Product categories

Product Categories

June 2007 Replacing Motor-Generator Sets

Publication Date: 2007
Article Link: Read Article


9973 in stock


SPECIAL NOTICE: Please check each course for verification of approval before purchasing.

This test is based on the article, Replacing Motor-Generator Sets with Modern Static DC Drives, published in the June 2007 issue and counts as 1 Contact Hour (0.1 CEU) of elevator-industry continuing education credit. Most courses 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, Oklahoma, Pennsylvania, Vermont, Virginia, Washington, West Virginia, Wisconsin.

Learning Objectives - After reading this article, you should have learned about:

  • the drawbacks of motor-generator sets.
  • the value of static DC drives.
  • considerations when replacing a motor-generator set with a digital DC drive.
  • input power considerations.
  • the issue of power-line distortion.
  • sizing criteria for transformers.
  • output power considerations.
  • ripple-filter recommendations and adjustments.
  • car-controller considerations in a modernization with a DC drive.
  • commissioning a DSD 412 DC elevator drive.
  • verification of motor data and wiring.>
  • motor field board setup.
  • recording motor data and encoder setup.
  • grounding considerations
  • power-up verification and advanced diagnostics.

Enrollment Procedures:

  1. If you do not already have an account on, you will need to create one. NOTE: the name of the person purchasing must be the same name as the person who will take the exam.
  2. For articles, click the "Read Article" tab above to download and study the article. For other courses, be sure to purchase the corresponding book.
  3. Include your full name when purchasing the exam.
  4. Follow the instructions on the purchase confirmation page to log in to the Online Testing Center.
  5. 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.

Author Bio

Related Products

Sign up for our Email Newsletter

Enter your email address to receive timely product alerts, special offers, discounts, and more.
Something went wrong. Please check your entries and try again.