TRANSPORTATION AND ERECTION 193 



ment is located indoors, while the transformers, high-voltage 

 switches and lightning arresters are located outdoors. 



A still more revolutionary power-house design has been sug- 

 gested by Mr. R. J. McClelland. 1 As seen from Fig. 102, the 



FIG. 102. Perspective of 50,000 Kv.A. Outdoor-Type Generating Station. 



plan proposes to put the generators and transformers, as well as 

 the high-tension equipment outdoors, while the exciters and the 

 more delicate control equipment are put under cover, where pro- 

 vision is also made for the repair shop. 



3. TRANSPORTATION AND ERECTION 



Transportation. The transportation of such large machines 

 as are generally involved in hydro-electric power stations requires 

 a careful consideration of the limitations imposed by the rail- 

 roads or carriers. It is furthermore evident that these points 

 must be considered at the time when the machines are selected 

 or designed. 



The shipping limitations are the clearances (height and width) 

 and the weight. The former are governed by tunnels, bridges, 



; > Electr. World, Sept. 25, 1915. 



