Document jyGpZ6peXE12ZYaGGykVR4oO2

+, The lit" jotced-drajl Jans at /Inn Cent are driven hr Elliott IJ5ti-hp, UUO-rprn motors. These motors anil the boiler-Jeerl /nim/i deices', all located oul-oj-doors, are built to withstand any kind of weather, from sandstorm to winter blizzard. former which is connected to one of the 138-kv transmission lines. When in normal operation, the plant re ceives auxiliary power from a 13,800- 2400-volt auxiliary power trans former connected directly to the main generator bus. A three-story brick control build ing allots its top floor to an air-condi- tiuned control room with tinted thcr- mopane windows for glare preven tion. This room is the nerve center of the plant and from this location the operators control the equipment and the switching of load on the out going lines. An air-conditioned brick service building provides olliccs for the oper ating personnel, an assembly room, a locker and wash room, and a lab the rate of 69,000 pm. It is returned cssary to start up the plant in the oratory with the latest testing equip by canal to the opposite side of the beginning and again alter it has ment. A 40- by 100-foot steel frame, lake. Water for the lake is pumped from the Sulphur River by two 10.000-gpm pumps. Electricity is generated at the plant been shut down for overhaul or inspection. This start-up power is supplied through a 15.000-kva, 138,000 66,000-2400-volt. 3-phase trans aluminum-covered building houses a storeroom and a complete machine shop for repairing and maintaining equipment. at 13,800 volts and increased, to 138,000 volts by two 63,000-kva, 3- phase power transformers operating in parallel. The 138-kv electricity is fed through an oil circuit breaker to the switchyard, which in turn is con nected to the transmission system by two 138-kv transmission lines con structed of 636,400 circular mil con ductor. Since the River Crest station is a single-unit plant and the gen <5^ erator is connected to the system through high-voltage switches, an auxiliary source of power was nec lt right, two Elliott C- IT, 100-hp, 1200-rpm motors drive air compressors. There are also two 15-hp, Scaledpower molars driving water-treating pumps. PWERFAX, SUMMER 1955 T9