Yes, there are some practical observations from applying TOR-5 on very large transformers (70-80 tons of oil). Technically the system works well, but expectations must be realistic: with such a large oil and paper mass, any drying or conditioning effect is necessarily slow. You should think in terms of months, not weeks, for noticeable moisture reduction in paper. The main value in these cases is trend monitoring and early warning (hydrogen, moisture dynamics), not fast conditioning. Flow rate relative to volume is small, so stability and long-term data are the key benefits rather than rapid improvement.