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.
Ultra V Series® and UltraMate®
Figure 1. The general arrangement of a three phase waveform.
Vertical Lathe
80 Series® Engine Driven
National Pump Vertical Turbine Pumps, API 610
3800 Series, Single Stage End Suction
Horizontal Lathe
Gorman-Rupp SF Series® Submersible Solids-handling Pump
Computer Numerical Control Machine (CNC) at Nickerson
Frame-mount Centrifugal Pumps
380 Series Vertical Inline Pump with VFD
Computer Numerical Control Machine (CNC) at Nickerson
Horizontal Lathe
Nickerson Field Crew
Utah Lake Cascade Pump
Utah Lake Cascade Pump
SF Series®
Vertical Turbine Pumps, Deep Well
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
Custom fabrication to a large part
Bowl wear ring
Machinist at Nickerson Company running a state-of-the-art CNC machine.
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.
Impeller wear ring
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Well Pump Installation
“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
