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.
Close-Coupled Vertical Turbine
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
Computer Numerical Control Machine (CNC) at Nickerson
Horizontal Lathe
Frame-mount Centrifugal Pumps
Vertical Lathe
Bowl wear ring
Well Pump Installation
Model 411 Horizontal Split Case
Utah Lake Cascade Pump
“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
Figure 1. The general arrangement of a three phase waveform.
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
Horizontal Lathe
Custom shapes cut from raw materials.
80 Series® Engine Driven
Computer Numerical Control Machine (CNC) at Nickerson
