504 



ELECTRICAL EQUIPMENT 



frame equipped with shaft, handle worm gear and winding and 

 unwinding drums. The advantage of this equipment is that it 

 allows a tank to be removed or placed in position without diffi- 



FIG. 310. Typical 35,000-volt Oil Circuit Breaker of the Tank-type Con- 

 struction Mounted on Framework. 



culty. The device is readily detachable and can be moved by one 

 man from one breaker to another. These breakers are always 

 top-connected and self-contained. They are made for either 



