I used to be a lineman. When you have a transformer fuse cut-out explode in your face and a faulty transformer dump hot oil on you, it isn’t something you want to experience again. IFD technology is the greatest thing since ice cream. I would recommend this to all utilities.
Great idea. We figure about 1 in 4 transformers are usually faulty. If you will know which one has the fault, you won’t waste any time on that transformer.
I had a case where I closed in on a faulted transformer, and it spilled oil all over an expensive car located below it. This was an expensive public relations problem for our utility.