. Electric railway journal . ndas a basis for power bills. 2. It automatically deducts regenerated power if re-turned to the power companys lines or transfer ofpower from one line to another over the railway com-panys transmission line. 3. It automatically limits the amount of power sup-plied to the division by lowering the trolley voltageand slowing down the trains so that the maximum peak load on the system cannot exceed a certain predeter-mined maximum. 4. Its maximum limit can be changed instantly, easily,accurately and directly by the dispatcher without thenecessity of notifying substatio
. Electric railway journal . ndas a basis for power bills. 2. It automatically deducts regenerated power if re-turned to the power companys lines or transfer ofpower from one line to another over the railway com-panys transmission line. 3. It automatically limits the amount of power sup-plied to the division by lowering the trolley voltageand slowing down the trains so that the maximum peak load on the system cannot exceed a certain predeter-mined maximum. 4. Its maximum limit can be changed instantly, easily,accurately and directly by the dispatcher without thenecessity of notifying substation operators. 5. It is capable of reducing the peak-power demandby 30 per cent. 6. If desired, the equipment can be adjusted so thatthe lightly loaded substations will not be affected, there-by providing the highest possible voltage for the oper-ation of passenger trains. 7. If desired, the equipment can be adjusted to reducethe voltage on the most heavily loaded substations atthe time of peak demand (above the maximum limit). OterLotiqe it^Dispatchtrs\,0/f,cc - *A brief reference to this system will be found in the abstractof the 1920 report of the committee on electricity of the AmericanRailway Engineering Association in the issue of this paper forAoril 3, page 695. CONNECTION DIAGRAM FOR ST. PAUL ELECTRIFICATION,ROCKY mountain AND MISSOULA DIVISIONS Showing connections of the 100,000-volt system of the Montana Power Co. and transmission lines of the railroad, with location of the 3,000-volt direct-current railway substations. slightly in advance of the other stations, thereby tend-ing to equalize the load on all the stations. 8. If an excessive demand for power occurs near anyone substation the voltage of that substation is auto-matically lowered without affecting the voltage of theother substations, dividing the load between the substa-tion affected and the stations on either side. 9. The total power fed in at any point or transferredfrom one power line to another or the amo
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