SPECIAL NOTICE: Please check each course for verification of approval before purchasing.
This test is based on the article, Modern VVVF Drives, published in the February 2010 issue and counts as two contact hour (0.2 CEU) of elevator-industry continuing-education credit. Most courses are approved by NAEC for CET/CAT and NAESAI for QEI and in the following states: Alabama, Arkansas, Colorado, Florida, Georgia, Illinois, Indiana, Kentucky, Maryland, Mississippi, Missouri, Oklahoma, Pennsylvania, Vermont, Virginia, Washington, West Virginia, Wisconsin.
Learning Objectives - After reading this article, you should have learned:
- Types of VVVF drives
- The comparison of a VVVF inverter to a vector drive
- Power consumption of AC-VVVF drives
- The sizing of a drive
- Advantages of a DC drive unit
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- For articles, click the "Read Article" tab above to download and study the article. For other courses, be sure to purchase the corresponding book.
- Include your full name when purchasing the exam.
- Follow the instructions on the purchase confirmation page to log in to the Online Testing Center.
- If you scored 80% or above you can immediately print your certificate of completion. If you fail the exam, you will be given instructions on how to pay a re-take fee and take the exam again.
