News & Events

Transformerliquid 6

What is the Corrosive Sulfur Test?

There are different types of sulfur compounds found in refined transformer oil, but not all are corrosive. However, the effect corrosive sulfur can have in a transformer can be significant. The corrosive sulfur compounds can react with copper and other metals. If left unchecked, corrosion damage caused by corrosive sulfur can become severe enough to the point of failure. In 2010, IEEE published a technical paper stating, “corrosive sulfur in transformer oil has been identified to cause sudden and unexpected failures of several transformers in recent years.” 1

Fortunately, SDMyers can test for corrosive sulfur. Andy Shkolnik explains the testing process in the video below.


Optimize Your Transformer Reliability

SDMyers is focused on making your high-voltage equipment reliable for as long as possible. Our customers leverage our expertise and decades of proprietary data to keep their facilities running at peak performance.

If you need information about transformer oil testing, how to understand the overall condition of your transformer, or support for maintenance or repairs, we can help.

Contact SDMyers

1 Corrosive Sulfur in Transformer Oil, IEEE, 2010,

September 06, 2022
Please wait while logging in.