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.
Impeller wear ring
3800 Series, Single Stage End Suction
Figure 1. The general arrangement of a three phase waveform.
Vertical Lathe
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.
Frame-mount Centrifugal Pumps
Utah Lake Cascade Pump
Schlumberger Pump Assembly
380 Series Vertical Inline Pump with VFD
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
Vertical Lathe
SF Series®
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Impeller wear ring
Well Pump Installation
“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
Horizontal Lathe
Submersible Turbine Pumps
Model 342A Single Stage End Suction
Gorman-Rupp SF Series® Submersible Solids-handling Pump
Computer Numerical Control Machine (CNC) at Nickerson
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Computer Numerical Control Machine (CNC) at Nickerson
