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