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