. Electric railway journal . FIG. 4. EXTERIOR OF DES MOINES SINGLE-UNITAUTOMATIC SUBSTATION FIG. 5. EXTERIOR VIEW OF DOUBLE-UNIT AUTOMATICSTATION lines. The total amount of copper in the system atpresent is 460,000 lb. Table II shows the comparative investment requiredfor the two systems designated as A and B. SystemA includes the installation of rotary converters at the TABLEAU—COMPARISON OF COST OF TWO PROPOSED SYSTEMS TO INCREASE POWER SUPPLY AND PROVIDE ADDITIOKAt FEEDER CAPACITY System Power station buildings $15,000 $5,000 Transformers, rotary converters and automatic controlequipment, i
. Electric railway journal . FIG. 4. EXTERIOR OF DES MOINES SINGLE-UNITAUTOMATIC SUBSTATION FIG. 5. EXTERIOR VIEW OF DOUBLE-UNIT AUTOMATICSTATION lines. The total amount of copper in the system atpresent is 460,000 lb. Table II shows the comparative investment requiredfor the two systems designated as A and B. SystemA includes the installation of rotary converters at the TABLEAU—COMPARISON OF COST OF TWO PROPOSED SYSTEMS TO INCREASE POWER SUPPLY AND PROVIDE ADDITIOKAt FEEDER CAPACITY System Power station buildings $15,000 $5,000 Transformers, rotary converters and automatic controlequipment, including miscellaneous material and in-stallation 1 30,165 Transformers, rotary converters, switching equipment, including miscellaneous material and installation 76,300 Substation buildings 4,000 23,200 Transmission lines 12,000 58,183 Trolley and feeder system (copper only) 262,500 28,961 Rebuilding feeder lines 25,000 Switching equipment for transmission lines . 15,901 Equipment, miscellaneous material for changing stat
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
