Evaluation of Dynamic Hydrophobicity of Polymeric Insulation Materials under AC Voltage Stress

Based on the results of the WG D1.14 (TB 442 [1]) and WG D1.27 [2], this Working Group focused on the use of the Dynamic Drop Test (DDT). With the experience and the improved test description, the WG D1.58 was funded with the aim of developing a suitable test setup and procedure for an AC test on clean surfaces, which can be introduced worldwide. The tasks in this WG were to:
- describing and defining the basics of hydrophobicity retention, recovery, and transfer for silicone rubber based materials,
- improving the Dynamic Drop Test procedure,
- validate the reproducibility and repeatability of the test results by using the Round Robin Tests (RRT) approach on retention of hydrophobicity under AC stress.

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D1

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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