436 



ELECTRICAL EQUIPMENT 



funnel-shaped bowl into which the water flows and from which it 

 drains into the waste. The latter is constructed on the check- 

 valve principle. It is provided with a valve rod working through 



FIG. 274. Water-cooled Shell-type Transformer Removed from Tank. 



a water-tight bushing and acting to close an electric circuit which, 

 in turn, may light a lamp or operate a relay-depending on the 

 condition of the water flow. When this is stopped or reduced 



