. The Street railway journal . rolof the fields of a battery of six alternators. With apparatusof this nature, manipulation becomes a simple matter and the operating devices and indicating instruments can beso located and centralized as to make the control of the cir-cuits an easy matter for a single operator. THE CONTROLLING PLATFORM The controlling platform is usually, though not essen-tially, located so as to give the operator a comprehensivesurvey of the entire station. The generator instruments arelocated at the front of the platform, and in some cases havebeen worked into ornamental stan
. The Street railway journal . rolof the fields of a battery of six alternators. With apparatusof this nature, manipulation becomes a simple matter and the operating devices and indicating instruments can beso located and centralized as to make the control of the cir-cuits an easy matter for a single operator. THE CONTROLLING PLATFORM The controlling platform is usually, though not essen-tially, located so as to give the operator a comprehensivesurvey of the entire station. The generator instruments arelocated at the front of the platform, and in some cases havebeen worked into ornamental stands, as illustrated in , these stands forming the supports for the platform rail-ing. At the back of the platform are placed the instrumentsfor the feeders and auxiliary circuits, generally. These in-struments are mounted on marble panels and combined intoa switchboard. The controlling switches and other operat-ing appliances are located in the central space of the plat-form. These controlling switches may be combined in a. FIG. 13.—FREQUENCY INDICATOR single bench board, an illustration of one being shown inFig. 9, or they may be arranged on separate stands, asshown in Fig. 10, each stand containing the control appli-ances for a single circuit. The writer prefers the latterarrangement, as it is simpler and less confusing to theoperator. There is not the possibility of a mistake in theselection of the proper control apparatus as there is in thecase on the bench board, where there is greater concentra-tion of apparatus. Both methods are common, however,and with proper attention and care on the part of the op-erator there is but slight opportunity for a serious mis-take. The apparatus for the exciter and station auxiliariesis usually hand operated and is arranged on panel switch-boards. It is best located in close proximity to the appa-ratus controlled. SPECIAL INSTRUMENTS AND APPARATUS The conditions of operation in these large installationshave brought many problems to th
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
