. Electric railway journal . Scheveningen Single-Phase Railway—Head-on View ofMotor Car the starting points, and the two secondary ends to the endpoints of the motors. The purpose of this transformer istwo-fold: First, to permit cutting out a motor if injured;second, to prevent the interruption of the entire circuitwhen the several contactors are cut out in moving from stepto step. If a contactor is opened, the .motor which it serveswill receive current from the other winding by way of theequalizing transformer. Naturally this produces a certain. Scheveningen Single-Phase Railway—A Standard Fo
. Electric railway journal . Scheveningen Single-Phase Railway—Head-on View ofMotor Car the starting points, and the two secondary ends to the endpoints of the motors. The purpose of this transformer istwo-fold: First, to permit cutting out a motor if injured;second, to prevent the interruption of the entire circuitwhen the several contactors are cut out in moving from stepto step. If a contactor is opened, the .motor which it serveswill receive current from the other winding by way of theequalizing transformer. Naturally this produces a certain. Scheveningen Single-Phase Railway—A Standard Four-Car Train, Consisting of a Motor Car at Each End and Two Trailers in the Center, Seating 305 Passengers in All this that on the first step the voltage must be 116 plus 151divided by 2, giving volts per motor. Owing to these special connections^ the series arrange-ment does not give a higher difference of potential betweenany two points than would a shunt connection. Thus, 116 choke-coil effect, which ceases immediately, however, uponthe closing of the next step. The several differences of potential are obtained by alter-nately raising the voltage of one or the other transformersecondary windings. If steps 1, 3, 5 and 7 be taken for October 2. 1909.] ELECTRIC RAILWAY JOURNAL. 601 winding No. 1, and 2, 4, 6 and 8 for winding Xo. 2, thecontrol would take place as follows: Step Motor Voltage i92-5 227 262 297 337-5 Step SwitchesClosed1—23—23—45—45-67-67-8 The cars are provided with plug-in connections,
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