Welcome to Tech Corner – A Weekly Feature Article About Transformer Testing & Maintenance

Every week we are going to have a short teaser that may take you all of about thirty seconds to read. If the topic is of interest to you, you can click on a link that will take you deeper into our website for a two or three minute presentation that will give you some additional insight into the topic we are presenting that week. We will also identify some sources of further information for you in case you want to follow up on the topic further. We have plans to include both some stand-alone topics, each to be addressed by one weekly entry, as well as some “multi-parters” that may take a few weeks for us to present more completely.

We are going to start out with those topics that we think you will be interested in. That probably will prove to be valuable, since we talk to so many of you regularly. This feature will be even more worthwhile, though, if you get a chance to suggest topics of interest. If there is something that interests you, particularly if you feel it might also be of interest to others, please fill out the simple form below. It should only take you a minute or two. We will do the rest, and we will keep your contribution anonymous.

We are going to do our best to keep it entertaining and informative, but brief. We expect that it won’t be very long before you start making this a regular weekly stop.

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This Week's Tech Corner:

02-19-2010 – Hot Oil Cleaning and Life Extension

In last week’s article, we introduced hot oil cleaning. In this week’s article, we will carry this discussion further by relating how this maintenance activity extends the life of a transformer that has been hot oil cleaned… (Read more...)

Archives:

01-22-2010 – Hot Oil Cleaning
01-01-2010 – Routine and Non-routine Sampling Intervals

Dielectric Breakdown Voltage Testing:

12-30-2009 – Dielectric Breakdown Voltage Testing – IEC 60156 for New and In-service Mineral Insulating Oil
12-18-2009 – Dielectric Breakdown Voltage Testing – ASTM D1816 for New Insulating Liquids
11-06-2009 – Dielectric Breakdown Voltage Testing – ASTM D1816 for In-service Insulating Liquids - What We Do With a Failed Test
10-30-2009 – Dielectric Breakdown Voltage Testing – ASTM D1816 for In-service Insulating Liquids – The Fundamentals
10-23-2009 – Dielectric Breakdown Voltage Testing – ASTM D1816 for In-service Insulating Liquids - The History
10.16.2009 – Dielectric Breakdown Voltage Testing – ASTM D877
10-09-2009 – Dielectric Breakdown Voltage Testing – Standard Methods

Load Tap Changers:

09-25-2009 – Testing Insulating Liquids Using Particles Analysis – The Last Chapter (For Now, Anyway)
09-18-2009 – Testing Insulating Liquids Using Particles Analysis – Other Equipment Types
09-11-2009 – Testing Insulating Liquids in Load Tap Changers – Analytical Ferrography
08-28-2009 – Testing Insulating Liquids in Load Tap Changers – Particle Count Distribution
08-21-2009 – Testing Insulating Liquids in Load Tap Changers – Liquid screen tests, moisture content, and dissolved gas analysis
08-14-2009 – Testing Insulating Liquids in Load Tap Changers – What causes accelerated filming in an LTC?
08-07-2009 – Testing Insulating Liquids in Load Tap Changers – How does oil age in an LTC?
07-24-2009 – Will Changing Oil Solve an Acid Problem?

Liquid Power Factor:

07-17-2009 – Testing for Liquid Power Factor in Mineral Insulating Oil – Applications
07-10-2009 – Testing for Liquid Power Factor in Mineral Insulating Oil – Acceptable, Questionable, and Unacceptable Values
07-03-2009 – Testing for Liquid Power Factor in Mineral Insulating Oil – Introduction

Furanic Compounds:

06-26-2009 – Testing for Furanic Compounds in Insulating Liquids – One final topic, for now, anyway
06-19-2009 – Testing for Furanic Compounds in Insulating Liquids – Estimating Degree of Polymerization
06-12-2009 – Testing for Furanic Compounds in Insulating Liquids – Significant values
06-05-2009 – Testing for Furanic Compounds in Insulating Liquids – When do we test for furans? (Part 2)
05-29-2009 – Testing for Furanic Compounds in Insulating Liquids – When do we test for furans? (Part 1)
05-22-2009 – Testing for Furanic Compounds in Insulating Liquids – How do you know if the paper is breaking down?
05-15-2009 – Testing for Furanic Compounds in Insulating Liquids

Disolved Gas Analysis:

05-08-2009 – Dissolved Gas Analysis (DGA) for Transformer Warranty – Ten-Month Full-Oil Test
05-01-2009 – Dissolved Gas Analysis (DGA) – The importance of DGA for new installations