China Electrical Power Transformer manufacturer

35KV 33KV power Transformer, Oil Immersed, 3 Phase/ double Winding/ Copper Material

Product Details:
Place of Origin: China
Model Number: 35kv
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

Material: Copper Output Voltage: 6.3kv
Frequency: 50/60Hz Rated Capacity: 800kna-31500kva
Coil Number: 2 Windings Input Voltage:: 110v/200v/220v/240v/360v/480v
Model Number:: Customized
High Light:

three phase oil immersed transformer


oil immersed distribution transformer

Product Description

35KV, 800~31500KVA, Oil-Immersed Power Transformer,3 Phase/ duplex-Winding

no-excitation voltage regulation


Product features

The oil immersed power transformer is used for regulating voltage and AC power transmission. The advantages include small dimension, reasonable price, strong weather resistance and so on. It is applicable to power systems, industrial and mining enterprises, transportation, post and telecommunications sector, research institutes, etc.Smart and diverse structures and nice appearance make this product to meet the needs of different users.

High-quality grain-oriented cold-rolled silicon steel sheet are employed, and the whole oblique non-porous

banding structure are used here. The core has a multi-level ladder shape, with three joints or five joints, which

is of low no-load loss and low noise. Rolled cores are direct rolled by certain special equipment, which gives the

advantages including no seam, no corner weight, reluctance reduction, low no-load loss. Amorphous alloy is an

advanced core material, which leads to an average reduction of 72% no-load loss and a reduction of 50% no-load

The high-quality QQ acetal enameled round copper wire and oxygen-free copper rod are used to form the coil.

The coil type includes cylinder type, continuous type, new type spiral type, split type, etc. It has sufficient electrical

strength, mechanical strength and cooling capacity.
In order to increase the capacity of anti-short-circuit of the transformer, self-adhesive transposition wire is used in the

35kV and above windings. The wire is made of self-adhesive acetal enameled flat wire, and after winding into a coil,

it is heated so that the flat wire could be bonded between each other to form a rigid coil, which can withstand greater

bending stress, thereby enhancing the capacity of anti-short-circuit of the transformer. The most important feature of

the self-adhesive transposition wire is that it can reduce the loss of the transformer, and as a result of multi-stranded

conductor with transposition, the eddy current loss and circulation loss are greatly reduced, it can also reduce the

temperature rise of the partial hot spots of winding, thus the winding temperature distribution is more uniform.

Oil tank
The oil tank is made of high quality steel plate, and the shape includes elliptical shape, rectangular shape, etc.

The type of the radiator includes: corrugated sheet type radiator, expansion type radiator and corrugated type tank.

The sealing performance test is conducted on oil tanks. The inside and outside surfaces are pickling and phosphate

treated, and then spray priming paint for three times and surface paint for one time, which give its corrosion resistance.







y group


Voltagecombination(KV) loadlss(W)





Highvoltage Tappingrange Lowoltage Dy Yy
S11-630 630 Yd11 35 土5%




830 7870 1.10 6.5
S11-1000 1000 1150 11540 1.00
S11-1250 1250 1410 13940 0.90
S11-2000 2000 2180 18380 0.70
S11-3150 3150 35-38.5 土5%




3040 23090 0.56 7.0
S11-4000 4000 3620 27360 0.56
S11-5000 5000 4320 31380 0.48
S11-6300 6300 5250 35060 0.48 7.0
S11-8000 8000 YNd11 35--38.5









7200 38500 0.42
S11-10000 10000 8700 45300 0.42
S11-16000 16000 12160 65800 0.40
S11-20000 20000 14400 79500 0.40
S11-25000 25000 17020 91400 0.32

35KV 33KV  power Transformer, Oil Immersed, 3 Phase/ double Winding/ Copper Material 0


Our Service:



1.OEM is available.

2.Your inquiry related to our product & price will be replied within 24 hours

3.Well-trained & experienced staff are to answer all your inquiries in English

4.Working time: 8:00am ~17:45pm, Monday to Saturday. (UTC+8)

5.Customized solution & perfect after-sale service

6. Payment: we can accept T/T, L/C, Western Union.

7. For large order, engineer can be sent to your country for on-site mainternace instructions.


35KV 33KV  power Transformer, Oil Immersed, 3 Phase/ double Winding/ Copper Material 1






Distribution transformer is one of the important equipments in power supply and distribution system of industrial and mining enterprises and civil buildings. It reduces the network voltage of 106 kV or 35 kV to the bus voltage of 230 / 400V.

1 This product is suitable for AC 5060 HZ, three-phase maximum rated capacity of 2500 KVA 

2 single-phase maximum rated capacity of 833 KVA, generally do not recommend use of single-phase transformer,

3 can be used in indoor and outdoor, capacity of 315 KVA and below

4 can be installed on the Rod

5 The ambient temperature shall not be higher than 40 °C, not lower than-25 °c,

6  the maximum daily average temperature shall be 30 °c, the maximum annual average temperature shall be 20 °c,

7 the relative humidity shall not exceed 90%

8  the ambient temperature shall be 25 °C, and the altitude shall not exceed 1000m.

9  If it does not conform to the above-mentioned conditions, it shall be adjusted according to the relevant provisions of GB6450-86. 


35KV 33KV  power Transformer, Oil Immersed, 3 Phase/ double Winding/ Copper Material 2



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