Hunan Hentg Power Electric Technology Co., Ltd.
| Payment Terms | L/C,D/A,D/P,T/T |
| Supply Ability | 4000units\year |
| Delivery Time | 25-40 |
| Packaging Details | wooden |
| Rated Capacity | 1250 To 1500kVA |
| High Voltage | 33kV |
| Low Voltage | 11kV |
| Frequency | 50 Hz / 60 Hz |
| Oil Box Salt Spray Protection Rating | C3/C4/C5 |
| Winding Material | All Aluminum\Copper |
| Usage | Industrial Power Distribution,Commercial,Utility Distribution,Renewable Energy Integration |
| Warranty | 1Year |
| Brand Name | HENTG POWER |
| Model Number | S11 |
| Certification | CE,ISO9001，IEC60076 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C,D/A,D/P,T/T | Supply Ability | 4000units\year |
| Delivery Time | 25-40 | Packaging Details | wooden |
| Rated Capacity | 1250 To 1500kVA | High Voltage | 33kV |
| Low Voltage | 11kV | Frequency | 50 Hz / 60 Hz |
| Oil Box Salt Spray Protection Rating | C3/C4/C5 | Winding Material | All Aluminum\Copper |
| Usage | Industrial Power Distribution,Commercial,Utility Distribution,Renewable Energy Integration | Warranty | 1Year |
| Brand Name | HENTG POWER | Model Number | S11 |
| Certification | CE,ISO9001，IEC60076 | Place of Origin | CHINA |
| High Light | low noise oil immersed transformer ，33kV 11kV distribution transformer ，high voltage transformer for rural power | ||
Product Overview
This high-voltage distribution transformer (1250–1500kVA, 33kV/11kV) features an advanced oil-immersed capacitor-type structure designed for long-term operation in African rural electrification projects. With its inherently low noise, superior heat dissipation, and stable temperature management, it delivers reliable step-down performance even in remote areas where load variations and ambient temperatures can be challenging.
Engineered to support community distribution lines, agricultural facilities, rural mini-grids, and township infrastructure, it ensures dependable voltage output and stable service throughout its operating life.
Key Selling Points
Low Noise Performance for Community Applications
Special acoustic optimization keeps operational sound minimal, suitable for villages, schools, clinics and residential proximity.
Enhanced Heat Dissipation System
Large-surface radiators and efficient oil circulation improve thermal exchange, supporting continuous operation during peak rural loads.
Low Temperature Rise for Long-Term Stability
Optimized coil and tank design reduce internal temperature rise, improving durability and boosting transformer lifespan.
Reliable High-Voltage Step-Down Capability
Smooth transformation from 33kV/11kV ensures consistent distribution quality for rural grids with limited infrastructure.
Rugged Outdoor Construction
Weather-resistant tank and sealed system provide dependable service across hot, dusty and humid African environments.
Technical Specifications
| Parameter | Specification |
|---|---|
| Rated Capacity | 1250–1500 kVA |
| Primary Voltage | 33kV / 11kV |
| Secondary Voltage | 0.433kV |
| Frequency | 50Hz / 60Hz |
| Phase | Three-phase |
| Cooling Method | ONAN |
| Vector Group | Dyn11 |
| Tap Changer | Off-circuit tap changer |
| Tap Range | ±2×2.5% |
| Insulation Level | IEC 60076 compliant |
| Installation Type | Outdoor |
| Protection Structure | Fully sealed tank |
| Application | Rural distribution networks |
Challenges in Rural Grids & Our Solutions
Challenge:
Many African rural areas experience unstable voltage due to long feeder distances, variable loading, and insufficient network reinforcement. This can affect community power supply reliability and reduce the lifespan of local equipment.
Our Solution:
This transformer uses a high-stability step-down system, improved insulation, and a temperature-controlled oil circulation design that maintains consistent internal operating conditions even during voltage irregularities. Its low noise, strong thermal management, and sealed outdoor structure ensure steady output, reduced maintenance needs, and continuous service for rural distribution projects.
FAQ
Q1: Is this transformer suitable for areas with weak rural infrastructure?
Yes. It is designed for locations with long distribution distances and fluctuating supply quality. Its stable voltage control and strong thermal capacity ensure consistent operation even where the grid is not fully reinforced.
Q2: How does the transformer maintain low noise in outdoor rural environments?
The core structure is optimized with improved lamination technology and vibration-reduction measures. This minimizes humming and makes it suitable for installation close to residential clusters, schools, or community centers.
Q3: Can this model be customized for specific rural electrification projects?
Absolutely. Voltage ratios, tap positions, installation arrangements, and protection options can be tailored according to the project’s engineering layout or local utility standards.
Q4: What is the expected maintenance level for long-term outdoor use?
The sealed tank structure significantly reduces routine maintenance requirements. Periodic inspections are simple, focusing mainly on oil condition and external components. This makes it highly suitable for remote areas where maintenance access is limited.
Who We Are & What We Provide
We are a professional transformer manufacturer offering IEC-compliant oil-immersed and dry-type distribution transformers ranging from 30kVA to 3150kVA.
Through advanced production, strict quality control, and fast project response, we supply reliable power solutions for utilities, EPC contractors, and rural electrification programs across Africa.
Our team supports custom engineering, technical drawings, on-time delivery, and long-term after-sales support to ensure your project operates smoothly from installation to service life completion.
Call to Action
Get a fast quotation and technical drawing for your rural power project today.
Company Details
Business Type:
Manufacturer
Year Established:
2011
Total Annual:
300-500MVA
Employee Number:
150~200
Ecer Certification：
Verified Supplier
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