Figure 1. The general arrangement of a three phase waveform.
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Utah Lake Cascade Pump
Vertical Lathe
3800 Series, Single Stage End Suction
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Vertical Lathe
Model 411 Horizontal Split Case
Utah Lake Cascade Pump
Horizontal Lathe
National Pump Vertical Turbine Pumps, API 610
Nickerson Field Crew
Submersible Turbine Pumps
SF Series®
Bowl wear ring
Computer Numerical Control Machine (CNC) at Nickerson
Vertical Turbine Pumps, Deep Well
Ultra V Series® and UltraMate®
Computer Numerical Control Machine (CNC) at Nickerson
380 Series Vertical Inline Pump with VFD
Schlumberger Pump Assembly
Frame-mount Centrifugal Pumps
Super T Series® Engine Driven
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.
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.
