. The street railway review . 189 less the synchronizing plug is in place and the synchronizing devicesrecord the condition of phase relation. None of the power house cables either high or low tension islead-covered. The varnished cambric insulation of the cables whichwere manufactured by the General Electric Co. is guaranteed to besufficient fur the working pressures adopted without the necessityof sheathing it witli a continuous waterproof covering of lead, un-der the conditions that prevail in this power station, the ducts being A very complete machine tool equipment is pre. facilitate ligh
. The street railway review . 189 less the synchronizing plug is in place and the synchronizing devicesrecord the condition of phase relation. None of the power house cables either high or low tension islead-covered. The varnished cambric insulation of the cables whichwere manufactured by the General Electric Co. is guaranteed to besufficient fur the working pressures adopted without the necessityof sheathing it witli a continuous waterproof covering of lead, un-der the conditions that prevail in this power station, the ducts being A very complete machine tool equipment is pre. facilitate lighl repairs. The space set apart for this machine shop is on thetop floor in the north side of the building directly over the electricaloperating gallery. A generous equipment of machinery is arrangedin two group- driven by a line shaft which extends over both groupsbut is subdivided at its center by a clutch coupling. Two 15-h. p.,type-C Westinghouse, 400-volt, three-phase induction motoicoupled 10 tliv -hill, one at each SECTIONAL ELEVATIONS OF ELECTRICAL GALLERIES. so constructed that there is no possibility of moisture collecting inany point of the duct system. The feeder cables leading to the high-tension transmission system are of the three-conductor type. Eachconductor is of c. m. cross section and is wrapped with alayer of paper insulation 7-32 in. thick. The three insulating strandswhen twisted into one cable are then surrounded with an additionalinsulating wrapping 7-32 in. thick and the interstices filled withjute. The whole is enclosed in lead sheath 9-64 in. thick. Afterinstallation, the cables successfully withstood the prescribed test of30,000 volts applied continuously for a period of four minutes. The general use of the distant control type of switch for the mainpower circuits, the auxiliary apparatus and lighting, required theinstallation of a large amount of control wiring between the switchesand the operating board, which was all run in loricated
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
