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.
“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
Schlumberger Pump Assembly
Horizontal Lathe
SF Series®
80 Series® Engine Driven
Impeller wear ring
Vertical Lathe
Ultra V Series® and UltraMate®
Well Pump Installation
Utah Lake Cascade Pump
Impeller wear ring
Computer Numerical Control Machine (CNC) at Nickerson
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Model 342A Single Stage End Suction
3800 Series, Single Stage End Suction
Nickerson Field Crew
National Pump Vertical Turbine Pumps, API 610
Figure 1. The general arrangement of a three phase waveform.
380 Series Vertical Inline Pump with VFD
Frame-mount Centrifugal Pumps
Bowl wear ring
Submersible Turbine Pumps
Custom shapes cut from raw materials.
Super T Series® Engine Driven
Model 411 Horizontal Split Case
Horizontal Lathe
Vertical Turbine Pumps, Deep Well
Bowl wear ring
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
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.
Close-Coupled Vertical Turbine
Vertical Lathe
Computer Numerical Control Machine (CNC) at Nickerson
Utah Lake Cascade Pump
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Gorman-Rupp SF Series® Submersible Solids-handling Pump
