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.
Computer Numerical Control Machine (CNC) at Nickerson
Gorman-Rupp SF Series® Submersible Solids-handling Pump
3800 Series, Single Stage End Suction
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Horizontal Lathe
Computer Numerical Control Machine (CNC) at Nickerson
Custom fabrication to a large part
Frame-mount Centrifugal Pumps
Impeller wear ring
Well Pump Installation
“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
Utah Lake Cascade Pump
Model 411 Horizontal Split Case
National Pump Vertical Turbine Pumps, API 610
Vertical Lathe
Close-Coupled Vertical Turbine
Schlumberger Pump Assembly
Impeller wear ring
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.
