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.
Utah Lake Cascade Pump
Well Pump Installation
Vertical Lathe
Horizontal Lathe
Model 342A Single Stage End Suction
Computer Numerical Control Machine (CNC) at Nickerson
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
380 Series Vertical Inline Pump with VFD
Impeller wear ring
Bowl wear ring
Vertical Turbine Pumps, Deep Well
80 Series® Engine Driven
Horizontal Lathe
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Close-Coupled Vertical Turbine
Nickerson Field Crew
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.
Model 411 Horizontal Split Case
3800 Series, Single Stage End Suction
Ultra V Series® and UltraMate®
SF Series®
Submersible Turbine Pumps
Gorman-Rupp SF Series® Submersible Solids-handling Pump
