Table 1.

Some real data from power supply companies in some provinces of China diagnosing power transformer fault types by DGA method.

Fault Type	Dissolved Gas (µL/L)					Sources
	CH${}_4$	C${}_2$H${}_2$	C${}_2$H${}_4$	C${}_2$H${}_6$	TH
LT (<150 ℃)	83	53	13	1.2	150.2	Jiujiang PSC
LT (150–300 ℃)	6.5	98	16	1.5	122	Fuzhou PSC
LT (150–300 ℃)	193	191	28	16	428	Yingtan PSC
LT (150–300 ℃)	12	46	11	1.8	70.8	Nanchang PSC
LT (150–300 ℃)	3.5	31	8.2	1	43.7	Yichun PSC
AD	61	307	105	6	479	Yingtan PSC