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