Table 1.
Parameters of the transformer health index [15].
| Item | Condition Criteria | Item | Condition Criteria |
|---|---|---|---|
| 1 | DGA | 13 | Main Tank Corrosion |
| 2 | Load History | 14 | Cooling Equipment |
| 3 | Power Factor | 15 | Oil Tank Corrosion |
| 4 | Infra-Red | 16 | Foundation |
| 5 | Oil Quality | 17 | Grounding |
| 6 | Overall Condition | 18 | Gaskets, Seals |
| 7 | Furan or Age | 19 | Connectors |
| 8 | Turns Ratio | 20 | Oil Leaks |
| 9 | Leakage Reactance | 21 | Oil Level |
| 10 | Winding Resistance | 22 | DGA of LTC |
| 11 | Core-to-Ground | 23 | LTC Oil Quality |
| 12 | Bushing Condition | 24 | Overall LTC Condition |