Which standards govern dissolved gas analysis of transformer oil?

DGA sampling and interpretation are commonly guided by IEC standards. IEC 60567 covers sampling of gases and analysis of free and dissolved gases in oil filled equipment. IEC 60599 provides guidance on interpreting dissolved and free gases to identify fault types like partial discharge, thermal faults, and arcing. Many organizations also use ASTM D3612 for DGA measurement procedures as a widely referenced method in North America.