TT issues 15 February 2021 TT issues 15 February 2021 Subscribe Login to Download PDF Editor’s Letter ALAN ROSS Transformers Are Cool – But Are They Really? IMPORTANCE OF THE COOLING SYSTEM FAQ about Geomagnetic Induced Current MONITORING It Isn’t Rocket Science. Well, Actually… PROPER TRANSFORMER COOLING High-Performance Fans for Liquid-Cooled Transformers TECHNOLOGY The Power of Coatings – Keeping the World Connected ANTI-CORROSION COATINGS Twin Technologies Test Transformer Reliability ULTRASOUND AND INFRARED: TECHNOLOGIES COMBINED Transformer Bushings – How to Detect Incipient Faults in an Early Stage? BUSHING FAILURES: A DIFFERENT APPROACH The Truth About Accuracy in Online Capacitance and Power Factor Measurements on Bushings: Myths vs. Facts MONITORING