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. 2016 Sep 7;6:32588. doi: 10.1038/srep32588

Figure 2. Space charge dynamics and breakdown strengths under ac stress.

Figure 2

(a) Experimental and simulated breakdown strengths of one-layer oil impregnated paper under 50–1000 Hz ac stress, (b) space charge distribution as a function of position at applied electric strength of 135 kV/mm in 50–1000 Hz ac breakdown processes of one-layer oil impregnated paper, (c) electric field distribution as a function of position at applied electric strength of 135 kV/mm (at phase angle of 90°) in 50–1000 Hz ac breakdown processes of one-layer oil impregnated paper.