Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. . Fig. 71. Group of Unit Switches, Westinghouse System is cut off and the air in the cylinder is allowed to escape. The switchis theu opened by the spring. The arc is broken in a magnetic fieldproduced by a magnet the end of which is shown dotted in thefigure. Fig. 68 is a picture of the un
Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. . Fig. 71. Group of Unit Switches, Westinghouse System is cut off and the air in the cylinder is allowed to escape. The switchis theu opened by the spring. The arc is broken in a magnetic fieldproduced by a magnet the end of which is shown dotted in thefigure. Fig. 68 is a picture of the unit switch with the sides of thebox, the arc shute, the cylinder, and the valve cut away to show the 165. ^ S! a ^ f^ ^^ ^ ^ ^ • • • 10 • • • • • • • • • • • • ^ • • • Q. • • • ID • • • • ^ • • • • • • • • • • • • • • • • - CVJ K> ^1- IT) ^ N <D Ol 166 ELECTRIC RAILWAYS 71 working parts. Figs. 67 and 68, taken together, should give a clearidea of the operation of the valve. An enlarged view of the cylinderand magnet valve in Fig. 68 is given in Fig. 69. Details of the blow-out coil are shown in Fig. 70. The appearance of the switch groupis given in Fig. 7L Control and Motor Circuits. The control and motor circuitsare shown in simplified form in Fig. 72. The main circuits are inthe upper left-hand corner and the control circuits are in the lowerright-hand corner. In the lower left-hand corner is a table showingthe sequence of switches corresponding to the several series andparallel positions. For simplicity, in the diagram the operating iQALVANIZtD Q t^/J)- OBSTPAIMff CUT OUT cocn ! i TO BRAKt?i I APP
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Keywords: ., bookauthoramericantechnicalsoci, bookcentury1900, bookdecade1910
