... transformer is composed of body, switches equipment, fuse, tap-changers,all together in a sealed full ... a metal plate. Cable come from the concrete base of the trench into the high/low voltage ... -load tap changer, off-circuit tap changer, inset fuse, pressure relief valve,oil indicator, thermometer, oiling plug ... : A, four pole type construction core, fuse and L.V. winding are connected in series as ...