DURATION: 45 mins
SYNOPSIS: Distribution transformers face severe fast transient overvoltages during switching, causing damaging internal spikes and accelerating insulation aging. These events, including reignitions and resonance effects, increase failure risk. TVP® technology provides specialized protection against switching transients, improving transformer reliability and long‑term performance.

In this section, we will present:
 

• Transient voltage phenomena during switching and identification of high‑risk operating segments
• Hitachi Energy’s Transient Voltage Protection (TVP): principles and key components
• TVP performance, including comparisons with traditional methods