S11-33kv oil immersed distribution transformer is widely used in industrial and mining enterprises, agriculture and civil buildings, and it’s 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. The positioning structure is added to the transformer body to avoid displacement during transportation. At the same time, all fasteners are equipped with fastening nuts to ensure that the fasteners won’t loose during long-term operation of the product. The product is free of maintenance and long-term operation.
| Rated Capacity （kVA） |
H.V. winding (kV) |
Tapping range of high voltage (%) |
L.V. winding (kV) |
Vector Group | No-Load Loss(W) |
Load Loss (W) |
No-load current (%) |
Short-circuit impedance (%) |
|---|---|---|---|---|---|---|---|---|
| 50 | 33 | ±5% ±2x2.5% |
0.4 | Dyn11 Yyn0 |
130 | 1200/1140 | 1.3 | 6.5 |
| 100 | 185 | 2010/1910 | 1.10 | |||||
| 125 | 215 | 2370/2260 | 1.10 | |||||
| 160 | 225 | 2820/2680 | 1.00 | |||||
| 200 | 270 | 3320/3160 | 1.00 | |||||
| 250 | 320 | 3950/3760 | 0.95 | |||||
| 315 | 385 | 4750/4530 | 0.95 | |||||
| 400 | 465 | 5740/5470 | 0.85 | |||||
| 500 | 545 | 6910/6580 | 0.85 | |||||
| 630 | 665 | 7860 | 0.65 | |||||
| 800 | 785 | 9400 | 0.65 | |||||
| 1000 | 920 | 11500 | 0.65 | |||||
| 1250 | 1120 | 13900 | 0.6 | |||||
| 1600 | 1350 | 16600 | 0.6 | |||||
| 2000 | 1590 | 19700 | 0.55 | |||||
| 2500 | 1890 | 23200 | 0.55 |
Iron core
Is made of high-quality grain oriented cold-rolled silicon steel sheet, with full oblique and holeless binding structure. The iron core is of multi-stage stepped shape, with three or five joints, low loss and low noise. The rolled iron core is directly wound by special equipment, without joints and angle weight, reducing magnetic resistance and low loss. The amorphous alloy transformer core is a new kind of higher quality iron core material, with an average drop of 72% for low air loss and 50% for no-load current compared with the traditional silicon steel sheet.
Coil
It is made of high-quality QQ acetal enamelled round copper wire and flat copper coin drawn by oxygen-free copper rod. Coil forms include cylinder type, continuous type, new spiral type, split type, etc with sufficient electrical strength, mechanical strength and heat dissipation capacity. In order to increase the short-circuit resistance of transformer, higher quality self-adhesive transposed conductor can be used. The coil is made of self-adhesive acetal enamelled flat wire. After being wound into a coil, the enamelled flat wires are mutually bonded to form a rigid coil, which can withstand greater bending stress, thus enhancing the short-circuit resistance of the transformer. The biggest characteristic of the self-adhesive transposed conductor is that it can reduce the loss of the transformer. The multi-split conductor and transposition can greatly reduce the eddy current loss and circulation loss, reducing the temperature rise of the hot spot of the winding, and make the temperature distribution of the whole winding more evenly.
Oil tank
It is welded by high-quality steel plates elliptical or rectangular structures. The radiator elements are chip type radiator, expansion radiator or corrugated oil tank. The oil tank sealing is tested reliably in the factory. It 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 in appearance and reliable in operation.
1. The maximum ambient air temperature shall not exceed 40 ℃, and the minimum shall not below - 25 ℃;
2. The working altitude shall not exceed 1000m. If special customized transformers and low-voltage components are used, the working altitude can reach 4000m;
3. The vertical inclination is not more than 5 ° with no violent vibration and impact;
4. The air humidity is no more than 90% (+ 25 ℃);
5. Places where there are 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 environment conditions beyond the above, special customized product is available with our company.
Clients need advise main parameters of the transformer like capacity, input voltage, output voltage and connection group in inquiry.
Other custom requirement.
As an enterprise specializing in transformer production for 20 years, we have high quality, fast delivery, guarantee after-sales service and factory price. What's more, we have ISO9001-2008, OHSAS 18001:2007, ISO4001:2004L certificates and IEC, ANSI, KEMA, GOST standard.
Yes, each product comes with two year(Up to 5 years)warranty to ensure the correct use of the product by the customer.
11kV-220kV Oil-immersed Power Transformer, Dry-type Transformer, Unpacked H Grade Dry Transformer, Oil-immersed Distribution Transformer, Pad-mounted Transformer.
Yes! Our products can be customized. We have design and engineering teams, and we can customize products according to customers' drawings or requirements.
1 set.
It depends on the quantity of your order. It usually takes 20-45 days.
We always adhere to technology as our guiding principle, upholding the spirit of "dedication, professionalism, and focus," to provide meticulously crafted tools and serve millions of users worldwide.
We have established a professional R&D team to continuously optimize our products, save energy, and adopt new manufacturing processes to tailor high-performance, cost-effective equipment for our customers.
We have more than 20 years to produce different kinds of transformers.
The factory's 6S management system improves efficiency, ensures quality, and safeguards the quality of the products the company outputs.
As a high-tech enterprise integrating R&D, production and sales, we ensure product quality while maximizing cost advantages for our customers.
We have a strong supply chain and after-sale service.
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