Gorman-Rupp SF Series® Submersible Solids-handling Pump
Horizontal Lathe
Computer Numerical Control Machine (CNC) at Nickerson
Close-Coupled Vertical Turbine
SF Series®
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.
Schlumberger Pump Assembly
Model 411 Horizontal Split Case
Figure 1. The general arrangement of a three phase waveform.
Frame-mount Centrifugal Pumps
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.
Horizontal Lathe
Impeller wear ring
Submersible Turbine Pumps
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Vertical Lathe
Custom shapes cut from raw materials.
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
Vertical Turbine Pumps, Deep Well
Computer Numerical Control Machine (CNC) at Nickerson
