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Shanghai Huakong Electric Group Co., Ltd.

Distribution Transformer, Oil Transformer, Transformer manufacturer / supplier in China, offering 10kv Oil Immersed Power Transformer (OLTC SZ9 /SZ11), 75kw Stationary Screw Air Compressor of Rotary Type, Screw Industrial Air Compressor with CE Certificate and so on.

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Supplier Homepage Product Power transformer 10kv Oil Immersed Power Transformer (OLTC SZ9 /SZ11)

10kv Oil Immersed Power Transformer (OLTC SZ9 /SZ11)

FOB Price: US $1,000-10,000 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $1,000-10,000/ Piece
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Production Capacity: 500PCS Per Month
Transport Package: Wooden Case
Payment Terms: L/C, T/T, Western Union

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Basic Info
  • Model NO.: SZ9 /SZ11
  • Phase: Three
  • Cooling Method: Oil-immersed Type Transformer
  • Type: Transformer
  • Trademark: SHHK
  • Origin: Shanghai, China
  • Application: Power
  • Core: Core-type Transformer
  • Winding Type: Two-winding Transformer
  • Frequency: 50Hz
  • Specification: GB, DQJC
  • HS Code: 8504
Product Description

Product Introduction:

SZ on-load voltage regulating power transformer is a kind of equipment instated with on-load tap changer.

On-load voltage regulating power transformer is designed by branching tapping switches form transformer winding.

Under the condition of without cutting load current, through on-load tap changer, we change the transformation ratio to achieve the purpose of keeping constant output voltage, with method of changing tapping position and effective turns number.


Model definition:




1. Stabilizing voltages of different load centers in power grid system, for improving power supply quality

2. As the connecting transformer between two networks, for distributing load of networks

3. Used in power supplies that use load to adjust current and power, for improving production efficiency

4. For places having strict voltage control request, such as power transformers used in electronic industry, hospitals etc.


Working conditions:

1. Altitude: ≤2000m in indoor or outdoor use

2. Maximum environmental temperature: +40degree, maximum daily average temperature: +30degree

3. Maximum annual average temperature: +20degree, minimum temperature: -25 degree

4. Customized products are available.


Standard files:

GB1094.1~2-1996,GB1094.3,5-2003 power transformers

GB/T6451-2008 three-phase oil-immersed power transformer technology parameters and requirements


Performance characteristics:

High-low voltages casings are separately or together closed up with metal case, which prevents naked conductive body outside transformer form corrosive gas and dust, and improve the operation reliability and safety

Closed case can match with cable or enclosed bus to become more perfect. Low voltage busbar top outlet: high voltage cable top inlet, low voltage busbar side outlet; high voltage cable bottom inlet, low voltage busbar bottom outlet; etc.

The product performances characteristics of 10KV/35KV no-load or load voltage regulating voltage is the same with that of common mineral oil full sealed distribution transformer and power transformer, so they are equivalent in use.
10kv Oil Immersed Power Transformer (OLTC SZ9 /SZ11)
10kv Oil Immersed Power Transformer (OLTC SZ9 /SZ11)
10kv Oil Immersed Power Transformer (OLTC SZ9 /SZ11)


(SZ9-400~1600/10 Series) 
Rated capacityVoltage group(KV)Vector group typeDissipation (KW)Impedance voltageNo-load currentWeight (KG)External dimension (mm) (L*W*H)
(KVA)HVLVNo-loadLoad (120degree)






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