Figure 1. The general arrangement of a three phase waveform.
Well Pump Installation
Frame-mount Centrifugal Pumps
“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
Super T Series® Engine Driven
Close-Coupled Vertical Turbine
Ultra V Series® and UltraMate®
Model 411 Horizontal Split Case
Utah Lake Cascade Pump
Computer Numerical Control Machine (CNC) at Nickerson
380 Series Vertical Inline Pump with VFD
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
SF Series®
Nickerson Field Crew
Model 342A Single Stage End Suction
Schlumberger Pump Assembly
Computer Numerical Control Machine (CNC) at Nickerson
National Pump Vertical Turbine Pumps, API 610
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.
Horizontal Lathe
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Custom fabrication to a large part
Utah Lake Cascade Pump
Horizontal Lathe
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.
