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