110kV 40MVA Oil Type Power Transformer for African Power Projects
01-13 2026 | By:
By Ztelec Yuguang Power Transformer Factory
Product Overview
The 110kV 40MVA oil immersed power transformer is a key transmission and distribution transformer widely used in African national grids, industrial substations, mining projects, and renewable energy power stations. It plays a vital role in stepping down high-voltage transmission power to stable medium-voltage levels for regional distribution.
Manufactured by Ztelec Yuguang Power Transformer Factory, this transformer is specially designed to meet African climate conditions, including high temperatures, heavy dust, humidity, and long-distance power transmission requirements.
Design Features
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Advanced core material with low no-load loss
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High thermal stability oil-paper insulation system
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Strong short-circuit withstand capability
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Optimized cooling structure for tropical climates
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Low noise and vibration design
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Long service life with minimal maintenance
Application Scenarios in Africa
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National 110kV transmission substations
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Mining and metallurgy power systems
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Cement, steel and industrial plants
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Wind and solar power grid integration
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Urban and rural power network expansion
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EPC turnkey power projects
Advantages of Ztelec Yuguang Transformers
Ztelec Yuguang Power Transformer Factory is a professional transformer manufacturer with years of export experience to Africa, Middle East, and Southeast Asia. Our advantages include:
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Full compliance with IEC, ANSI and utility standards
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Customized voltage, capacity and impedance design
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Strict factory quality inspection system
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Complete routine and type testing reports
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Competitive factory price with stable delivery
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Long-term technical support and spare parts service
Quality Control & Testing
Each transformer undergoes:
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Winding resistance test
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Ratio and vector group test
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No-load and load loss test
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Insulation resistance test
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Applied and induced voltage test
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Oil dielectric strength test
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Temperature rise test (if required)
All test reports are provided before shipment.
Packing & Transportation
Transformers can be shipped with oil filled or oil drained, suitable for long-distance sea transportation to African ports. Professional export packing ensures safety during loading, shipping, and inland transport.
Why African Customers Choose Ztelec Yuguang
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Proven performance in African power projects
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Flexible customization for local grid conditions
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Reliable long-term operation record
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Direct factory cooperation, no middleman
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Professional international sales and engineering support
Typical Model
S11-40000/110
SFZ11-40000/110
SZ11-40000/110
110kV 40MVA Oil Immersed Power Transformer
Manufacturer: Ztelec Yuguang Power Transformer Factory
Technical Specification Table
(Professional format for utilities & EPC engineers)
| Item | Specification |
|---|---|
| Transformer Type | Oil Immersed Power Transformer |
| Rated Capacity | 40 MVA |
| Rated Voltage | HV: 110 kV / LV: 33 kV or 11 kV (customizable) |
| Voltage Regulation | ±8 × 1.25% on HV side |
| Frequency | 50 / 60 Hz |
| Phase | Three Phase |
| Cooling Method | ONAN / ONAF |
| Vector Group | YNd11 / Dyn11 (optional) |
| Impedance | 10% – 12% (customized) |
| Insulation Level | IEC / ANSI Standard |
| Insulation Class | Class A (oil-paper insulation) |
| Temperature Rise | Oil: ≤60K, Winding: ≤65K |
| No-load Loss | As per IEC or utility requirement |
| Load Loss | Optimized low loss design |
| Oil Type | Mineral oil / FR3 optional |
| Tank Type | Welded corrugated / radiators |
| Tap Changer | Off-load / On-load tap changer |
| Altitude | ≤1000m (customizable for high altitude) |
| Ambient Temperature | Up to 50°C suitable for Africa |
| Standard | IEC 60076 / IEEE / GB |
| Testing | Routine, Type, Special Tests available |
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