Specifications
Model Number :
S11/S13/S20
Type of cooling :
ONAN oil is self-cooled
MOQ :
1 piece
Delivery Time :
7-14 work days
Application :
Substation
Payment Terms :
L/C,D/A,D/P,T/T,Western Union
Rated Voltage :
11kV / 13.8kV / 24kV / 33kV / 34.5kV
Ambient Temperature :
-25°C to +55°C
Price :
650-18,000 / piece
Phase :
Three
Supply Ability :
5000pcs/year
Capacity/KVA :
25kVA–5000kVA / Up to 1250A
Rated frequency :
50Hz/60Hz
Short Circuit Withstand :
20kA–31.5kA (3s)
Certification :
CE,UL,ISO
Standards :
IEC 60076 / IEC 62271 / IEC 61439
Place of Origin :
Henan, China
Protection Degree :
IP54 / IP65
Brand Name :
TNNPI
Cooling / Insulation :
ONAN / Air Insulated
Packaging Details :
Export standard packaging
Customization :
Voltage, Capacity, Current, IP Rating, Color, OEM Logo
Description

New Electric Power three winding oil immersed power transformer is designed for medium and high voltage power transmission systems, supporting 66kV/33kV/11kV voltage conversion for substations, mining plants, industrial facilities and grid electrification projects. It provides stable power distribution, high efficiency and long service life in harsh environments.


High Voltage Three Winding Design for Flexible Power Distribution

Adopts three winding structure to realize multiple voltage level conversion within one transformer, reducing equipment investment and improving substation efficiency. Suitable for 66kV, 33kV and 11kV power networks, mining power supply and regional grid expansion projects.


Durable Oil Immersed Cooling System for Harsh Environments

Uses high-quality mineral insulating oil and ONAN/ONAF cooling technology to provide excellent heat dissipation and reliable continuous operation. The sealed tank structure protects internal components from moisture, dust and extreme outdoor conditions in Africa markets.


High Efficiency Core & Copper Windings for Energy Saving Operation

Equipped with premium grain oriented silicon steel core and oxygen-free copper windings to reduce no-load loss, load loss and operating costs. Optimized electromagnetic design ensures stable voltage regulation and efficient power transmission.


Built for Substations, Mining & Infrastructure Power Projects

Designed according to IEC 60076 standards, this transformer provides reliable performance for utility grids, mining plants, renewable energy connection, industrial parks and large-scale electrification projects.


Typical Applications

  • 66kV / 33kV Substation Power Supply
  • Mining Plant Electrical Distribution
  • Industrial Power Infrastructure
  • Utility Grid Electrification Projects
  • Solar & Renewable Energy Grid Connection
  • Africa Rural and Regional Power Networks

Main Technical Parameters

Item Specification
Product Type Three Winding Oil Immersed Power Transformer
Rated Voltage 66kV / 33kV / 11kV
Capacity Range 5MVA - 63MVA (Customized)
Cooling Type ONAN / ONAF
Winding Material Copper
Frequency 50Hz / 60Hz
Insulation Class Oil Immersed
Standard IEC 60076
Installation Outdoor Substation
Tap Changer Off Circuit Tap Changer / OLTC Optional
Application Grid, Mining, Industrial Power Supply


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Three Winding Transformer 66KV 33KV 11KV Oil Immersed Power Transformer 50Hz Dyn11 for Substation Grid Distribution

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Model Number :
S11/S13/S20
Type of cooling :
ONAN oil is self-cooled
MOQ :
1 piece
Delivery Time :
7-14 work days
Application :
Substation
Payment Terms :
L/C,D/A,D/P,T/T,Western Union
Contact Supplier
video
Three Winding Transformer 66KV 33KV 11KV Oil Immersed Power Transformer 50Hz Dyn11 for Substation Grid Distribution
Three Winding Transformer 66KV 33KV 11KV Oil Immersed Power Transformer 50Hz Dyn11 for Substation Grid Distribution

Henan New Electric Power Co.,ltd.

Verified Supplier
1 Years
henan, zhengzhou
Since 2017
Business Type :
Manufacturer, Distributor/Wholesaler, Seller, Exporter
Total Annual :
>30000+
Employee Number :
260~300
Certification Level :
Verified Supplier
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