June 2010 Regenerative Elevator Drives: What, How and Why

SPECIAL NOTICE: Please check each course for verification of approval before purchasing. This test is based on the article, Regenerative Elevator Drives: What, How and Why published in the June 2010 issue and counts as 1 Contact Hour (0.1 CEU) towards recertification. Most courses are approved by NAEC for CET/CAT and NAESAI for QEI and in the following states: Alabama, Arkansas, Florida, Georgia, Illinois, Indiana, Kentucky, Maryland, Mississippi, Missouri, Montana, Oklahoma, Pennsylvania, Vermont, Virginia, Washington, West Virginia, Wisconsin. Learning Objectives - After reading this article, you should have learned about:

• How mechanical and electrical power are related
• How the cycling of an elevator affects the flow of energy
• How various motors and drives react to bidirectional energy flow
• How regeneration can lower energy costs
• Why safety concerns of regeneration need to be dispelled

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