“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
Super T Series® Engine Driven
Horizontal Lathe
Computer Numerical Control Machine (CNC) at Nickerson
Model 411 Horizontal Split Case
Figure 1. The general arrangement of a three phase waveform.
80 Series® Engine Driven
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Vertical Turbine Pumps, Deep Well
Submersible Turbine Pumps
Impeller wear ring
Well Pump Installation
3800 Series, Single Stage End Suction
Model 342A Single Stage End Suction
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.
Custom fabrication to a large part
Vertical Lathe
Bowl wear ring
Frame-mount Centrifugal 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.
