Spruce Falls (Saskatchewan) facts for kids
The Swan River, about 6 kilometres (3.7 mi) in length, is the outlet channel from Birch Lake into Sisipuk (Duck) Lake. The water eventually flows into the Churchill River. It has a drainage area of 1,800 square kilometres (700 sq mi) consisting of a number of lakes, chief among which are Mari Lake, 49 square kilometres (19 sq mi), Barrier Lake, 140 square kilometres (55 sq mi), and Birch Burntwood Lake, 41 square kilometres (16 sq mi).
The Spruce Falls temporary powerhouse was a frame building on the shore of Sisipuk Lake. It contained two small generating units and complementary equipment. These two 930-kilowatt (1,250 hp) vertical-type turbines, with propeller-type runners, were directly connected to 1,000 kV⋅A generators delivering power at 600 volts, 3 phase, 60 cycles to a bank of transformers.
The transformer bank was placed apart from the power-house and protected by a lightning arrester and fuses. Rated at 2,000 kV⋅A, these transformers stepped the voltage up to 26,400 volts for transmission to Island Falls. There, a sub-station stepped the current down to 600 volts for two motor-generator sets which supplied current for the electric locomotives used in hauling earth, concrete and other construction materials.
Completion of the project
Work on the temporary power plant was started on October 4, 1928. Its operation began on March 20, 1929, and continued without interruption until No. 1 Unit at Island Falls took up the load on June 5, 1930. Subsequently, the Spruce Falls plant was dismantled, and, under very difficult freighting conditions due to snow and weak ice, the two small generating units were brought to Island Falls, where they were permanently installed in 1933.
During the period of operation this plant supplied 4,698,000 kWh of electrical energy for construction purposes, at an average cost of 4.35 cents per kilowatt-hour.
Spruce Falls (Saskatchewan) Facts for Kids. Kiddle Encyclopedia.