. Electric railway journal . Fig. 1—Detroit Tunnel—Cross-Section of Tunnel and Longitudinal Section of East-Bound Track Diaphragms-H Steel Plate. ] ElxtrU By. Tuu r stations or sumps have been constructed. One is situated ateach portal, there is one at each shaft and the fifth is in thecenter of the subaqueous section. The pump motors range from [5 hp to 30 hp in size, and are-operated from the substation. An annunciator system, installedfor each sump, rings a bell and lights a red pilot lamp in thesubstation when the water in either sump reaches the high-water setting for the float equipment.
. Electric railway journal . Fig. 1—Detroit Tunnel—Cross-Section of Tunnel and Longitudinal Section of East-Bound Track Diaphragms-H Steel Plate. ] ElxtrU By. Tuu r stations or sumps have been constructed. One is situated ateach portal, there is one at each shaft and the fifth is in thecenter of the subaqueous section. The pump motors range from [5 hp to 30 hp in size, and are-operated from the substation. An annunciator system, installedfor each sump, rings a bell and lights a red pilot lamp in thesubstation when the water in either sump reaches the high-water setting for the float equipment. The bell alarm is cut 490-watt, series arc lamps. Each lamp is supported on acast-iron pole of neat design. This lighting system is fed fromthe constant-current transformers already mentioned. The motor-generator room of the substation is lighted by21 clusters of tungsten 40-watt lamps. Two of the clusters inthe center of the station are fed from the main storage batteryfor emergency lighting. The other clusters ar
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Keywords: ., bookcentury1900, bookdecade1900, bookidelectricrailway371911newy
