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.
Utah Lake Cascade Pump
380 Series Vertical Inline Pump with VFD
Well Pump Installation
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Submersible Turbine Pumps
Impeller wear ring
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.
SF Series®
Computer Numerical Control Machine (CNC) at Nickerson
Ultra V Series® and UltraMate®
National Pump Vertical Turbine Pumps, API 610
Frame-mount Centrifugal Pumps
Utah Lake Cascade Pump
Computer Numerical Control Machine (CNC) at Nickerson
80 Series® Engine Driven
Vertical Lathe
“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.
Gorman-Rupp SF Series® Submersible Solids-handling Pump
Close-Coupled Vertical Turbine
Impeller wear ring
Schlumberger Pump Assembly
Vertical Turbine Pumps, Deep Well
Horizontal Lathe
Horizontal Lathe
Bowl wear ring
Custom shapes cut from raw materials.
Vertical Lathe
Super T Series® Engine Driven
Bowl wear ring
Nickerson Field Crew
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.
