China Electrical Power Transformer manufacturer

6.6kV/KS9 Oil-immersed transformer fully sealed two windings

Product Details:
Place of Origin: China
Model Number: ks9
Payment & Shipping Terms:
Minimum Order Quantity: 1
Price: 200-200000/piece
Packaging Details: wooden case
Delivery Time: 15 DAYS
Payment Terms: LC T/T
Supply Ability: 5000 pieces/year
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Detail Information

Usage: Power Product Name: Three Phase Oil Transformer
Frequency: 50Hz/60Hz Output Voltage: Customize
Color: Optional Application: Change Voltage
Place Of Origin: Qingdao,China
High Light:

oil immersed distribution transformer


oil immersed power transformer

Product Description

oil-immersed transformer S9,30-2500KVA,6.9KV series,3 phase/fully sealed/double winding



Product Features:

This product is suitable for power supply and distribution in coal mine, iron mine, aluminum mine, copper mine, gold mine, silver mine, zinc mine, titanium mine, oil field, gas field, oil and gas station,explosion hazard gas etc.


Technical data



Rated Capacit(kVA)


H.V. winding



Tapping range of high voltage(%)


L.V. winding


Vector Group



Load Loss



current (%)

Short-circuit impedance


ks9-200/6 200 6 ±5






0.48 2.600 1.3



ks9-250/6 250 0.56 3.050 1.2
ks9-315/6 315 0.67 3.650 1.1
ks9-400/6 400 0.80 4.300 1.0
ks9-500/6 500 096 5.100  
ks9-630/6 630 1.20 6.200 0.9



Structural characteristics

The configuration structure is shield type, winding number is double winding, iron core structure is shell type, power supply phase number is three phase, iron core shape is E type, the processing is customized type, the cooling form is oil-immersed, frequency characteristic is medium frequency, the application range is mine, moisture-proof way is sealed.



Oxygen-free copper lines of lower resistivity, which will become smoother and burr-free after series of additional surface treatment, so the load loss of our transformer is lower and the electric performance is better.
High-quality silicon-steel plates which are of lower unit loss, and the no-load of the transformers is lower.
High-quality wooden laminating insulation pieces, which won’t split or move even under the influence of short circuit.
Thoroughly filtrated transformer oil containing less water, gas and impurities, which makes our transformers work better.
High-quality rubber sealing material, which can prevent the transformers form aging or leakage.





6.6kV/KS9 Oil-immersed transformer fully sealed two windings 0


·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.



6.6kV/KS9 Oil-immersed transformer fully sealed two windings 1



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6.6kV/KS9 Oil-immersed transformer fully sealed two windings 2

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