Gorman-Rupp SF Series® Submersible Solids-handling Pump
Figure 1. The general arrangement of a three phase waveform.
Schlumberger Pump Assembly
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
Horizontal Lathe
Well Pump Installation
National Pump Vertical Turbine Pumps, API 610
Model 411 Horizontal Split Case
Model 342A Single Stage End Suction
Impeller wear ring
Super T Series® Engine Driven
Vertical Lathe
Machinist at Nickerson Company running a state-of-the-art CNC machine.
3800 Series, Single Stage End Suction
Impeller wear ring
80 Series® Engine Driven
Horizontal Lathe
Vertical Turbine Pumps, Deep Well
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
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.
Nickerson Field Crew
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.
Computer Numerical Control Machine (CNC) at Nickerson
