Home ProductsPower Distribution Transformer

Double Column Electrical Power Transformer 35kV - 6300kVA Low Loss SZ Series

Good quality Oil Immersed Transformer for sales
Good quality Oil Immersed Transformer for sales
Customer Reviews
Pearl Electric is equipped with a professional ,efficient team.

—— CEO Mr.Leong

Nice peopele, nice product.

—— General Manger Morne

Pearl Electric is one of the leading supplier in China Nuclear project.

—— China Nuclear Power

Thanks for providing stable performance , high quality power equippment all the time. It is a AAAA level of qualified suppliers

—— China Guangdong Nuclear Power

Pearl Electric is a promissing high-tech enterprise.

—— State Power Investment

I'm Online Chat Now

Double Column Electrical Power Transformer 35kV - 6300kVA Low Loss SZ Series

China Double Column Electrical Power Transformer 35kV - 6300kVA Low Loss SZ Series supplier

Large Image :  Double Column Electrical Power Transformer 35kV - 6300kVA Low Loss SZ Series

Product Details:

Place of Origin: China
Brand Name: Pearl Electric Co.,Ltd.
Certification: KEMA, CE, CCC, ISO9001
Model Number: PEO-S, S9~13,SZ11-M,SZ11

Payment & Shipping Terms:

Minimum Order Quantity: 1 unit
Price: USD/RMB
Packaging Details: Seaworthy wooden packing
Delivery Time: 45-50days ex-work
Payment Terms: T/T, L/C
Supply Ability: 2.5 Million KVA/Year
Contact Now
Detailed Product Description
Capacity: 4000~31500kVA Or Customized Rated H. V.: 33kv Or Customized
Rated L. V.: 11kV Or Customized Vector Group: Dyn11 Or Customized
Impedence: 8-11% Or Customized Cooling: ONAN / ONAF Or Customized


35kV - 6300kVA , 3 phases , Double-column , Power Distribution Transformer , Non-exitation regulating transformer​


Product Advantages


The core is manufactured with high quality cold rolled grain-oriented silicon steel of high magnetic conductivity, and 45° mitring and steps overlapping structure is used for core production, enable the effectiveness of reducing no-load loss and no-load current.

HV winding:

HV winding is manufactured with high quality copper conductor, adopting optimized structure to improve electric distribution. Lightning impulse wave process is carried out for calculation and analysis, thus to improve transformer's anti-lightning impulse capability.


LV winding is manufactured with high quality foil conductor, so the ampere-turn balance is excellent and the transverse magnetic flux leakage is low. The anti-short circuit capability is thus greatly improved. Oil conduit is rationally designed in the windings to increase winding's heat dispersion surface, effectively reduce temperature and improve transformer's overload capability.




By winding number


35 kV class 3-phase two-winding power transformer


By tap-changing


35 kV class on-load tap-changing power transformer



35 kV class off-load tap-changing power transformer



Insulation Structure:

The transformer adopts class-A insulation. The HV and LV windings are arranged in concentric way. Between the windings are oil-clapboard insulation structure built with paper cylinder and small oil conduit.


The tank conservator tank type with radiator fins. 

Executed Standards:


Oil inspection

  • the oil quality inspection on tank, on-load switch, conservator
    Take the oil sample from teh bottom of the tank and on-load switch, measure dielectric strength (kV/mm), it should not be less than 50kV/2.5mm (VDE 2.5mm electrode). For more details, please refer to “Instruction for transformer oil”
  • Oil level in conservator
    Inspect whether the temperature of oil is coincident with the oil gauge indicated.
    NOTE: When measuring oil temperature, the temperature sensor on cover can not be exposed under the strong sunlight directly.
  • Transformer deflation
    -- After oiling, or transformer has been placed for a long time, the transformer needs to be deflated.
    -- Open the deflated screw until the oil spill and no bubble appears.
    -- Recommendations for preparing some cloth to absorb oil.
    -- Sequence for deflating.
    Radiator Each deflated screw on the top of the radiator
    Cover Each deflated screw on the hand-decking
    On-load Switch Each deflated screw on the on-load switch and the tope of the oil
    absorbing pipe.
    Bushing Deflated screw on the bushing
    Gas relay Deflated screws on the gas relay
    Pressure release valve Deflated screws on the crust.
    **-Details are on teh instruction manual of each parts.

Double Column Electrical Power Transformer 35kV - 6300kVA Low Loss SZ Series








Contact Details
Pearl Electric Co.,Ltd.

Contact Person: Sandy

Tel: 86-020-22626603

Send your inquiry directly to us (0 / 3000)