Oil-immersed transformers
S13 Oil-Immersed Distribution Transformer 10 kV
Sealed, low-loss, maintenance-free — the workhorse of every distribution network.
- 30–2,500 kVA
- 6–11 / 0.4 kV
- IEC 60076
Fully sealed S11-M / S13-M three-phase oil-immersed transformers from 30 to 2,500 kVA for 6–11 kV networks. Corrugated-fin tanks need no conservator, the oil never touches air, and S13 cuts no-load loss by 20–30% versus S11.
ModelsS11-MS13-M
- IEC 60076
- GB 1094
- GB/T 6451
- ISO 9001
Highlights
- 30 – 2,500 kVA, 6–11 kV / 0.4 kV
- S13 no-load loss 20–30% below S11
- Fully sealed corrugated tank, no oil maintenance
- Dyn11 / Yyn0, ±2×2.5% off-circuit tapping
Key parameters
| Model | S11-M | S13-M |
|---|---|---|
| Rated capacity | 30 – 2,500 kVA | |
| HV rated voltage | 6, 6.3, 10, 10.5, 11 kV | |
| LV rated voltage | 0.4 kV (0.415 / 0.433 kV on request) | |
| Tapping range | ±5% or ±2×2.5% | |
| Tap changer | Off-circuit (DETC) | |
| Vector group | Dyn11, Yzn11, Yyn0 | |
| Short-circuit impedance | 4.0% (≤500 kVA) · 4.5% (630–1,600 kVA) · 5.0% (2,000–2,500 kVA) | |
| Frequency | 50 / 60 Hz | |
| Cooling method | ONAN | |
| Core | Cold-rolled grain-oriented silicon steel | |
| Windings | Copper or aluminium | |
| Insulating oil | Mineral oil (natural ester on request) | |
| Tank / enclosure | Fully sealed, corrugated fins | |
| Insulation level | LI75 AC35 / LI0 AC5 (10 / 0.4 kV) | |
| Installation | Indoor & outdoor | |
| Standards | IEC 60076, GB 1094.1/2/3/5, GB/T 6451 | |
Ratings & losses
| Rated capacitykVA | Short-circuit impedance% | No-load lossS11W | No-load currentS11% | No-load lossS13W | No-load currentS13% | Load lossS11 / S13W |
|---|---|---|---|---|---|---|
| 30 | 4.0 | 100 | 2.3 | 80 | 2.0 | 630/600 |
| 50 | 4.0 | 130 | 2.0 | 100 | 1.7 | 910/870 |
| 63 | 4.0 | 150 | 1.9 | 110 | 1.6 | 1090/1040 |
| 80 | 4.0 | 180 | 1.9 | 130 | 1.6 | 1310/1250 |
| 100 | 4.0 | 200 | 1.8 | 150 | 1.5 | 1580/1500 |
| 125 | 4.0 | 240 | 1.7 | 170 | 1.4 | 1890/1800 |
| 160 | 4.0 | 280 | 1.6 | 200 | 1.3 | 2310/2200 |
| 200 | 4.0 | 340 | 1.5 | 240 | 1.2 | 2730/2600 |
| 250 | 4.0 | 400 | 1.4 | 290 | 1.1 | 3200/3050 |
| 315 | 4.0 | 480 | 1.4 | 340 | 1.1 | 3830/3650 |
| 400 | 4.0 | 570 | 1.3 | 410 | 1.0 | 4520/4300 |
| 500 | 4.0 | 680 | 1.2 | 480 | 0.9 | 5410/5150 |
| 630 | 4.5 | 810 | 1.1 | 570 | 0.8 | 6200 |
| 800 | 4.5 | 980 | 1.0 | 700 | 0.7 | 7500 |
| 1,000 | 4.5 | 1,150 | 1.0 | 830 | 0.7 | 10300 |
| 1,250 | 4.5 | 1,360 | 0.9 | 970 | 0.6 | 12000 |
| 1,600 | 4.5 | 1,640 | 0.8 | 1,170 | 0.6 | 14500 |
| 2,000 | 5.0 | 1,940 | 0.8 | 1,550 | 0.5 | 18300 |
| 2,500 | 5.0 | 2,290 | 0.7 | 1,830 | 0.4 | 21220 |
Load loss shown as Dyn11 / Yyn0. Gas relay and temperature controller fitted from 630 kVA. Final data per order test report.
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Inquire about this product
S13 Oil-Immersed Distribution Transformer 10 kV
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