. American hydroelectric practice; a compilation of useful data and information on the design, construction and operation of hydroelectric systems, from the penstocks to distribution lines . in a ^ in. conduit instead of the five-conductor cables which would berequired when no buses are provided at the structure and which need 134in. conduits. The operating buses should be installed in conduits, withoutlet boxes at each oil switch. In the structure shown in Figs. 160 and 292 HYDROELECTRIC PRACTICE. 162 the control buses are installed in one 134 in. conduit, which is used atthe same time for mo
. American hydroelectric practice; a compilation of useful data and information on the design, construction and operation of hydroelectric systems, from the penstocks to distribution lines . in a ^ in. conduit instead of the five-conductor cables which would berequired when no buses are provided at the structure and which need 134in. conduits. The operating buses should be installed in conduits, withoutlet boxes at each oil switch. In the structure shown in Figs. 160 and 292 HYDROELECTRIC PRACTICE. 162 the control buses are installed in one 134 in. conduit, which is used atthe same time for mounting the operating relays. When current and potential transformers are installed in separate com-partments, holes should be left in the partition walls to accommodate con-duits for the secondaries between phases, and in case of potential trans-formers porcelain tubes should be provided for the primaries. Fiber conduitis being satisfactorily substituted in some cases for porcelain tubes. The shape and general design of bus structures will generally depend onthe following conditions: (1) Type of oil switches, current transformers,potential transformers and disconnecting switches; (2) whether discon-necting switches are installed on one side or both sides of the oil switch;(3) on the amount and direction of the available space—that is, the struc-ture may be made wide, long or high; (4) whether the cables leave the structure overhead orunderground; (5) ar-rangement of solenoidor motor mecha
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyorkmcgrawhillb
