. The Street railway journal . 142 STREET RAILWAY JOURNAL. [Vol. XVIIL No. 5. serve to drive llie exciters. They are run at 270 r. p. m.,and are capable of developing 85 effective horse-power ata pressure of 165 lbs. The entire steam engine plant was furnished by theItalian manufacturing company, Franco Fosi & Company,of Lugano. To each of the large steam engines mentioned above isdirectly coupled a three-phase alternator of the revolvingfield type, capable of giving a normal output of 750 kw,with non-inductive load, overload of 25 per cent for twohours and an instantaneous overload of 40 per
. The Street railway journal . 142 STREET RAILWAY JOURNAL. [Vol. XVIIL No. 5. serve to drive llie exciters. They are run at 270 r. p. m.,and are capable of developing 85 effective horse-power ata pressure of 165 lbs. The entire steam engine plant was furnished by theItalian manufacturing company, Franco Fosi & Company,of Lugano. To each of the large steam engines mentioned above isdirectly coupled a three-phase alternator of the revolvingfield type, capable of giving a normal output of 750 kw,with non-inductive load, overload of 25 per cent for twohours and an instantaneous overload of 40 per cent. Thefield winding is distributed over thirty-two spools, giving,at the normal speed of 94 r. p. m., a frequency of 25 cyclesper second. The armature is wound to generate 13,000volts directly. To each of the two vertical steam enginesis directly connected a six-pole direct-current generator of. INTERIOR OF SUB-STATION, PARABIAGA 75 kw normal output, and 125 volts, which are used as ex-citers. The high-tension conductors, which connect the gen-erator armatures to the switchboard, run underneath thefloor, supported on porcelain insulators. The switchboardis composed of nine panels, of which one is for the two ex-citers, three high-tension generator panels, one totalizer tomeasure the total output of the station, and four linepanels, that is, two panels for each of the duplicate trans-mission lines running to Gallarate and Parabiago. A lever-operated oil circuit-breaker for 13,000 volts is placed inthe circuit of each generator. No fuses of any kindhave been introduced into the high-tension guard the station against short-circuits, or over-loads from without, each out-going line panel isprovided with a lever-operated oil circuit-breaker,having attached an automatic overload device, whichtrips the circuit-breaker, opening the circuit whenthe current on the correspond
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Keywords: ., bookcentury1800, bookdecade1880, bookidstreetrailwa, bookyear1884
