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