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Flashover of Contaminated Solid Insulators for DC Power Distribution on Vessels

Abstract

Solid insulators are key components for DC power distribution on electrified vessels. If exposed to conductive contaminants, their electrical performance will be reduced, jeopardizing system reliability and personnel safety. In this work, 20 to 40 mm insulators from three vendors were voltage tested with and without salt water contamination. The breakdown strength was reduced from around 0.6-0.7 kV/mm under clean conditions to typically 0.1-0.2 kV/mm for insulators sprayed with salt water. The findings are relevant for designers as well as operators as this emphasizes the need for barriers and/or regular maintenance in exposed areas.
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Category

Academic chapter

Language

English

Affiliation

  • SINTEF Energy Research / Elkraftteknologi

Date

05.08.2025

Year

2025

Publisher

IEEE (Institute of Electrical and Electronics Engineers)

Book

2025 IEEE Electric Ship Technologies Symposium - ESTS

ISBN

9798331525170

Page(s)

372 - 377

View this publication at Norwegian Research Information Repository