Substation transformer
Non Oriented Silicon Steel Transformer Core
Electrical Steel for Transformer Cores
Distribution Transformer Silicon Steel
Oriented Silicon Steel in Power Transformer
Non Oriented Silicon Steel Transformer Core
Electrical Steel for Transformer Cores
Distribution Transformer Silicon Steel
Oriented Silicon Steel in Power Transformer
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Cold-Rolled Sheet Silicon Steel Power Distribution Transformer

Cold-rolled sheet silicon steel is a type of electrical steel that is commonly used in the manufacturing of power distribution transformers.
Core-type Transformer
Product Details
application Details
Grain Oriented Silicon Steel in Power Transformer
The transformer core is made of imported high-quality cold-rolled silicon steel sheet, which greatly reduces no-load loss and no-load current. The core is tightly bound to ensure the compactness and reduce noise.
*  The high and low voltage windings are made of oxygen-free copper. The low voltage winding of 500KVA and below is of double-layer cylinder structure, of 630kVA and above adopt double helix or four helix structure. High-voltage winding adopts multi-layer cylinder structure.
*  Dyn11 is used in the transformer connection group to reduce the influence of harmonics on the power grid and improve the quality of power supply.
The transformer is a fully sealed structure, with three coats of primer and one coat of finish paint applied on the inner and outer surfaces. The product is salt fog proof, moisture proof and fungus-proofing, beautiful, durable and reliable
The measured noise value is lower than the standard and maintenance free under normal operation.

* This model is produced in accordance with Chinese national GB standards and the international IEC standards.
* It uses oil as the main insulation means of the transformer, and relies on oil as the cooling medium, such as oil-immersed natural cooling, oil-immersed air cooling, oil-immersed water cooling and forced oil circulation, etc.
* The main components: iron core, winding, fuel tank, oil pillow, breathing apparatus, explosion-proof tube (pressure release valve), radiator, insulating casing, tap switch, gas relay, thermometer, oil purifier, etc.
* Widely used in high-rise buildings, commercial centers, subways, airports, stations, industrial and mining enterprises, drilling platforms and oil production platforms; especially suitable for use in flammable, explosive and other harsh environments.

technical parameter
Silicon Steel Transformer
Model NO. S11

Frequency Characteristics

Power Frequency



H.V. Winding


Vector Group

Dyn11 Yyn0

No-Load Current

0.55- 1.3%


Combined Transformer, Power Transformer, Distribution Transformer

Shape of Core


Rated Capacity

50-31500 kVA

L.V. Winding


No-Load Loss




Production Capacity


Conditions of Use
*The maximum ambient air temperature shall not exceed 40°C, and the minimum shall not below -25°C;
*The altitude shall not exceed 1000m. If special customized transformers and low-voltage components are used, the altitude can reach 4,000m;
*The vertical inclination is no more than 5°, and no violent vibration and impact;
*The air humidity is not more than 90% (25°C);
*No gas and conductive dust that will seriously affect the insulation of transformer,no explosion hazard and corrosion of electrical components;
*Outdoor wind speed shall not exceed 35m/s;
*If service conditions beyond the above, specially customized product is available.

Transformer Structure

HFY Certification

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