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
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Impeller wear ring
Vertical Lathe
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.
Bowl wear ring
National Pump Vertical Turbine Pumps, API 610
Horizontal Lathe
“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
Figure 1. The general arrangement of a three phase waveform.
Close-Coupled Vertical Turbine
Ultra V Series® and UltraMate®
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Vertical Lathe
3800 Series, Single Stage End Suction
Bowl wear ring
Utah Lake Cascade Pump
Custom fabrication to a large part
Custom shapes cut from raw materials.
Computer Numerical Control Machine (CNC) at Nickerson
