. Electric railway journal . The lower ends of this frame,as shown in the drawing on page 601, are cranked to twoaxles. The latter are joined by a closed chain, so that whenthey turn, the links must move through the same angle, but formers. Both transformers are oil-cooled and of the coretype. They are bolted to the under side of the car body inboxes, which are lined with metal to secure better radiationThe two motors per car are of the single-phase compen-sated series type, rated at 180 hp each on a one-hour basisand when running at 750 The gear ratio is prac-tically 1 13, which allows
. Electric railway journal . The lower ends of this frame,as shown in the drawing on page 601, are cranked to twoaxles. The latter are joined by a closed chain, so that whenthey turn, the links must move through the same angle, but formers. Both transformers are oil-cooled and of the coretype. They are bolted to the under side of the car body inboxes, which are lined with metal to secure better radiationThe two motors per car are of the single-phase compen-sated series type, rated at 180 hp each on a one-hour basisand when running at 750 The gear ratio is prac-tically 1 13, which allows a speed of to 62 6oo ELECTRIC RAILWAY JOURNAL. [Vol. XXXIV. No. 14. The motors are provided with auxiliary poles and eight setsof brush-holders, with four brushes each. The motors, ofcourse, are controlled through voltage regulation. A specialarrangement of circuits was devised for the purpose,whereby seven voltages can be obtained with only foursteps per motor. Two of the eight step switches are always. Scheveningen Single-Phase Railway—View in Motormans Cab closed. The secondary winding of the main transformer ismade in two parts, which are so connected with the motorsthat a transformer winding and motor always follow oneanother. Both motors, therefore, conduct the same cur-rent, and divide equally between themselves the total volt-age of both transformer windings. The first winding hastaps for 116, 175, 244 and 314 volts, and the second wind-ing for 151, 210, 280 and 361 volts. It will be seen from volts is induced in the first winding, whereas volts istaken by the first motor, leaving a negative balance of ; the second winding gives 151 volts, of which the sec-ond motor takes volts, leaving a positive balance volts. As these differences cancel each other, the dif-ference of potential is again zero, as at the starting ofthe motor. In connection with the foregoing there is used an equal-izing transformer which is wound for a 1
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