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.
Gorman-Rupp SF Series® Submersible Solids-handling Pump
Custom fabrication to a large part
Impeller wear ring
Computer Numerical Control Machine (CNC) at Nickerson
Bowl wear ring
Vertical Lathe
Nickerson Field Crew
Frame-mount Centrifugal Pumps
380 Series Vertical Inline Pump with VFD
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
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.
SF Series®
Model 411 Horizontal Split Case
Horizontal Lathe
Model 342A Single Stage End Suction
Bowl wear ring
Schlumberger Pump Assembly
Utah Lake Cascade Pump
Impeller wear ring
Machinist at Nickerson Company running a state-of-the-art CNC machine.
