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
National Pump Vertical Turbine Pumps, API 610
380 Series Vertical Inline Pump with VFD
Custom fabrication to a large part
Vertical Lathe
Custom shapes cut from raw materials.
Impeller wear ring
Bowl wear ring
Super T Series® Engine Driven
Computer Numerical Control Machine (CNC) at Nickerson
Model 342A Single Stage End Suction
80 Series® Engine Driven
Model 411 Horizontal Split Case
Computer Numerical Control Machine (CNC) at Nickerson
Utah Lake Cascade Pump
Parley’s Water Treatment Plant. Photo credit SLCdocs.com
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
Schlumberger Pump Assembly
Nickerson Field Crew
Close-Coupled Vertical Turbine
3800 Series, Single Stage End Suction
Well Pump Installation
Impeller wear ring
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.
Figure 1. The general arrangement of a three phase waveform.
Machinist at Nickerson Company running a state-of-the-art CNC machine.
