|
| Part | Single indicator |
|
| Body | H2 content | C2H2 content |
| C2H4 content | C2H6 content |
| CH4 content | Total hydrocarbon content |
| Absolute gas production rate of H2 | Absolute gas production rate of C2H2 |
| Absolute gas production rate of total hydrocarbon | Relative gas production rate of total hydrocarbon |
| Absolute CO gas production rate | Absolute CO2 gas production rate |
| Initial difference of winding DC resistance | Imbalance rate of winding DC resistance |
| Apparent discharge | Core grounding current |
| Core insulation resistance | Polarization index |
| Winding insulation resistance | Winding absorption ratio |
| Initial difference of short-circuit impedance | Imbalance rate of short-circuit impedance |
| Difference of winding voltage to initial value | Initial difference of winding capacitance |
| Loss factor of oil medium | Furfural content |
| Winding frequency response test | Insulation paper degree of polymerisation |
| CO content | CO2 content |
| Water content in oil | Winding dielectric loss |
|
| Bushing | H2 content | C2H2 content |
| CH4 content | Dielectric loss factor of bushing |
| Initial difference of bushing capacitance | Insulation resistance of bushing end screen |
| Insulation resistance of bushing | Infrared image analysis |
| C2H4 content | Total hydrocarbon content |
| Bushing leakage | Bushing oil level indicator |
|
| OLTC | Tap switch oil level indication | Oil filter for tap changer |
| Tap changer respirator | Limit device of tap changer |
| Tap position | Tap switch slide |
| Tap leakage | Tap switch control loop |
| Tap switch transmission mechanism | Action characteristics of tap changer |
| Number of tap changers | Tap switch oil pressure |
|
| Cooler system | Oil flow relay state | Radiator working state |
| Fan, oil pump, water pump state | Cooler system motor operation |
| Cooler control system state | |
|
| Nonelectric protective device | Thermometer indication | Oil level indicator indication |
| Gas relay malfunction | Pressure release valve malfunction |
| Consistency from a distance | |
|
