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.
3800 Series, Single Stage End Suction
Computer Numerical Control Machine (CNC) at Nickerson
Custom shapes cut from raw materials.
Frame-mount Centrifugal Pumps
Bowl wear ring
380 Series Vertical Inline Pump with VFD
Model 411 Horizontal Split Case
Horizontal Lathe
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Horizontal Lathe
Nickerson Field Crew
Bowl wear ring
Computer Numerical Control Machine (CNC) at Nickerson
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Utah Lake Cascade Pump
Vertical Turbine Pumps, Deep Well
Figure 1. The general arrangement of a three phase waveform.
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.
