JohnGierich

About JohnGierich

Owner/Administrator at Joliet Technologies, L.L.C.

Methods of Starting Electric Motors

In commercial and industrial applications, electric motors are essential for a wide range of machinery and equipment. The main methods for starting, running, and stopping these motors include direct-on-line (DOL) starters, star-delta starters, auto-transformer starters, soft starters, and variable frequency drives (VFDs). Here’s an overview of each method along with their advantages and disadvantages:

Direct-On-Line (DOL) Starters

Starting Method: The motor is connected directly to the power supply, allowing full voltage to be applied to the motor terminals.

Advantages:

  • Simplicity: Easy to install and operate.
  • Cost-effective: Low initial cost.
  • Full Torque: Provides full starting torque.

Disadvantages:

  • High Inrush Current: Causes a large surge in current, which can affect the power network and reduce the motor’s lifespan.
  • Mechanical Stress: Sudden application of full voltage can cause mechanical stress on the motor and the driven equipment.

Star-Delta Starters

Starting Method: The motor initially starts in a star (Y) configuration, reducing the voltage and current. After a brief period, it switches to a delta (Δ) configuration for normal operation.

Advantages:

  • Reduced Starting Current: Lower inrush current compared to DOL.
  • Less Mechanical Stress: Gradual increase in torque reduces mechanical stress.

Disadvantages:

  • Complexity: More complex than DOL, requiring additional components and wiring.
  • Torque Dip: Temporary reduction in torque during the transition from star […]
By |2024-05-22T09:05:34-05:00May 20th, 2024|0 Comments

We apologize

Today at approx. 1:03pm CST we sent about 30 old Blog posts to our email list. This was a mistake and we are sorry.

We updated our RSS Feed to include older posts and our email broadcast software perceived that the older posts were new posts and sent them to everyone.

Once again, we apologize.

Regards,
John Gierich
Administrator

By |2019-05-14T08:09:32-05:00February 21st, 2019|0 Comments

Joliet Technologies New & Improved Website

joliettech.com responsive design

January 14, 2015

Welcome to the new and improved Joliet Technologies website. This is the look of our new site.

We have converted it to a responsive site design, which means it will be viewable on all devices and the functionality and content will remain the same whatever device you are viewing it on.
It has always been our goal to have the user experience be the best possible on our website and hopefully this new design will do just that. Our new user interface allows you, in most cases and on most devices, to navigate to any page on our site with just one click.

Encryption Verification (Chrome).

Also we have increased the security of our site by switching to https, so whenever you are on our site anything you do is encrypted. Your connection to https://joliettech.com is encrypted with 256-bit encryption & the identity has been verified by COMODO RSA Domain Validation Secure Server CA.

All the content on our site […]

By |2023-05-04T16:06:14-05:00February 18th, 2015|0 Comments

Hello world!

January 14, 2015

We have completed the process of re-designing our website. This will be the new look of our new site.

We have converted it to a responsive site, which means it will be viewable on all devices and the functionality will remain the same whatever device you are viewing it on.

Also we have increased the security of our site by switching to https, so whenever you are on our site anything you do is encrypted.

All the content on our site should remain the same, some pages may be updated to reflect the current status of our company and our products and services.

If you have any questions and/or comments, please feel free to contact us directly at info@joliettech.com.

By |2020-05-07T10:55:28-05:00August 8th, 2014|1 Comment

Welcome to Joliet Technologies Blog

Joliet Technologies logo.

This blog is being presented by Joliet Technologies, L.L.C..

In addition to our regular website, we felt we needed a more casual place to air our views and feelings about what we do and the industry we are in. As you can see this is a very simple website.

If you have done any research at all into variable speed drives and variable frequency drives and controls, you probably have come across our website. It is our goal to provide the information you need to make intelligent decisions regarding variable speed drives and controls you use in your facilities.

It is our plan to post to this blog at least twice a month. The posts will be on a wide range of subjects. From information about our company and people that work here, to posts regarding our products and services.

John Gierich - Administrator

Regards,
John Gierich
Owner/Administrator

By |2022-10-21T15:05:05-05:00September 15th, 2011|0 Comments
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