“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
Horizontal Lathe
Ultra V Series® and UltraMate®
Bowl wear ring
Impeller wear ring
380 Series Vertical Inline Pump with VFD
Figure 1. The general arrangement of a three phase waveform.
Computer Numerical Control Machine (CNC) at Nickerson
Vertical Turbine Pumps, Deep Well
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
SF Series®
Impeller wear ring
Horizontal Lathe
Custom shapes cut from raw materials.
Vertical Lathe
Schlumberger Pump Assembly
Computer Numerical Control Machine (CNC) at Nickerson
Frame-mount Centrifugal Pumps
Gorman-Rupp SF Series® Submersible Solids-handling Pump
Model 411 Horizontal Split Case
Submersible Turbine Pumps
Super T Series® Engine Driven
Vertical Lathe
3800 Series, Single Stage End Suction
Utah Lake Cascade Pump
National Pump Vertical Turbine Pumps, API 610
Nickerson Field Crew
Utah Lake Cascade Pump
Bowl wear ring
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.
Close-Coupled Vertical Turbine
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.
