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 318
ELECTRIC RAILWAYS 181 has its fulcrum at Its left-hand end, which is hinged on the upperend of a link which has its fixed point on the base of the switchgear. The right-hand end of the second lever is connected to a bar … Fig. 158. Switchboard of the St. Clair Tunnel Power Plant, Rear View from which hang the three switch rods. When the solenoid is ener-gized—which it is in this case by 125-volt direct current—the switchrods are pulled up. So far the apparatus described is merely a solenoid-operatedswitch. The one…
Electrical engineering
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