The final required creepage distance calculated after applying correction factors to the RUSCD.
: Revised terms for USCD, nominal creepage distance, and insulator trunk. iec 60815-2 pdf
: The standard analyzes how different shapes (e.g., standard, anti-fog, or open profiles) perform under various types of pollution like salt spray or industrial dust. nominal creepage distance
A second edition ( IEC TS 60815-2:2025 ) has been released to simplify profile suitability and update correction factors (e.g., for parallel insulators and altitude). iec 60815-2 pdf
IEC 60815-2:2018 - Surge arresters - Part 2: Surge arresters for power systems with voltages above 1 kV