SGB DOTR 25000/110 Power transformers

Manufacturer: SGB

Model / Type: DOTR 25000/110

Type of Machine: Transformer

Condition: Tested in 2024, in storage since, condition monitored during storage

Technical Specifications:

- Rated power ONAN / ONAF: 20 / 25 MVA
- Rated power tertiary winding ONAN / ONAF: 6.667 / 8.333 MVA
- Cooling: KNAN / KNAF
- Frequency: 50 Hz
- Vector group: YNyn0(d)
- Nominal no-load HV voltage: 110 kV
- Tapping range: -8 / +8 x 1.25 percent
- Nominal no-load LV voltage: 20 kV
- Isolation HV Phases and HV Neutral:
- Highest voltage Um: 123 kV
- Impulse withstand voltage: 550 kV
- Power frequency withstand voltage: 230 kV
- Isolation LV Phases and LV Neutral:
- Highest voltage Um: 24 kV
- Impulse withstand voltage: 125 kV
- Power frequency withstand voltage: 50 kV
- Isolation Tertiary Winding:
- Highest voltage Um: 12 kV
- Impulse withstand voltage: 28 kV

Dimensions and Weights:

- Shipping weight: 53,500 kg
- Total weight: 57,000 kg
- Shipping dimensions: 6,400 x 3,200 x 3,400 mm
- Total dimensions: 7,100 x 3,200 x 4,600 mm

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