Cooling thumb|upright|right|Cutaway view of liquid-immersed transformer. The conservator (reservoir) at top provides liquid-to-atmosphere isolation as coolant level and temperature changes. The walls and fins provide required heat dissipation.
Cooling thumb|upright|right|Cutaway view of liquid-immersed transformer The conservator (reservoir) at top provides liquid-to-atmosphere isolation as coolant level and temperature changes The walls and fins provide required heat dissipation