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