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.
3800 Series, Single Stage End Suction
Bowl wear ring
Well Pump Installation
Horizontal Lathe
Gorman-Rupp SF Series® Submersible Solids-handling Pump
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
National Pump Vertical Turbine Pumps, API 610
“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
Super T Series® Engine Driven
Custom shapes cut from raw materials.
Impeller wear ring
Ultra V Series® and UltraMate®
Impeller wear ring
Computer Numerical Control Machine (CNC) at Nickerson
Close-Coupled Vertical Turbine
Vertical Turbine Pumps, Deep Well
Model 342A Single Stage End Suction
Model 411 Horizontal Split Case
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.
Horizontal Lathe
Vertical Lathe
SF Series®
Figure 1. The general arrangement of a three phase waveform.
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
Frame-mount Centrifugal Pumps
380 Series Vertical Inline Pump with VFD
Horizontal Lathe
Computer Numerical Control Machine (CNC) at Nickerson
Machinist at Nickerson Company running a state-of-the-art CNC machine.
