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.
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.
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.
Super T Series® Engine Driven
Model 342A Single Stage End Suction
Vertical Lathe
Schlumberger Pump Assembly
Impeller wear ring
Impeller wear ring
Well Pump Installation
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Vertical Turbine Pumps, Deep Well
80 Series® Engine Driven
Nickerson Field Crew
Utah Lake Cascade Pump
Computer Numerical Control Machine (CNC) at Nickerson
Horizontal Lathe
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
Ultra V Series® and UltraMate®
Utah Lake Cascade Pump
3800 Series, Single Stage End Suction
National Pump Vertical Turbine Pumps, API 610
SF Series®
Bowl wear ring
Bowl wear ring
Frame-mount Centrifugal Pumps
Figure 1. The general arrangement of a three phase waveform.
