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.
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Utah Lake Cascade Pump
380 Series Vertical Inline Pump with VFD
Impeller wear ring
Impeller wear ring
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Figure 1. The general arrangement of a three phase waveform.
80 Series® Engine Driven
Well Pump Installation
Vertical Lathe
“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
Vertical Turbine Pumps, Deep Well
Utah Lake Cascade Pump
Gorman-Rupp SF Series® Submersible Solids-handling Pump
Computer Numerical Control Machine (CNC) at Nickerson
Model 342A Single Stage End Suction
Bowl wear ring
Schlumberger Pump Assembly
Submersible Turbine Pumps
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.
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
SF Series®
Horizontal Lathe
Bowl wear ring
3800 Series, Single Stage End Suction
Computer Numerical Control Machine (CNC) at Nickerson
