Day: སྤྱི་ཟླ་བཅུ་གཅིག་པ། 7, 2025

Beyond the Ratio: Why Your TTR Tester is Your First Line of Defense in Transformer Health

For over 20 years, my life has revolved around substations, commissioning new transformers, and troubleshooting faulty ones. I’ve learned one undeniable truth: the most critical, and often most telling, diagnostic test is also one of the simplest in principle—the Transformer Turns Ratio (TTR) test. It’s the first test I run during acceptance of a new […]