Figure 2. A simple sine wave with a period of 360Ā° and an amplitude of 1. In single phase power the x-intercepts are 180Ā° from each other. A full period is 360Ā°. A single phase motor has a crest approximately every 16.5 milliseconds giving the motors a tendency to vibrate more, which may contribute to a shortened bearing life.
Nickerson Field Crew
Model 342A Single Stage End Suction
Computer Numerical Control Machine (CNC) at Nickerson
Submersible Turbine Pumps
Custom shapes cut from raw materials.
Bowl wear ring
Machinist at Nickerson Company running a state-of-the-art CNC machine.
National Pump Vertical Turbine Pumps, API 610
Gorman-Rupp SF SeriesĀ® Submersible Solids-handling Pump
Computer Numerical Control Machine (CNC) at Nickerson
Close-Coupled Vertical Turbine
Model 411 Horizontal Split Case
Figure 3. Three phase power has three identical sine waves overlapping at an offset of 2Ļ/3 radians or 120Ā°. When one phase reaches an x-intercept or node the next phase is only 30Ā° and approximately 5.6 milliseconds from reaching its crest.
