Accession Number : AD0428480


Title :   PERFORMANCE TESTS OF THE PUMP, DRIVE MOTOR, AND SPEED CONTROLS FOR THE LABORATORY 8-INCH HIGHHEAD TEST FACILITIES -- HYDRAULICS BRANCH, DENVER,


Corporate Author : BUREAU OF RECLAMATION DENVER COLO HYDRAULICS BRANCH


Personal Author(s) : Simmons,W P


Report Date : 31 Oct 1963


Pagination or Media Count : 12


Abstract : The minimum design requirement of 1,800 gallons per minute at a 400-foot head with a pump speed of 1,800 rpm was easily exceeded. The pump capacity at the rated speed was found to be 1,997 gallons per minute at the 400-foot head. The overall efficiency, based on total electrical input to the power supply and the water horsepower output of the pump, was 68.5 percent. This exceeds the 68.0% requirement of the specifications. The speed regulation at any constant pump load setting was within plus or minus 3 rpm of the set speed. Changes in electrical load produced by turning on and turning off other large motors in the building did not affect the speed control. A speed deviation not to exceed plus or minus 13.5 rpm was required. The speed control selector was simple to operate, stable, and sufficiently sensitive to permit speed changes as small as 3 or 4 rpm. The pump discharge was relatively steady and no difficulty was encountered in measuring the rates of flow. The motor and pump operated smoothly and almost vibrationlessly. The noise level near the 250-horsepower drive motor was higher than desirable, but not excessive. (Author)


Descriptors :   *HYDRAULIC PRESSURE PUMPS , PERFORMANCE(ENGINEERING) , INSTRUMENTATION , ELECTRIC MOTORS , SPEED REGULATORS , POWER SUPPLIES , TEST FACILITIES , CENTRIFUGAL PUMPS


Distribution Statement : APPROVED FOR PUBLIC RELEASE