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.
Bowl wear ring
380 Series Vertical Inline Pump with VFD
Utah Lake Cascade Pump
Model 411 Horizontal Split Case
Horizontal Lathe
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.
Horizontal Lathe
Utah Lake Cascade Pump
Vertical Lathe
Model 342A Single Stage End Suction
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Figure 1. The general arrangement of a three phase waveform.
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Gorman-Rupp SF Series® Submersible Solids-handling Pump
National Pump Vertical Turbine Pumps, API 610
Well Pump Installation
Nickerson Field Crew
Ultra V Series® and UltraMate®
Custom fabrication to a large part
Close-Coupled Vertical Turbine
Bowl wear ring
Frame-mount Centrifugal Pumps
3800 Series, Single Stage End Suction
Vertical Lathe
Vertical Turbine Pumps, Deep Well
Schlumberger Pump Assembly
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
