Figure 1. The general arrangement of a three phase waveform.
Frame-mount Centrifugal Pumps
Model 411 Horizontal Split Case
80 Series® Engine Driven
Schlumberger Pump Assembly
Vertical Lathe
Nickerson Field Crew
Vertical Lathe
Submersible Turbine Pumps
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
Custom shapes cut from raw materials.
3800 Series, Single Stage End Suction
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.
Computer Numerical Control Machine (CNC) at Nickerson
National Pump Vertical Turbine Pumps, API 610
Utah Lake Cascade Pump
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
Computer Numerical Control Machine (CNC) at Nickerson
Bowl wear ring
Horizontal Lathe
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
