Brake HP and Motor HP calculation/understanding - Pump ...
Feb 17, 2009· Power needed by the fluid. Pump_hydraulicHP = Q_cfs * 62.4 * SG * PumpDiffHead_ft / 550 Power needed by the pump. PumpBHP = pump_hydraulic_HP / Pump_Efficiency Delivered Motor Power (often called motor shaft power) must be greater or equal to your maximum PumpBHP, plus a small safety margin of 10 to 15%, often achieved by rounding up to the next commonly available standard …