Scenario
Nameplate data of transformer:
Transformer: GSU transformer
Manufact: xxx
Year: 1974
Power [MVA]: 760
Voltage [KV]: 400
Oil mass [Kg]: 55.000
Problem
See analytical results of the oil before treatment (table below)
Soluzione Sea Marconi
Solution: Dehalogenation treatment (CDP Process®) in order to remove the PCBs from the oil and transformer.
Before treatment |
After treatment |
|
| TAN [mg KOH/g] | 0,029 | < 0,010 |
| Breakdown voltage [KV] | 58,7 | 75 |
| PCBs [mg/Kg] | 57,2 | 9,6 |
