. Development and electrical distribution of water power . and switch oil, so that oil can be run into any trans-former case. There is also an oil-treating tank similar to that inthe power station, as described in the article on the power second floor of this substation is the switchboard and switch-room, shown in Fig. 137. The 47,500-volt wires are kept on oneside of the station, and the wires on the other of the high-tension wiring in the upper part of this floor of TAYLOR S FALLS PLANT 255 the building is shown in Fig. 138, where the 47,500-volt wiring isse
. Development and electrical distribution of water power . and switch oil, so that oil can be run into any trans-former case. There is also an oil-treating tank similar to that inthe power station, as described in the article on the power second floor of this substation is the switchboard and switch-room, shown in Fig. 137. The 47,500-volt wires are kept on oneside of the station, and the wires on the other of the high-tension wiring in the upper part of this floor of TAYLOR S FALLS PLANT 255 the building is shown in Fig. 138, where the 47,500-volt wiring isseen on the right. The general scheme of the wiring of this mainsubstation is shown in Fig. 139. The incoming 47,500-volt trans-mission line, after passing the disconnecting switches, choke coils,and series transformers, is taken to a set of oil switches and thencethrough another set of disconnecting switches to the 47,500-voltbus-bars. The ultimate plan is to have twTo sets of 47,500-volt bus-bars which can be connected with an oil junction switch. Every. Fig. 137.—Switch-board Room over Transformer Room. other bank of transformers is connected to one set of bus-bars, andthe remainder to the other set. The 13,800-volt terminals of thetransformers are connected to two sets of bus-bars in a similarmanner. The city transmission lines are taken off from these lat-ter bus-bars and are led through oil switches and potential andseries transformers to the transmission lines. The 13,000-volt Distribution.—There are three transmissionlines leaving the main substation, all of which lines feed intothe Main-Street station of the Minneapolis General Electric 256 DEVELOPMENT AND DISTRIBUTION OF WATER POWER
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