This course is based on the article, Elevator Drives, Power Quality and Energy Savings, published in the December 2011 issue and counts as one contact hour (0.1 CEU) of elevator-industry continuing-education credit. Approved by: NAEC for CET, QEI Services and NAESA for QEI (A maximum of 0.2 CEU for online courses per annual renewal period can be applied towards maintenance of qualifications for certified inspectors.) and the states of Florida, Pennsylvania, Arkansas, Kentucky, Virginia and West Virginia.
Learning Objectives - After reading this article, you should have learned about:
- The basic components and operation of an elevator VFD and regenerative unit.
How AC elevator drives create current harmonics.- How current harmonics create voltage distortion and affect the operation of electrical equipment.
- How current harmonics can be reduced in elevator VFDs. The relative cost and performance of various harmonic mitigation and regenerative solutions
Enrollment Procedures:- Include your full name when purchasing the online course.
- Within 2 to 3 business days you will receive an email with the article and instructions for taking the exam.
- Study article.
- Use the provided online link, ID, and Password to login to the Online Testing Center.
- If you scored 80% or above you can immediately print your certificate of completion. If you score below 80% you will have up to two free retakes.