Technical brochure
TB 888 WG D1.50

Atmospheric and altitude correction factors for air gaps and clean insulators

The influence of atmospheric conditions on the dielectric strength of external insulation is complex. This is because the degree of influence is different for different discharge processes, e.g., corona, streamer, and leader discharges. At the same time, the type of discharge processes that may appear across the insulation is determined by many other parameters.

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Materials and emerging test techniques

This Technical Brochure has been created by a Working Group from the CIGRE Materials and emerging test techniques Study Committee which is one of CIGRE's 16 domains of work.
The scope of Study Committee D1 covers new and existing materials for electrotechnology, diagnostic techniques and related knowledge rules, as well as emerging test techniques with expected impact on power systems in the medium to long term.

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