|PDH Online Course Description||PDH Units/
Learning Units (Hours)
Timothy O'Hearn, P.E.
Two-speed single winding variable torque motors are commonly used in process facilities on air coolers. These motors have two horsepower ratings, two speed ratings, and two full-load current ratings. Because the motor has a single winding the speed change is accomplished by changing the wiring configuration and the number of stator circuits. These changes are described in NEMA MG1. The application is described including recommendations for sizing the supply conductors for avoiding application problems. This course includes a multiple-choice quiz at the end, which is designed to enhance the understanding of course materials.
NY PE & PLS: You must choose courses that are technical in nature or related to matters of laws and ethics contributing to the health and welfare of the public. NY Board does not accept courses related to office management, risk management, leadership, marketing, accounting, financial planning, real estate, and basic CAD. Specific course topics that are on the borderline and are not acceptable by the NY Board have been noted under the course description on our website.
AIA Members: You must take the courses listed under the category "AIA/CES Registered Courses" if you want us to report your Learning Units (LUs) to AIA/CES. If you take courses not registered with AIA/CES, you need to report the earned Learning Units (not qualified for HSW credits) using Self Report Form provided by AIA/CES.