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