. Cassier's magazine. I. E. E. at the Omaha meeting, in July, PIONEER WORK IN POWER TRANSMISSION 191 cator, a device which answered a some-what similar purpose was installed,consisting of a wattmeter on the low-pressure paralleling bus with currentcoil in one bus and shunt across theother two. This indicated cross-cur-rent, and was used in the adjustment offield charges. Transformers were each250 KW, 800 to 40,000 volts, starconnected at both high and low pres-sure, with neutrals grounded. Triple-pole air switches and four-footfuses formerly connected each bank of two-phase three-phase, ground
. Cassier's magazine. I. E. E. at the Omaha meeting, in July, PIONEER WORK IN POWER TRANSMISSION 191 cator, a device which answered a some-what similar purpose was installed,consisting of a wattmeter on the low-pressure paralleling bus with currentcoil in one bus and shunt across theother two. This indicated cross-cur-rent, and was used in the adjustment offield charges. Transformers were each250 KW, 800 to 40,000 volts, starconnected at both high and low pres-sure, with neutrals grounded. Triple-pole air switches and four-footfuses formerly connected each bank of two-phase three-phase, grounded neu-tral, for 220-volt, two-phase inductionmotors. The Provo-Eureka line, 42miles long, carries seven-strand alumi-nium cable equivalent to No. 4 Eureka-Mercur cross line, 28 mileslong, equivalent to No. 5 copper, wasadded to complete the triangle thusformed and permit cutting out either ofthe three sides without interruptingservice. The Logan plant was completed in1901, containing two 1000-KW, revolv-. THE MERCUR MILL, SUPPLIED WITH POWER FROM THE PROVO, UTAH, STATION, SHOWN ON PAGES I92AND I93. THE FIRST INDUSTRY OPERATED BY 40,000-VOLT POWER transformers with its transmission form of air switch, opening six feet,contained no metal except conductors,and was composed entirely of paraffinedwood and rawhide, without porcelain,glass or other insulator. Others weresliding frames carrying line insulators. During the first year of operation thetransmission comprised a single 32-mileline to one receiving point at Mercur,where the arrangement was similar tothat at the power house, save that tworeducing transformers were connected ing-field alternators, direct connected at400 revolutions to double discharge twinturbines under 212 feet head. Thisplant is connected with the Provo sys-tem by duplicate lines over 100 mileslong, passing the cities of Ogden andSalt Lake. The Provo and Loganplants are thus operated in unisonthrough nearly 200 miles of transmis-sion. Dis
Size: 1928px × 1296px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyork, booksubjec
