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.
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Vertical Lathe
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Computer Numerical Control Machine (CNC) at Nickerson
Impeller wear ring
Close-Coupled Vertical Turbine
Ultra V Series® and UltraMate®
“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
Gorman-Rupp SF Series® Submersible Solids-handling Pump
Impeller wear ring
Submersible Turbine Pumps
Utah Lake Cascade Pump
Vertical Turbine Pumps, Deep Well
Vertical Lathe
Super T Series® Engine Driven
3800 Series, Single Stage End Suction
Frame-mount Centrifugal Pumps
Model 411 Horizontal Split Case
80 Series® Engine Driven
Figure 1. The general arrangement of a three phase waveform.
380 Series Vertical Inline Pump with VFD
Computer Numerical Control Machine (CNC) at Nickerson
Horizontal Lathe
Bowl wear ring
Custom shapes cut from raw materials.
Utah Lake Cascade Pump
National Pump Vertical Turbine Pumps, API 610
Model 342A Single Stage End Suction
Schlumberger Pump Assembly
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
Well Pump Installation
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.
