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
Horizontal Lathe
Computer Numerical Control Machine (CNC) at Nickerson
Vertical Lathe
Impeller wear ring
Vertical Lathe
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
80 Series® Engine Driven
Well Pump Installation
Nickerson Field Crew
Figure 1. The general arrangement of a three phase waveform.
Custom shapes cut from raw materials.
Computer Numerical Control Machine (CNC) at Nickerson
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Frame-mount Centrifugal Pumps
Model 411 Horizontal Split Case
Bowl wear ring
Impeller wear ring
380 Series Vertical Inline Pump with VFD
National Pump Vertical Turbine Pumps, API 610
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
