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.
Model 342A Single Stage End Suction
Utah Lake Cascade Pump
Vertical Turbine Pumps, Deep Well
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.
Well Pump Installation
Nickerson Field Crew
Impeller wear ring
Schlumberger Pump Assembly
Impeller wear ring
Figure 1. The general arrangement of a three phase waveform.
Vertical Lathe
Computer Numerical Control Machine (CNC) at Nickerson
Super T Series® Engine Driven
Close-Coupled Vertical Turbine
SF Series®
Frame-mount Centrifugal Pumps
Submersible Turbine Pumps
“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
Bowl wear ring
Utah Lake Cascade Pump
National Pump Vertical Turbine Pumps, API 610
Bowl wear ring
Custom shapes cut from raw materials.
380 Series Vertical Inline Pump with VFD
Model 411 Horizontal Split Case
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
