Research Article

Comparative Performance Study of Dissolved Gas Analysis (DGA) Methods for Identification of Faults in Power Transformer

Table 5

Gas and IEC ratio codes [9].

Ratio codeRangeCode

C2H2/C2H4 ()<0.10
1
1
>3.02

CH4/H2 ()<0.11
0
2
>3.02

C2H4/C2H6 ()<0.10
0
1
>3.02