. American engineer and railroad journal . beled for the startiny andlunniiig position, the special connections shown above being,of course, the starting position. No difhculty is experiencedin starting motors under full load by this system up to40 , and all the complication and extra cost of the com-pensators is avoided. The operation in multiple of the gener-ators is not affected by this simple arrangement of iuter-conne(-ting the phase windings, which also entailed no extraflrst cost in the generators. Two rotary convertors are provided for furnishingdirect current for the cran
. American engineer and railroad journal . beled for the startiny andlunniiig position, the special connections shown above being,of course, the starting position. No difhculty is experiencedin starting motors under full load by this system up to40 , and all the complication and extra cost of the com-pensators is avoided. The operation in multiple of the gener-ators is not affected by this simple arrangement of iuter-conne(-ting the phase windings, which also entailed no extraflrst cost in the generators. Two rotary convertors are provided for furnishingdirect current for the crane motors and the variable speedmotors used upon machine tools. The two machines run inparallel on the direct-current end, delivering 250 volts, andhavo an eiiualizer connection to the secondaries of the pair orwlatic transformers supplying the alternating current•side, by means of which is formed a three-wire system giving!:;.> anil 2.)0 volts. The sketch bolow shows the arrange- ■i I LLllHENT isu volts 4 ISO volts. flOll! ^1,>i i To Clinic ,>i-s. Varirflilc-Spced Mutot>,—^ Lit;litiii^. uto. .VHRANIiEMENT OF ROTARY CONVERTOR CONNECTIONS FOB TWO VOLTAGES. ment of connections for tliis service; the neutral wire of thethree-wire direct-current system leads directly from the neutralpoints of the secondary windings of the pair of motor ends of the converters are governed liy inductionregulators, by which the speed may be raised or lowered 5 percent, from normal. The direct current ends are compound-wound, having equalizer connections, and maintain the voltageconstant within 5 per cent, from no load to full load. Two independent switchboards are provided, one termedswitchboard A and the other switchboard B, as indicated onthe floor-plan drawing, page 183 of our Jlay, 1903, A controls all circuits leadng outside of thelocomotive shop yard so as to embrace overhead li
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
