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Transformer Oil Testing Parameters and Test Methods for Complete TCA Analysis

Transformer Condition Assessment (TCA Test)
PARAMETERS TEST METHODS
H2, Hydrogen
CH4, Methane
C2H6, Ethane
C2H4, Ethylene
C2H2, Acetylene
CO, Carbon Monoxide
CO2, Carbon Dioxide
N2, Nitrogen
O2, Oxygen
Total
TDCG
TDHHG
ETCG
Particles in 100 ml
• >4µ
• >6 µ
• 14 µ
• 21 µ
• 38 µ
• 70 µ
Moisture Content
Breakdown Voltage
Acid Number
Interfacial Tension
Color
Power Factor @ 90 0C
FURANS
• 5 Hydroxymethyl 1-2 furfuraldehyde
• 2 furaldehyde
• 2 acetylfuran
• 5 methyl 2 furaldehyde
• Furfuryl Alcohol
Estimated Degree of Polymerization
Induction Period @ 120 0C
Flash Point
Kinematic Viscosity @ 400C
Corrosive Sulphur
ASTM D 3612












ISO 4406






IEC 60814
IEC 60156
IEC 60296
ASTM D 971
ASTM D 1500
IEC 60247
ASTM D 5837





IEC 61619
IEC 61125 B
ASTM D 93
ASTM D 445
ASTM D 1275