Gorman-Rupp SF SeriesĀ® Submersible Solids-handling Pump
Impeller wear ring
Schlumberger Pump Assembly
SF SeriesĀ®
Close-Coupled Vertical Turbine
80 SeriesĀ® Engine Driven
Figure 1. The general arrangement of a three phase waveform.
Horizontal Lathe
Custom fabrication to a large part
380 Series Vertical Inline Pump with VFD
Model 342A Single Stage End Suction
Custom shapes cut from raw materials.
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Computer Numerical Control Machine (CNC) at Nickerson
Well Pump Installation
Computer Numerical Control Machine (CNC) at Nickerson
Figure 3. Three phase power has three identical sine waves overlapping at an offset of 2Ļ/3 radians or 120Ā°. When one phase reaches an x-intercept or node the next phase is only 30Ā° and approximately 5.6 milliseconds from reaching its crest.
Model 411 Horizontal Split Case
Horizontal Lathe
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Nickerson Field Crew
Bowl wear ring
3800 Series, Single Stage End Suction
Submersible Turbine Pumps
Figure 2. A simple sine wave with a period of 360Ā° and an amplitude of 1. In single phase power the x-intercepts are 180Ā° from each other. A full period is 360Ā°. 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.
Ultra V SeriesĀ® and UltraMateĀ®
“NSF/ANSI 61.”Ā NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
