as capacitance and loss factors, which are dependent ...

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