Abstract:The flashover threshold (Vflsh) of polymer insulations such as epoxy (EP) in HVDC systems can be augmented by modifying their surface with an appropriate treatment technology. For such purpose, several surface treatment methods such as ion beam, sandpaper and a combination of the two is introduced. Firstly, insulation samples with pure epoxy (EPpure), different ion beam treatment periods (EPion;10, 15, 20 min) and different roughness (EPsand; R1 = 4.23 μm, R2 = 6.34 μm, R3 = 9.21 μm) are prepared on the labora… Show more
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