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June 2007<BR>Replacing Motor-Generator Sets with Modern Static DC Drives<BR>1 Contact Hour (0.1 CEU)

This exam is based on the article Replacing Motor-Generator Sets with Modern Static DC Drives and counts as 1 Contact Hour (0.1 CEU) of elevator-industry continuing-education credit. Approved by: NAEC for CET and NAESA for QEI.

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 drives.
  • 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.

    Testing Procedures:

    Once the applicant has paid for the exam they will receive the article in PDF format by email. The test will be given online and will consist of 10 multiple choice questions.

    Enrollment Procedures:

    1. Register and pay online with a credit card.
    2. You will receive an email confirmation with the article and instructions for taking the exam.
    3. Study article.
    4. Use the provided online link, ID, and Password to login to the Online Testing Center.
    5. If you scored 80% or above, you will receive your one contact hour certificate of credit via email.

    Click here to view article.



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