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.
Figure 1. The general arrangement of a three phase waveform.
Computer Numerical Control Machine (CNC) at Nickerson
SF Series®
Close-Coupled Vertical Turbine
Well Pump Installation
Gorman-Rupp SF Series® Submersible Solids-handling Pump
Frame-mount Centrifugal Pumps
Model 411 Horizontal Split Case
“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
Submersible Turbine Pumps
Utah Lake Cascade Pump
Horizontal Lathe
Nickerson Field Crew
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Computer Numerical Control Machine (CNC) at Nickerson
80 Series® Engine Driven
Super T Series® Engine Driven
National Pump Vertical Turbine Pumps, API 610
3800 Series, Single Stage End Suction
Horizontal Lathe
380 Series Vertical Inline Pump with VFD
Vertical Lathe
Bowl wear ring
Vertical Lathe
Horizontal Lathe
Schlumberger Pump Assembly
Impeller wear ring
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.
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Utah Lake Cascade Pump
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
