If a transformer makes an unusual amount of noise, it is performing as designed. If the humming noise varies in characteristics, loudness, or pitch when a particular piece of equipment turns on, it is giving pertinent data on the operation…
When you open up a transformer’s specs, you’ll see terminology that presumes you have previous familiarity with the equipment: conservator, Buchholz relay, bushing, tap changer, active part, etc. For when the elements are discussed in the order of their function,…
All transformers fall into one category. Therefore, they seem to be identical. But this is not correct. Each transformer is a result of various decisions taken regarding a particular application. Even a 1,000 kVA transformer can be designed to be…
In a substation, two transformers may appear similar from the outside but may operate differently when put under load. The reason for this difference is not because of the difference in the manufacturing of the transformers but due to the…
At the end of its useful life, a transformer is not junk. It consists of a steel shell, copper, laminated electrical steel, and some hundreds of liters of insulating oil, each of which has a value that can be tapped…