Figure 2. A simple sine wave with a period of 360Ā° and an amplitude of 1. In single phase power the x-intercepts are 180Ā° from each other. A full period is 360Ā°. 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.
National Pump Vertical Turbine Pumps, API 610
Gorman-Rupp SF SeriesĀ® Submersible Solids-handling Pump
Utah Lake Cascade Pump
Frame-mount Centrifugal Pumps
Schlumberger Pump Assembly
SF SeriesĀ®
3800 Series, Single Stage End Suction
Custom shapes cut from raw materials.
80 SeriesĀ® Engine Driven
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Horizontal Lathe
Horizontal Lathe
Impeller wear ring
Computer Numerical Control Machine (CNC) at Nickerson
Computer Numerical Control Machine (CNC) at Nickerson
380 Series Vertical Inline Pump with VFD
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Utah Lake Cascade Pump
Figure 3. Three phase power has three identical sine waves overlapping at an offset of 2Ļ/3 radians or 120Ā°. When one phase reaches an x-intercept or node the next phase is only 30Ā° and approximately 5.6 milliseconds from reaching its crest.
Well Pump Installation
Model 411 Horizontal Split Case
Close-Coupled Vertical Turbine
Vertical Lathe
Bowl wear ring
Custom fabrication to a large part
Figure 1. The general arrangement of a three phase waveform.
