. The Street railway journal . of 1100 to 6600 volts and currents of 200 to 300 amps. It is a single-throw circuit breaker and isadapted for mounting in manholes, the case being of castiron with water-tight, wiped joints. All parts of the circuitbreaker are enclosed within the case, yet are convenient ofaccess. The operating mechanism, line connections, cali-bration, etc., may beexposed to view byremoving the top ofthe case. The leadsconnecting to the sta-tionary terminals arcshown, also the open-ing through w hi chthe outside connec-tions pass, with anextra one on oneside for the leads tothe


. The Street railway journal . of 1100 to 6600 volts and currents of 200 to 300 amps. It is a single-throw circuit breaker and isadapted for mounting in manholes, the case being of castiron with water-tight, wiped joints. All parts of the circuitbreaker are enclosed within the case, yet are convenient ofaccess. The operating mechanism, line connections, cali-bration, etc., may beexposed to view byremoving the top ofthe case. The leadsconnecting to the sta-tionary terminals arcshown, also the open-ing through w hi chthe outside connec-tions pass, with anextra one on oneside for the leads tothe solenoids bywhich the circuitbreaker is electricallyoperated. The oil tank ofthis breaker is boltedto the upper part ofthe case and can bereadily removed toallow an inspectionof the tank is lined withwood and the con-tacts have wooden barriers between them. Fresh oil can lie poured into thetank, without opening the case, through the tube shown,which extends through the top of the case and is closed bya screw FTG. 3.—EXTERIOR OF BRIDGECIRCUIT BREAKER


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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884