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.
Close-Coupled Vertical Turbine
Impeller wear ring
Utah Lake Cascade Pump
Bowl wear ring
National Pump Vertical Turbine Pumps, API 610
Computer Numerical Control Machine (CNC) at Nickerson
Model 342A Single Stage End Suction
Machinist at Nickerson Company running a state-of-the-art CNC machine.
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
Horizontal Lathe
Gorman-Rupp SF Series® Submersible Solids-handling Pump
Frame-mount Centrifugal Pumps
Super T Series® Engine Driven
Submersible Turbine Pumps
Impeller wear ring
Vertical Turbine Pumps, Deep Well
Figure 1. The general arrangement of a three phase waveform.
Custom fabrication to a large part
Custom shapes cut from raw materials.
80 Series® Engine Driven
Model 411 Horizontal Split Case
Bowl wear ring
SF Series®
Ultra V Series® and UltraMate®
Schlumberger Pump Assembly
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
380 Series Vertical Inline Pump with VFD
Vertical Lathe
Horizontal Lathe
Nickerson Field Crew
Computer Numerical Control Machine (CNC) at Nickerson
Well Pump Installation
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.
