Description
11kV Oil Immersed Transformer | Low Loss Outdoor Distribution Transformer
11kV oil immersed transformer is a high-efficiency three-phase power distribution equipment widely used in national grid construction, industrial parks, mining projects and municipal power supply. Designed for 11kV medium voltage power systems, this oil-cooled transformer adopts fully sealed structure and high-quality core materials, featuring ultra-low loss, strong overload capacity and excellent outdoor environmental adaptability. It is the mainstream power transformation solution for Africa, Southeast Asia, Middle East and other global emerging power markets.
Xingniu 11kV oil immersed transformers cover S11, S13, S20 and S22 high-efficiency series. All products strictly comply with IEC 60076 international standards. With stable performance, low noise and long service life, they effectively solve common problems such as grid voltage fluctuation, high power consumption and poor outdoor durability of traditional distribution transformers.
Core Product Features & Advantages
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Ultra-Low Energy Loss: Adopts high-permeability CRGO silicon steel sheet and optimized laminated core structure. No-load loss and load loss are greatly reduced, effectively lowering long-term grid operation costs.
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Excellent Heat Dissipation & Stability: Standard ONAN oil natural air natural cooling mode. The circulating insulating oil ensures uniform heat dissipation, avoiding local overheating during long-term full-load and overload operation.
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Fully Sealed & Maintenance-Free: Hermetically sealed tank design prevents moisture, dust and air oxidation. No need for regular oil replacement or maintenance, greatly reducing post-operation maintenance pressure.
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Strong Outdoor Adaptability: Reinforced anti-corrosion tank and high-temperature resistant insulating oil. It stably operates in high temperature, humid, dusty and alpine outdoor environments.
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High Safety & Impact Resistance: Standard Dyn11 winding group balances three-phase voltage, restrains harmonic interference, and owns strong short-circuit resistance to avoid sudden tripping and equipment damage.
- Full Customization Support: Customizable capacity, voltage ratio, frequency, protection configuration and external structure to adapt to different national grid standards and project demands.
Technical Specifications
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Item
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Standard Parameter
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Product Series
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S11 / S13 / S20 / S22 High-efficiency Series
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Rated Voltage
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11kV / 0.4kV (Customizable)
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Rated Capacity
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50kVA – 2500kVA (Customizable)
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Frequency
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50Hz / 60Hz
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Winding Material
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100% Pure Copper Winding
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Cooling Method
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ONAN (Oil Natural Air Natural)
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Vector Group
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Dyn11 (Standard)
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Short-circuit Impedance
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4.5% / 6% (Optional)
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Insulation Grade
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Class A
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Working Temperature Range
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-25°C ~ +45°C
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Protection Grade
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IP00 / IP20 / Custom Outdoor Grade
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Application Scenarios
11kV oil immersed transformers are core medium-voltage distribution equipment, widely adopted in global utility and industrial power projects:
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Urban and rural power grid renovation & distribution station projects
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Industrial parks, factories and manufacturing power supply systems
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Mining, petroleum and chemical industrial power distribution
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Highway, railway and municipal engineering power facilities
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Remote area power supply and large-scale outdoor power distribution projects
Pressure relief valve
Certification & Quality Assurance
All Xingniu 11kV oil immersed transformers are manufactured in strict accordance with IEC 60076 international standards. The whole process implements IQC, IPQC and OQC full quality inspection. All units pass full-type tests before delivery. Products have obtained CE, ISO9001 and other mainstream certifications, fully meeting market access standards in Europe, Africa, Southeast Asia, the Middle East and other regions.
Custom & Service Support
We provide one-stop customized services for special voltage, non-standard capacity, high-altitude adaptation, tropical anti-corrosion and low-temperature resistance. With stable bulk production capacity and fast delivery cycle, we support global project orders and OEM cooperation. Professional technical team provides free model selection, project solution guidance and lifelong after-sales support.
Transformer gas relay
FAQ
Q1: What are the advantages of 11kV oil immersed transformer compared with dry type transformer? A: 11kV oil immersed transformers feature lower cost, better heat dissipation, stronger overload resistance and longer outdoor service life. They are more suitable for large-capacity outdoor grid and industrial power distribution projects.
Q2: Can the transformer adapt to high temperature and rainy tropical areas? A: Yes. We support customized tropical anti-corrosion treatment, waterproof and moisture-proof design, which perfectly adapts to high-temperature, high-humidity and rainy outdoor environments.
Q3: What efficiency series can be provided? A: We supply full series of high-efficiency models including S11, S13, S20 and S22, meeting different energy-saving and budget requirements of global projects.
Get Quotation
If you need high-quality, low-loss 11kV oil immersed transformers for your power grid, industrial or municipal projects, please contact Xingniu Transformer. We offer free technical consultation, customized solutions and factory-direct wholesale prices.
