How do you calculate the power of a centrifugal pump?
Power is required by every machine, in order to move and work. Similarly, the centrifugal pump also requires power to move and increase the pressure of a fluid. This power depends on a number of factors, including the pump and motor efficiency, the differential pressure and the fluid density, as well as the viscosity and flow rate.
The power of a centrifugal pump can be calculated via the following 3-phase power equation:
P (in Hp) = VI(1.7c) = Rated Voltage x Rated Current x 1.73/ %Efficiency
Alternately, the power required to operate the pump should be stated in Hp (horsepower) on the pump's nameplate.