Gorman-Rupp SF Series® Submersible Solids-handling Pump
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.
Model 342A Single Stage End Suction
Model 411 Horizontal Split Case
Vertical Lathe
Super T Series® Engine Driven
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.
Frame-mount Centrifugal Pumps
Close-Coupled Vertical Turbine
National Pump Vertical Turbine Pumps, API 610
Figure 1. The general arrangement of a three phase waveform.
Bowl wear ring
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
380 Series Vertical Inline Pump with VFD
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Custom shapes cut from raw materials.
Bowl wear ring
Utah Lake Cascade Pump
Computer Numerical Control Machine (CNC) at Nickerson
Submersible Turbine Pumps
Computer Numerical Control Machine (CNC) at Nickerson
