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. . s back of the feederpanels so that all feeders candraw current from the busbars. Fig. 151 shows a rail-way switchboard with 7 feederpanels at the right; 4 genera-tor panels at the left; and inthe middle a panel with anammeter and recording watt-meter for measuring total out-put. In some s
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. . s back of the feederpanels so that all feeders candraw current from the busbars. Fig. 151 shows a rail-way switchboard with 7 feederpanels at the right; 4 genera-tor panels at the left; and inthe middle a panel with anammeter and recording watt-meter for measuring total out-put. In some stations two, oreven three, sets of bus bars are used, as it may be desired to operatedifferent parts of the system at different voltages or to feed a highervoltage to the longer lines than to those near the station. In such acase double-throw switches are provided for connecting feeders andgenerators to either set of bus bars. Alternating=Current Railway Switchboards. High-tension, differ from the boards principally in that theswitches proper are not on the faces of the panels. They may belocated directly behind the operating board or at some distanceaway. If the latter, they are remote-control switches. Alternating-current circuits are ordinarily broken under oil. A single Fig. 154. Single-Pole Westinghouse Type EElectrically-Operated Oil Circuit Breaker 275 178 ELECTRIC RAILWAYS electrically operated circuit breaker for remote control is shown inFig. 154. The switch proper is in the oil tank and its conductorsare brought through the porcelain bushings shown. The tank islowered in the figure and contacts are open showing operatingsolenoid and knife switch for signal lamps on the side of theframe. The switch is closed when the lever on top is depressed.
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Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthoramericantechnicalsoci, bookcentury1900, bookdecade1910
