ctor Switches To suit many substation layouts and voltage level specifications, HV disconnector switches are available in numerous layout configurations. 1.3.one Heart-Split Disconnector This frequent variety characteristics two relocating arms that pivot open from the middle, making a horizontal split. They're strong, give great visibility on the air gap, https://www.dostally.com/post/344845_these-transformers-are-pivotal-in-stepping-down-voltage-from-medium-voltage-dist.html