“NSF/ANSI 61.”Ā NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
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.
Vertical Turbine Pumps, Deep Well
Computer Numerical Control Machine (CNC) at Nickerson
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
Horizontal Lathe
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.
Model 342A Single Stage End Suction
Impeller wear ring
Vertical Lathe
80 SeriesĀ® Engine Driven
Bowl wear ring
Custom shapes cut from raw materials.
National Pump Vertical Turbine Pumps, API 610
Figure 1. The general arrangement of a three phase waveform.
Submersible Turbine Pumps
Impeller wear ring
Horizontal Lathe
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
