Machinist at Nickerson Company running a state-of-the-art CNC machine.
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.
Submersible Turbine Pumps
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Ultra V Series® and UltraMate®
Close-Coupled Vertical Turbine
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
“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
Model 342A Single Stage End Suction
Schlumberger Pump Assembly
Vertical Turbine Pumps, Deep Well
Vertical Lathe
National Pump Vertical Turbine Pumps, API 610
Custom fabrication to a large part
Figure 1. The general arrangement of a three phase waveform.
Nickerson Field Crew
SF Series®
Frame-mount Centrifugal Pumps
Gorman-Rupp SF Series® Submersible Solids-handling Pump
