IEC60599

This European Standard was approved by CENELEC as a guide for interpreting the analysis
of dissolved and free gas for in-use assumed to be oil-impregnated equipment.

 

Case

Fault

C2H2/C2H4 CH4/H2 C2H4/C2H6
PD Partial discharge n.r. < 0,1 < 0,2
D1 Discharge (low energy) > 1 0,1 – 0,5 > 1
D2 Discharge (high energy) 0,6 – 2,5 0,1 – 1 > 2
T1 Thermal fault T < 300°C n.r. > 1 aber n.r. < 1
T2 Thermal fault 300°C - 700°C < 0,1 > 1 1 – 4
T3 Thermal fault T > 700°C < 0,2 > 1 > 4