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 342A Single Stage End Suction
Utah Lake Cascade Pump
Computer Numerical Control Machine (CNC) at Nickerson
Ultra V SeriesĀ® and UltraMateĀ®
Bowl wear ring
National Pump Vertical Turbine Pumps, API 610
Close-Coupled Vertical Turbine
Figure 1. The general arrangement of a three phase waveform.
Super T SeriesĀ® Engine Driven
Impeller wear ring
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
Horizontal Lathe
Computer Numerical Control Machine (CNC) at Nickerson
Bowl wear ring
“NSF/ANSI 61.”Ā NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
SF SeriesĀ®
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.
