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