Distribution Transformer Manufacturer - S11 Oil-Immersed
S11 series oil-immersed distribution transformers with low no-load and load losses to the standard loss table, for pole-mounted and ground-mounted distribution in industrial, commercial and utility networks.
- Low losses — no-load and load losses to the S11 standard table (e.g. 0.81 / 6.20 kW at 630 kVA).
- Sealed corrugated tank — oil tank with corrugated cooling fins, sealed against moisture ingress.
- Standard fittings — oil level gauge, thermometer, pressure relief and earthing terminals.
- Ratings to order — capacity, voltage ratio, impedance and connection group built to your specification.
Model Meaning
XT-S11-<capacity>: S11 is the low-loss series designation; the number is the rated capacity in kVA. Standard ratings listed are 315, 630 and 1000 kVA; other capacities, voltage ratios and connection groups are built to order.
Service Conditions
For outdoor installation, pole-mounted or on a ground plinth. Standard voltage ratio 10 kV / 0.4 kV, connection group Dyn11, ONAN cooling. Loss values follow the S11 standard loss table.
Common Specifications
| Series | S11 low-loss series |
|---|---|
| Connection group | Dyn11 |
| Cooling | ONAN |
| Loss basis | S11 standard loss table |
Models & Variants
| Model | Capacity | Voltage HV / LV | Losses no-load / load (kW) | Impedance | |
|---|---|---|---|---|---|
| XT-S11-315 | 315 kVA | 10 kV / 0.4 kV | 0.48 / 3.65 | 4.0% |
| XT-S11-630 | 630 kVA | 10 kV / 0.4 kV | 0.81 / 6.20 | 4.5% |
| XT-S11-1000 | 1000 kVA | 10 kV / 0.4 kV | 1.15 / 10.30 | 4.5% |
Packing & Shipping
Secured on a wooden base and protected for upright transport; oil filling arranged per destination requirements.
Customisation & Accessories
Capacity, voltage ratio, impedance, connection group and fittings are built to order.