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.
Bowl wear ring
Vertical Turbine Pumps, Deep Well
Utah Lake Cascade Pump
Custom shapes cut from raw materials.
Close-Coupled Vertical Turbine
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Bowl wear ring
Machinist at Nickerson Company running a state-of-the-art CNC machine.
National Pump Vertical Turbine Pumps, API 610
Super T Series® Engine Driven
Nickerson Field Crew
Horizontal Lathe
Custom fabrication to a large part
380 Series Vertical Inline Pump with VFD
Gorman-Rupp SF Series® Submersible Solids-handling Pump
Figure 1. The general arrangement of a three phase waveform.
Model 342A Single Stage End Suction
SF Series®
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.
“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
Computer Numerical Control Machine (CNC) at Nickerson
Utah Lake Cascade Pump
Schlumberger Pump Assembly
3800 Series, Single Stage End Suction
Computer Numerical Control Machine (CNC) at Nickerson
