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Hunan Hentg Power Electric Technology Co., Ltd.

  • China,Changsha ,Hunan
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China Auto Transformer 200 to 1250kVA 33kV 11kV Reliable Voltage Regulation for Africa
China Auto Transformer 200 to 1250kVA 33kV 11kV Reliable Voltage Regulation for Africa

  1. China Auto Transformer 200 to 1250kVA 33kV 11kV Reliable Voltage Regulation for Africa
  2. China Auto Transformer 200 to 1250kVA 33kV 11kV Reliable Voltage Regulation for Africa

Auto Transformer 200 to 1250kVA 33kV 11kV Reliable Voltage Regulation for Africa

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Payment Terms T/T,D/P,D/A,L/C
Supply Ability 4000units\year
Delivery Time 25-40
Packaging Details wooden
Rated Capacity 200 to 1250kVA
High Voltage 33kV
Low Voltage 11kV
Installation Type Outdoor / Ground Mounted
Cooling Method ONAN (Oil Natural Air Natural)
Usage Industrial Power Distribution,Commercial,Utility Distribution,Renewable Energy Integration
Customized Accept
Warranty 1Year
Brand Name HENTG POWER
Model Number Auto Transformer
Certification CE,ISO9001,IEC60076
Place of Origin CHINA

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  1. Product Details
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Product Specification

Payment Terms T/T,D/P,D/A,L/C Supply Ability 4000units\year
Delivery Time 25-40 Packaging Details wooden
Rated Capacity 200 to 1250kVA High Voltage 33kV
Low Voltage 11kV Installation Type Outdoor / Ground Mounted
Cooling Method ONAN (Oil Natural Air Natural) Usage Industrial Power Distribution,Commercial,Utility Distribution,Renewable Energy Integration
Customized Accept Warranty 1Year
Brand Name HENTG POWER Model Number Auto Transformer
Certification CE,ISO9001,IEC60076 Place of Origin CHINA
High Light 33kV auto transformer for grid expansion11kV power distribution transformer with voltage regulation1250kVA auto transformer for urban rural grids
Product Overview

This Auto Transformer system (200–1250kVA, 33kV/11kV) is designed to support Africa’s rapidly expanding urban and rural distribution networks. With optimized voltage regulation, low-loss performance and strong adaptability to unstable feeder lines, it ensures continuous and efficient power delivery for infrastructure development, utility upgrades, mini-grids, and rural electrification programs. Its compact electrical design and simplified installation make it ideal for large-scale power distribution projects.

Key Advantages
  • Reliable Step-Down Voltage Performance
    Ensures stable 11kV output under fluctuating 33kV input, suitable for long-distance grid expansion corridors.
  • High System Efficiency
    Optimized electromagnetic design reduces operational losses, lowering lifetime operating cost for EPC and utility customers.
  • Ideal for Urban & Rural Grid Upgrade Projects
    Supports mixed-load environments such as villages, towns, industrial parks and new residential blocks.
  • Reduced Footprint & Simplified Structure
    Lighter and more compact than traditional dual-winding transformers, making installation easier in constrained locations.
  • Built for Harsh Field Conditions
    Performs reliably under high ambient temperatures, dusty environments and uneven load cycles common in African regions.
Technical Highlights (Specification Table)
Attribute Details
Rated Capacity 200–1250 kVA
Primary Voltage 33 kV
Secondary Voltage 11 kV
Frequency 50/60 Hz
Vector Group Dyn11 / Yyn0 (Optional)
Cooling Method ONAN
Winding Material Copper / Al-Copper Hybrid
Insulation Class A / F
Protection Options Temperature Monitoring, Fault Indication
Installation Mode Outdoor / Pole-Mounted / Ground-Mounted
Compliance IEC Standards
Custom Service Voltage, Impedance, Terminals, Tap Settings
Challenges & Practical Solutions
Project Scenario — Rural grid expansion along long feeder routes
Challenge:

As African utilities extend their networks, many rural expansion lines experience voltage drop due to long transmission distance, seasonal demand variations and insufficient upstream supply. This leads to unstable power for farms, water pumps, clinics and local industries.

Our Solution:

The 33kV/11kV Auto Transformer stabilizes voltage along extended feeders by delivering consistent 11kV output despite upstream fluctuations. Its efficient regulation design reduces drop on long distribution lines, enhances supply reliability and supports balanced load development for community services, agricultural facilities and township electrification projects.

FAQ
Q: Can this transformer operate efficiently on long rural distribution lines?
Yes. Its optimized voltage regulation curve ensures stable output even when input conditions vary along long feeder routes.
Q: Is it suitable for both utility expansion and private EPC projects?
Absolutely. The design fits national utility upgrades, rural electrification tenders, industrial mini-grid expansions and mixed-load community projects.
Q: Can the transformer be customized for specific tap settings?
Yes. Tap ranges, winding material and secondary configurations can be customized depending on project design and grid conditions.
Q: Does it support outdoor installation in harsh climates?
The unit is engineered for outdoor operation with durable insulation, corrosion-resistant components and stable cooling performance.
Who We Are — What We Provide

Hentg Power is a professional power equipment manufacturer delivering distribution transformers, auto transformers and power solutions for global EPC contractors, utilities and industrial users.

Through engineering expertise, IEC-compliant production, strict quality control and strong customization capability, we supply reliable equipment for weak-grid regions, rural electrification, substations and infrastructure upgrades.

Call to Action

Empower your next grid expansion project with stable and reliable voltage performance—contact us today for a tailored solution.

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • Business Type:

    Manufacturer

  • Year Established:

    2011

  • Total Annual:

    300-500MVA

  • Employee Number:

    150~200

  • Ecer Certification:

    Verified Supplier

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Get in touch with us

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  • Hunan Hentg Power Electric Technology Co., Ltd.
  • Room905, D6 building, CCSP Industrial Park, Yuelu District, Changsha,Hunan province, China
  • https://www.hentgpower.com/

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