S11/20KV Oil-immersed transformer
Product Features:
S11 / 20kV oil immersed distribution transformer is widely used in
industrial and mining enterprises, agriculture and civil buildings,
and also suitable for places with many oil and chemical substances
in petroleum and chemical industries. The low-voltage winding with
the capacity of 630 ~ 2000kVA adopts the tubular or spiral
structure, with high mechanical strength, balanced ampere turn
distribution and good short-circuit resistance.
Technical data
| Type | Rated Capacity (KVA) |
H.V. winding (kV)
| L.V. winding (kV) | Vector Group | short circuit impedance (%) | No-Load Loss(W) | Load Loss (W) |
| S11-30/20 | 30 |
20 | 0.4 | Dyn11
Yyn0 | 4 | 100 | 690/660 |
| S11-50/20 | 50 | 130 | 1010/960 |
| S11-63/20 | 63 | 150 | 1200/1150 |
| S11-80/20 | 80 | 180 | 1440/1370 |
| S11-100/20 | 100 | 200 | 1730/1650 |
| S11-125/20 | 125 | 240 | 2080/1980 |
| S11-160/20 | 160 | 290 | 2540/2420 |
| S11-200/20 | 200 | 340 | 3000/2860 |
| S11-250/20 | 250 | 400 | 3520/3350 |
| S11-315/20 | 315 | 480 | 4210/4010 |
| S11-400/20 | 400 | 570 | 4970/4730 |
| S11-500/20 | 500 | 680 | 5940/5660 |
| S11-630/20 | 630 | 4.5 | 810 | 6820 |
| S11-800/20 | 800 | 980 | 8250 |
| S11-1000/20 | 1000 | 1150 | 11330 |
| S11-1250/20 | 1250 | 1380 | 13200 |
| S11-1600/20 | 1600 | 1660 | 15950 |
| S11-2000/20 | 2000 | 1950 | 19140 |
| S11-2500/20 | 2500 | 2340 | 22220 |
Structural characteristics
1. The low-voltage winding is of cylindrical or spiral structure,
with high mechanical strength and good short-circuit resistance.
2. The corrugated oil tank is adopted to replace the oil
conservator. The oil tank cover and the oil tank are all welded
along the edge or fastened with bolts, thus prolonging the service
life of the transformer oil.
3. After oil removal, embroidery removal and phosphating treatment,
the product is sprayed with three times of primer and one time of
finish paint inside and outside. The product is salt fog proof,
damp heat proof and fungus proof, which can meet the special
requirements of metallurgy, petrochemical system and wet and
polluted areas. It is beautiful and reliable.
4. The transformer oil tank is fully sealed, and equipped with
pressure reducing valve, signal thermometer, gas relay, etc
according to the standard requirements to ensure the safe operation
of the transformer.
5. This series of products are beautiful in appearance, small in
size, and can reduce the installation area. It is an ideal
maintenance-free distribution product.
Workshop
·Service conditions
1. The maximum ambient air temperature shall not exceed 40 ℃, and
the minimum shall not below - 25 ℃;
2. The altitude shall not exceed 1000m. If special customized
transformers and low-voltage components are used, the altitude can
reach 4000m;
3. The vertical inclination is no more than 5 °, and no violent
vibration and impact;
4. The air humidity is not more than 90% (+ 25 ℃);
5. No gas and conductive dust that will seriously affect the
insulation of transformer, no explosion hazard and corrosion of
electrical components;
6. Outdoor wind speed shall not exceed 35m / s.
7. If service conditions beyond the above, specially customized
product is available.
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