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How to schedule

To schedule private education for your group, contact:

Dale Shuter, CMP
Meetings & Expositions Manager

+1 314 993 2220, ext. 3335
dshuter@easa.com

1 hour of training

$300 for EASA Chapters/Regions
$400 for member companies
$800 for non-members

How a webinar works

All EASA private webinars are live events in which the audio and video are streamed to your computer over the Internet. Prior to the program, you will receive a web link to join the meeting. 

The presentation portion of the webinar will last about 45 minutes, followed by about 15 minutes of questions and answers.

Requirements

  • Internet connection
  • Computer with audio input (microphone) and audio output (speakers) appropriate for your size group
  • TV or projector/screen

Zoom logo

The Zoom webinar service EASA uses will ask to install a small plugin. Your computer must be configured to allow this in order to have full functionality. Please check with your IT department or company's security policy prior to scheduling a private webinar.

Private Webinars

EASA's private webinars are an inexpensive way to bring an EASA engineer into your service center, place of business or group meeting without incurring travel expenses or lost production time.

Article

Replacing vintage variable speed drives with VFDs

  • April 2004
  • Number of views: 3478
  • Article rating:

Jim McKee (deceased)
Alabama Electric Motor Service

The ability to vary the speed of our prime movers has always been desirable. Electric motors are no exception. Many designs and types of motors have been developed over the years to fill this need for variable speed. The most widely used and successful designs include the direct current motor, eddy current coupling/ motor combination, three-phase shunt commutator motor (brush shifting or Schrage motor), and various mechanically variable devices such as adjustable pitch pulleys and cone/ wheel combinations.

EASA service centers often find it desirable or necessary to replace one of these vintage variable speed devices. There are many reasons for replacing older drives; they include improved efficiency, unavailability of repair parts and high maintenance costs. 

A properly sized Variable Frequency Drive (VFD) /three-phase induction motor combination is often the right choice for the new drive.

Available Downloads



Categories: Drives/controls
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