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In order to obtain the influence of metallic particles on the insulating performance of vegetable insulating oil, copper particles were chosen to contaminate the vegetable insulating oil. The AC breakdown voltage of rapeseed insulating oil with different copper particle concentrations was measured. The dielectric properties i.e. relative permittivity, dielectric loss tangent and volume resistivity...
The vegetable insulating oil is applied increasingly as dielectric liquid in transformers, but it is vulnerable to particles especially the metallic particles. In this paper, focus is made on the influence of metallic particles such as copper and iron particles on the breakdown strengths of vegetable insulating oil. The relationship of AC breakdown strengths and the metallic particle concentration...
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