Figure 2. A simple sine wave with a period of 360° and an amplitude of 1. In single phase power the x-intercepts are 180° from each other. A full period is 360°. 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.
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Utah Lake Cascade Pump
Bowl wear ring
Computer Numerical Control Machine (CNC) at Nickerson
Computer Numerical Control Machine (CNC) at Nickerson
Custom shapes cut from raw materials.
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Frame-mount Centrifugal Pumps
Figure 1. The general arrangement of a three phase waveform.
Model 342A Single Stage End Suction
Bowl wear ring
Submersible Turbine Pumps
Gorman-Rupp SF Series® Submersible Solids-handling Pump
Model 411 Horizontal Split Case
Figure 3. Three phase power has three identical sine waves overlapping at an offset of 2π/3 radians or 120°. When one phase reaches an x-intercept or node the next phase is only 30° and approximately 5.6 milliseconds from reaching its crest.
