International Library of Technology · Scranton, International Textbook Co. · leaf 146
r service,as shown in the figure, the main current passes from C tothe curved copper bridge D D and out to the line againthrough the heavy block E^ which has a terminal like A in 20 ELECTRIC RAILWAYS. 57 the rear. When the breaker is closed, the hinged iron arma-ture F is held up by a spring 6, the… … Fig. 23. bears. To set the breaker, the main handle L is pulleddown hard; this forces /?/? up against blocks C and E, andalso causes the projection on K to engage trigger H, whichholds the circuit-breaking parts in place. In setting theswitch, spring M is extended. Now, suppose the current togo…
Electrical engineering
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