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