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. (1916)
American Technical Society · Chicago : American Technical Society · leaf 146
128 SWITCHBOARDS 31 up to 2400 volts. Such voltages naturally cause some radicalchanges in the switching equipment in order to make it safe to handle.When the first 1200-^•olt railways were built, the panels for con-trolling the generators and feeders were built very much the sameas had been the… … Fig. 25. Front and Rear Views of Panels for 1200-Volt Direct-Current Railway SwitchboardCourtesy of General Electric Company supplied with longer handles and with shields to prevent the operatorcoming into contact with the -switch blades; the instruments werebetter insulated; and the circuit…
Electrical engineering
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