People Electric · Three-Winding OLTC Power Transformer
Product overview
People Electric SFSZ11-240000/220 is a three-phase, three-winding power transformer with on-load tap changing and oil-immersed air cooling. The exact source model has a220kV-class HV designation, while its technical table specifies230kV with the stated tap range. The documented winding capacities and voltage combination are retained separately from the system-class designation.
Technical selection summary
| Manufacturer / exact model | Original People Electric SFSZ11-240000/220 |
|---|---|
| Phase / windings | Three-phase; three-winding |
| Rated winding capacities | 240000 /240000 /120000kVA, corresponding to240 /240 /120MVA |
| HV rated voltage and tap range | 230kV ±8×1.25%, as tabulated;220kV in the model denotes voltage class |
| Medium / low winding rated voltage | 121kV /38.5kV |
| Tap changing | On-load tap changer |
| Cooling description | Oil-immersed air cooling, as model explanation |
| Vector group notation in source | Ynyn0d11; confirm exact nameplate notation and terminal connection drawing |
| Performance guarantees | The source includes loss, no-load-current and impedance entries without all units in the table heading. Confirm units, reference conditions and contracted guarantees against the factory technical schedule rather than inferring them. |
| Installation | Outdoor; ambient −40 to +40°C; altitude ≤1000m; higher altitude requires temperature-rise design adjustment |
| Environment | No corrosive gas; source pollution classIV or below; confirm complete environmental and insulation requirements. |
| Project changes | Manufacturer states winding number, regulation method, winding capacity ratio, voltage ratio and cooling may be customised to requirements. The figures here refer only to the named source example. |
This page describes the exact documented SFSZ11-240000/220 example, not every transformer in the220kV class. Confirm the approved winding schedule, tap-changer arrangement, vector group, insulation levels, loss units/test conditions, impedance guarantees, cooling and transport drawings before ordering. Original reference images and complete PDF are retained.
Typical applications
- Project-specific transmission/substation power transformation.
- Three-winding installations matching the documented capacity and voltage schedule.
Specify your enquiry
For a focused quotation, include:
- Exact model and approved three-winding capacity/voltage schedule, vector group and tap requirements.
- System frequency, insulation levels, fault duty, cooling, loss/impedance guarantees and test requirements.
- Site conditions, layout/transport limits, accessories, quantity and destination.
Download People Electric SFSZ11-240000/220 catalogue (PDF)
Product reference images and drawings
