TRANSFORMERS 



433 



FIG. 272. 4300-Kv.A -55,000- Volt Single-phase Water-cooled Transformer 



desired, they are usually mounted on axles attached to the base of 

 the tank. Trucks, on the other hand, consist of a structural steel 

 frame with wheels fitted into the same. 



When reasonably pure water can be obtained, no trouble is 

 experienced with cooling coils in water-cooled transformers, but 

 if the water is unusually impure the cooling system is liable to 



