“…Based on Figure 13, SDD is the most influential factor in effecting insulation flashover voltage. This is based on the review of 47 papers [24][25][26][27][28][29], [31], [33], [34], [36], [37], [39], [40], [42], [43], [45], [46], [48][49][50][51], [54][55][56], [58][59][60], [63], [64], [66], [67], [69][70][71][72][73], [78 -81], [86], [89 -92], [96], [97], [99], [100], [120], [122], [126], [128], [130], [131], …”