. Electric railway journal . 3 Kotnry Sw. 21111 i UTAH SUBSTATION—-DIAGRAMMATIC LAYOUT OF HIGH-TENSION WIRING OF SUBSTATION arresters from the tap line. Westinghouse electrolyticlightning arresters for the three-phase ungrounded neu-tral system are mounted on a concrete base and fencedin. High-Tension Station Wiring Pin-type insulators, mounted on pipe work, supportthe incoming high-tension conductors which enter thebuilding through porcelain bushings. Immediately in-side are aluminum choke coils connected by 3/4-in. cop-per tubing to type GA hand-operated oil switches. sion bu
. Electric railway journal . 3 Kotnry Sw. 21111 i UTAH SUBSTATION—-DIAGRAMMATIC LAYOUT OF HIGH-TENSION WIRING OF SUBSTATION arresters from the tap line. Westinghouse electrolyticlightning arresters for the three-phase ungrounded neu-tral system are mounted on a concrete base and fencedin. High-Tension Station Wiring Pin-type insulators, mounted on pipe work, supportthe incoming high-tension conductors which enter thebuilding through porcelain bushings. Immediately in-side are aluminum choke coils connected by 3/4-in. cop-per tubing to type GA hand-operated oil switches. sion bus through Dossert connectors so that a defectivetransformer may be readily disconnected to permitoperation on open delta. Each transformer has threeseparate secondary windings, having a capacity of 75kva. each, one for each rotary. This arrangement pro-vides for the operation of any two rotaries in series onthe side. Adjusting taps are provided on the high-tension side so that full 460 volts low tension can al-ways be secured. Taps are also provided on the low-tension side for starting the rotaries. Use is made ofthe 300-volt tap in starting the rotaries as induction
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