. The Street railway journal . FIG. AND EARS IOR VOLTS 792 STREET RAILWAY JOURNAL. [Vol. XXL No. 22. enior, which is of the centrifugal type, acts on a valve, whicheither connects the two cylinders of the controlling piston withthe oil reservoir or with the suction storage of the oil FIG. 15.—SPAN-WIRE CONSTRUCTION The three-phase generators, Fig. 8, supplied hy Schuckert, ofNuremberg, generate at a normal load, and a lag of phase ofcos , three-phase current of 1050 kw at 20,000 volts and 15 times that of the normal. The generators are designed to beable to stand
. The Street railway journal . FIG. AND EARS IOR VOLTS 792 STREET RAILWAY JOURNAL. [Vol. XXL No. 22. enior, which is of the centrifugal type, acts on a valve, whicheither connects the two cylinders of the controlling piston withthe oil reservoir or with the suction storage of the oil FIG. 15.—SPAN-WIRE CONSTRUCTION The three-phase generators, Fig. 8, supplied hy Schuckert, ofNuremberg, generate at a normal load, and a lag of phase ofcos , three-phase current of 1050 kw at 20,000 volts and 15 times that of the normal. The generators are designed to beable to stand a short circuit for 120 seconds without case of the turbine-governor failing to act the direct-coupled exciters areI ; provided with an automatic switch,which inserts theresistance in the ex-citer circuit whenthe turbines runaway, thus avoidinginjury from an in-crease in voltage inthe main arrangementprevents the voltageexceeding 2 5, o o ovolts, even if thenumber of revolu-tions should be 250per minute. Thisprovision was madenot so much to pro-tect the alternatoragainst injury as toavoid damage to theswitchboard appa-ratus from the highvoltage. The totalweight of the alter-nator is 153,000 lbs.,of which 97,000 the weight of the rotary part, including the shaft. The swit
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
