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Guangzhou Guanggao High Voltage Electric Apparatus Co.,Ltd.
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2500kVA 10kV Amorphous Alloy Oil Immersed Distribution Transformer with Energy Efficiency Level 2

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Guangzhou Guanggao High Voltage Electric Apparatus Co.,Ltd.

City: guangzhou

Country/Region:china

Tel:86-020-82505003

Contact Person:
Ms.Liu
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2500kVA 10kV Amorphous Alloy Oil Immersed Distribution Transformer with Energy Efficiency Level 2

Brand Name GuangGao
Model Number D
Certification ISO CESI UL KEMA
Place of Origin Guangzhou
Minimum Order Quantity 3
Payment Terms T/T L/C
Packaging Details Export Standard Package
Phase 3
Input Voltage 6kV、6.3kV、6.6kV、10kV、10.5kV、11kV
Output Voltage 0.4kV
Winding Material Copper / Aluminum
Core Material Silicon Steel Core / Amorphous Core
Application Power
Rated Capacity 30-2500KVA
Warranty 2 years
Vector Group Dyn11 Yzn11 Yyn0
Cooling Method ONAN
Standard IEC Standard
Name Oil Immersed Distribution Transformer
Detailed Product Description
Amorphous Alloy 10kV Oil-immersed Distribution Transformer S(B)H21-NX2 Energy Efficiency Level 2    
Product Specifications
         Amorphous alloy 10kV oil-immersed distribution transformer S(B)H21-NX2 energy efficiency level 2
Capacity(kVA)Voltage CombinationVector groupNo load loss(W)Full Load Loss(W)Short Circuit Impedance(%)
HV(kV)H.V. Tapping RangeLV(kV)
306                         6.3                 6.6                  10                10.5                11±5%/±2×2.5%0.4Dyn11           
Yzn11    
Yyn0
33535/5104
5043780/745
6350930/890
80601120/1070
100751350/1285
125851615/1540
1601001975/1880
2001202330/2225
2501402735/2610
3151703275/3120
4002003865/3675
5002404625/4400
63032053004.5
8003806415
10004508800
125053010260
160063012400
2000720148005
250086516300
The full load loss “/” is followed by the data of the vector group Yyn0

* Above specification may be changed to improve performance.

* Transformer of other specification than listed above can be made to order.

Product Overview
  • S(B)H21-NX2 (Energy Efficiency Level 2): This 10kV oil-immersed amorphous alloy transformer carries the advanced "NX2" upgraded design. Its core uses a wound core structure that eliminates joint loss, and when matched with a vacuum oil-filling process, it notably enhances insulation performance—addressing the high insulation demands of industrial power use.
  • The cooling system has been optimized to a hybrid mode of oil-immersed self-cooling and forced oil circulation, allowing it to withstand long-term high-load operation without performance degradation. As a Level 2 energy-efficient product, its total loss is 35% lower than that of the S(B)H15 series, effectively cutting energy consumption for enterprises with continuous production.
  • It is highly suitable for power distribution scenarios in continuous-operation industries like steel and chemicals. Additionally, the transformer is fitted with a pressure relief valve and gas relay, which speeds up fault response by 50% and minimizes potential downtime losses.

Professional Equipment

Production Process



 Application

Exhibition(Dubai exhibition, US exhibition, Thailand exhibition, Philippines exhibition……)

Certificate(Power transformers with CE, ISO, KEMA, UL certificates and test reports.)

Target Market 



Company Profile

Guanggao Transformer is a professional transformer manufacturer. We produce single-phase, three-phase, dry-type, distribution, and high-voltage transformers (110 kV and above). We meet IEEE/ANSI/UL/CSA and IEC standards. Guanggao Transformer has nearly 25 years of transformer export experience. The company has modern laboratory construction, such as high-voltage test hall, within which there is a 3000kV lightning impulse testing device, and some advanced testing equipment, such as CA-21 moisture analyzer from Mitsubishi, American Fluke Ti30 infrared image detector, American RM-3WE three dimensional vibration. And it was identified as the national power transformer energy efficiency testing laboratories in 2011.

The company has undertaken the National Olympic Security Power Project, the National 851 project, the whole construction of the Guangzhou Asian Games, Guangzhou BRT and other important security power projects. The products used in the above projects are highly safe and in a reliable operation throughout the country. Also, these products are exported to Myanmar, Madagascar, Malaysia,other countries. Enjoying a good reputation on the electromechanical market, "Guanggao Brand"was identified as Guangdong famous brand, the product was identified as the National Energy Efficiency Star Products and Brand-Name Products in Guangdong Province.If you have transformer needs, please contact us.

Contact us
  •    Add: No. 15, Yunpu 1st Road, Yunpu Industrial Zone, Huangpu, Guangzhou, Guangdong, China
  •    Tel: (+86)-020-82505003
  •    Email: ggelectric@gz-gg.com
Product Tags: 2500kVA Oil Immersed Distribution Transformer   Energy Efficiency Level 2 Amorphous Alloy Transformer   10kV Power Transformer  
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