Figure 1. The general arrangement of a three phase waveform.
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Submersible Turbine Pumps
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
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.
National Pump Vertical Turbine Pumps, API 610
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.
Schlumberger Pump Assembly
Computer Numerical Control Machine (CNC) at Nickerson
Model 342A Single Stage End Suction
380 Series Vertical Inline Pump with VFD
Horizontal Lathe
Horizontal Lathe
Vertical Lathe
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Close-Coupled Vertical Turbine
Bowl wear ring
Nickerson Field Crew
“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
