Oil Transformers
Hermetically Sealed Oil-Immersed Transformer (S11–S22 series)
Fully sealed oil-immersed distribution transformer with no oil contact to air, for low maintenance and long life. 10 / 20 / 35 kV.
Key parameters
- Rated capacity
- 30–2500 kVA
- Voltage class
- 10 kV
- Vector group
- Yyn0 / Dyn11
- Construction
- Fully sealed / with conservator
Overview
In the sealed S11–S22 design, mineral oil is isolated from the atmosphere, preventing oxidation and moisture ingress so the oil never needs replacing. Low-loss grain-oriented cores and copper windings give reliable, efficient service outdoors from −30 °C to +40 °C.
Technical parameters
| Rated capacity (kVA) | No-load loss (W) | Load loss (W) | No-load current (%) | Impedance (%) | Dimensions (L×W×H, mm) | Total weight (kg) |
|---|---|---|---|---|---|---|
| 30 | 0.10 | 0.63/0.60 | 1.6 | 4 | 820×510×936 | 309 |
| 50 | 0.13 | 0.91/0.87 | 1.3 | 4 | 805×625×1015 | 393 |
| 63 | 0.15 | 1.09/1.04 | 1.3 | 4 | 815×595×1055 | 425 |
| 80 | 0.18 | 1.31/1.25 | 1.3 | 4 | 825×580×1110 | 500 |
| 100 | 0.20 | 1.58/1.50 | 1.2 | 4 | 865×665×1135 | 590 |
| 125 | 0.24 | 1.89/1.80 | 1.2 | 4 | 870×695×1165 | 657 |
| 160 | 0.28 | 2.31/2.20 | 1.1 | 4 | 1040×680×1220 | 793 |
| 200 | 0.34 | 2.73/2.60 | 1.1 | 4 | 1060×680×1245 | 890 |
| 250 | 0.40 | 3.20/3.05 | 1.0 | 4 | 1155×750×1290 | 1029 |
| 315 | 0.48 | 3.83/3.65 | 1.0 | 4 | 1195×770×1350 | 1151 |
| 400 | 0.57 | 4.52/4.30 | 0.9 | 4 | 1275×845×1400 | 1465 |
| 500 | 0.68 | 5.41/5.15 | 0.9 | 4 | 1300×810×1510 | 1627 |
| 630 | 0.81 | 6.20 | 0.8 | 4.5 | 1370×860×1530 | 1906 |
| 800 | 0.98 | 7.50 | 0.7 | 4.5 | 1460×930×1600 | 2245 |
| 1000 | 1.15 | 10.30 | 0.7 | 4.5 | 1590×1070×1650 | 2508 |
| 1250 | 1.36 | 12.00 | 0.6 | 4.5 | 1690×1130×1730 | 3230 |
| 1600 | 1.64 | 14.50 | 0.6 | 4.5 | 1830×1275×1760 | 3717 |
| 2000 | 1.94 | 17.20 | 0.5 | 5.5 | 1950×1290×1860 | 4700 |
| 2500 | 2.30 | 20.40 | 0.4 | 5.5 | 2100×1280×1920 | 5300 |
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