Pump Control

Brent Petring Blog, Jensen Water Resource Blog, Pump Stations

Many control options are available to system designers these days. We will discuss soft starts, variable-frequency drives, and multiple pump systems. Soft starters reduce the current inrush and therefore the startup torque for electric motor drives. The reduced torque and current help increase the life and reliability of the pump and motor and system components. The lower current increases the life of the motor windings. The reduced torque pulse improves the life of all of the mechanical components as well as reducing the pressure pulsation that can cause water hammer in the system. Variable Frequency Drives (VFD) The VFDs have …