China Electrical Power Transformer manufacturer

Cooper Winding Material Oil Immersed Transformer Oil Filled Electric Transformer

Product Details:
Place of Origin: China
Model Number: S11
Payment & Shipping Terms:
Minimum Order Quantity: 1
Price: 200-200000/piece
Packaging Details: wood
Delivery Time: 15 DAYS
Payment Terms: LC T/T
Supply Ability: 5000 pieces/year
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Detail Information

Usage: Power,Distribution Transformer Phase: Three
Frequency: 50/60Hz Rated Capacity: High
Type: Oil Immersed,Oil Type,oil Immersed Current Transformer 132kv Product Name: 35kv, 110kv
Material: Copper+alumnium Vector Group: Dyn11/Yzn11
Winding Material: Cooper
High Light:

oil immersed distribution transformer


oil immersed power transformer

Product Description


35 KV oil immersed transformer


·Product introduction

S11 / 12kV fully sealed oil immersed power transformer shows the advantages of low loss, low noise and high efficiency, which achieves good energy saving effect and reduces pollution. Compared with the traditional oil immersed transformer, fully sealed transformer cancels the oil conservator. The change of oil volume is automatically adjusted and compensated by the elasticity of the corrugated sheet of the corrugated oil tank. The transformer is isolated from the air to prevent and slow down the deterioration of the oil and the aging of the insulation, thus enhance the operation reliability. Normal operation is maintenance free.


·Service conditions

The altitude shall not exceed 1000m

Ambient temperature: - 10 ℃ ~ + 40 ℃

Ceiling Monthly Average temperature: + 30 ℃

Maximum annual average temperature: + 20 ℃

Daily temperature difference: 25 ℃

Seismic crack degree: 8 degrees

Relative humidity: 95% (+ 25 ℃)



· Structural features:

1. 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.

2. 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.

3. 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.

4. 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

5. The measured noise value is lower than the standard and maintenance free under normal operation.


Note: Due to continuous product improvement, the dimensions provided in this sample are for reference only. If necessary, our company can design and produce according to user requirements. Please contact the company in time.

Main technical parameters
Main circuit rated voltage(V) .......................... Ac 400 (600)
Rated voltage of auxiliary circuit (V) .......................... Ac 220/380 (400) dc 110/220
Rated frequency (Hz) .......................... 50(60)
Rated insulation voltage(V) .......................... 690(1000)
Rated current(A) The level of bus ≤6000
Rated short-time bus withstand current (kA/1s) .......................... 50,80
Rated peak withstand current of bus (kA/0.1s) .......................... 105,176


Power frequency test voltage (V/1min)

main circuit 2500
Auxiliary circuit 1760



Three-phase four-wire system A,B,C,PEN
Three-phase five-wire system A,B,C,PE,N
Protection grade .......................... IP30


·Order instructions:

1. The customer needs provide main parameters of the transformer (input and output voltage, capacity, loss, etc.)

2. Other customer requirements


Cooper Winding Material Oil Immersed Transformer Oil Filled Electric Transformer 0

Cooper Winding Material Oil Immersed Transformer Oil Filled Electric Transformer 1



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