Rogers

The method according to Rogers divides the gas ratios in each of four sections,
where partial discharge, discharge and thermal faults are assigned.
For thermal faults the temperature ranges are even more finely and
for TE and discharges should be made possible through the subdivision a more detailed classification of faults.

 

Rogers

Gas ratio

C2H2/C2H4

CH4/H2

C2H4/C2H6

< 0,1

0 1 0

0,1 … 1

1 0 0

1 … 3

1 2 1

> 3

2 2 2
Nr. Fault      
0 Normal 0 0 0
1 Partial discharge (high energy density) n.r. 1 0
2 Partial discharge (low energy density) 1 1 0
3 Discharge (low energy density) 1 → 2 0 1 → 2
4 Discharge (high energy density) 1 0 2
5 Thermal fault T < 150°C 0 0 1
6 Thermal fault 150°C - 300°C 0 2 0
7 Thermal fault 300°C - 700°C 0 2 1
8 Thermal fault T > 700°C 0 2 2