Figure 1. The general arrangement of a three phase waveform.
Impeller wear ring
Model 411 Horizontal Split Case
Model 342A Single Stage End Suction
Gorman-Rupp SF Series® Submersible Solids-handling Pump
Horizontal Lathe
Utah Lake Cascade Pump
National Pump Vertical Turbine Pumps, API 610
Computer Numerical Control Machine (CNC) at Nickerson
Submersible Turbine Pumps
Bowl wear ring
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
SF Series®
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.
Utah Lake Cascade Pump
Computer Numerical Control Machine (CNC) at Nickerson
3800 Series, Single Stage End Suction
Schlumberger Pump Assembly
Nickerson Field Crew
Custom fabrication to a large part
Bowl wear ring
80 Series® Engine Driven
Machinist at Nickerson Company running a state-of-the-art CNC machine.
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.
Vertical Turbine Pumps, Deep Well
Vertical Lathe
Ultra V Series® and UltraMate®
“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
