In order to obtain the influence of different superheat temperatures on the SF

6

decomposition component characteristic information

this paper experimentally studies the SF

6

local superheat decomposition characteristicswith a fault temperature of 260

5

00 ℃

and studies the experimental data processing and analysis to study the severi-ty of different

overheat faults

decomposes the correlation between component feature information. The study showsthat with the increase of superheat temperature

the total decomposition amount CT

the decomposition amount of sul-fides CT

1

and the decomposition amount of carbides CT

2

all have an increasing trend;The effective production rateR

RMS

of each component has a strong correlation with the overheating temperature. The higher the decompositioncomponent gas production rate

the more severe the overheating fault of SF

6

electrical equipment;The characteristicratio C

SO

2

F

2

+ SOF

4

/lgC

SOF

2

+ SO

2

and its effective value TCR

RMS

1

（TCR

1

）can be used to measure the severity of POF. The larger the ratio

the higher the ratio

indicating that the fault is more severe;CT

2

/lgCT

1

or its effective value TCR

RMS

2

（TCR

2

）can be used as a measure of whether the POF is involved in carbon-containing metal build-up degradation levels. The larger the ratio

the more severe the metal degradation.