YIMAI Oil-Immersed Power Transformer | 10kV/35kV High-Efficiency Distribution Transformer with On-Load Tap-Changing
The YIMAI Oil-Immersed Power Transformer is a heavy-duty, high-capacity power conversion solution engineered for medium-voltage electrical networks. Sold by Shanghai YIMAI Electric (一迈电气), this transformer features an oil-immersed cooling structure, on-load tap-changing technology, and robust construction, providing reliable voltage transformation and power distribution for industrial, mining, and
- Information
Product Overview
The YIMAI Oil-Immersed Power Transformer is a professional-grade voltage conversion device designed for high-voltage power transmission and distribution systems. Built with an oil-immersed cooling structure and on-load tap-changing mechanism, this transformer efficiently converts high-voltage electrical energy (10kV/35kV) to low-voltage (400V/220V) for industrial and infrastructure use. With capacities ranging from 500kVA to 10,000kVA, it is the ideal choice for large-scale power transmission projects and heavy industrial applications.
Core Technical Advantages
-
Oil-Immersed Cooling & Insulation
- The core and windings are fully immersed in insulating mineral oil, providing excellent electrical insulation and efficient heat dissipation, enabling continuous full-load operation even in high-temperature environments.
- The corrugated fin design and top-mounted conservator tank effectively manage oil expansion and contraction, preventing oil oxidation and moisture ingress, extending the service life to 30+ years.
-
On-Load Tap-Changing Technology
- Adopts advanced on-load tap-changing (OLTC) mechanism, allowing voltage regulation without interrupting power supply to loads, ensuring continuous operation of critical equipment.
- Achieves high regulation accuracy (±0.5%) and fast response time (<0.5 seconds), effectively eliminating voltage sags and surges in unstable power grids.
-
High-Efficiency & Low-Loss Design
- Uses high-purity copper windings and amorphous alloy cores (optional), minimizing no-load loss and reducing energy consumption by up to 70% compared to traditional transformers.
- The low noise design (<65dB) ensures minimal environmental impact in industrial and residential areas.
-
Robust & Durable Construction
- Heavy-duty metal enclosure with IP54 protection rating, resistant to dust, moisture, and mechanical impacts, suitable for harsh industrial environments.
- Modular design allows for easy access to internal components, simplifying installation and maintenance.
- Equipped with a built-in temperature sensor and oil level monitoring system, providing real-time protection against over-temperature and oil leakage.
Technical Specifications (Typical Values)
| Parameter | 10kV-2000kVA Model | 35kV-6300kVA Model |
|---|---|---|
| Model | YIMAI-OT-2000kVA | YIMAI-OT-6300kVA |
| Type | Oil-Immersed Power Transformer (OLTC) | Oil-Immersed Power Transformer (OLTC) |
| Rated Voltage (High Side) | 10kV AC (Three-Phase) | 35kV AC (Three-Phase) |
| Rated Voltage (Low Side) | 400V AC (Three-Phase) | 400V AC (Three-Phase) |
| Rated Capacity | 2000kVA | 6300kVA |
| Core Material | Amorphous Alloy / Silicon Steel (Optional) | Amorphous Alloy / Silicon Steel (Optional) |
| Winding Material | High-Purity Copper (T2) | High-Purity Copper (T2) |
| Cooling Method | Oil-Immersed Natural Cooling (ONAN) / Forced Air Cooling (ONAF) | Oil-Immersed Natural Cooling (ONAN) / Forced Air Cooling (ONAF) |
| Tap-Changing Type | On-Load Tap-Changing (OLTC) | On-Load Tap-Changing (OLTC) |
| Protection Degree | IP54 (Outdoor/Indoor Use) | IP54 (Outdoor/Indoor Use) |
| Operating Temperature | -25°C~45°C, 20~90%RH (Non-Condensing) | -25°C~45°C, 20~90%RH (Non-Condensing) |
| Dimensions (W×D×H) | 3000×2500×3500mm | 4500×3500×4500mm |
| Net Weight | ~8000kg | ~22,000kg |
| Compliance | GB/T 1094, IEC 60076, CE, ISO 9001 | GB/T 1094, IEC 60076, CE, ISO 9001 |
Target Applications
- Power Substations: Primary and secondary voltage transformation for urban and rural power grids.
- Large Industrial Manufacturing: Power supply for heavy machinery, rolling mills, and large motors in factories.
- Mining & Quarrying: Voltage conversion for mining equipment, crushers, and conveyor systems in remote areas.
- Oil & Gas Platforms: Power transformation for drilling rigs, pumps, and control systems in offshore and onshore facilities.
- Renewable Energy: Grid connection for large wind farms and solar power plants.
- Infrastructure: Power supply for water treatment plants, transportation systems, and public facilities.
Why Choose YIMAI Oil-Immersed Transformer (上海一迈电气)?
YIMAI (上海一迈电气) is a leading manufacturer of power transformers, with decades of experience serving global heavy industry and infrastructure customers. Our oil-immersed transformers are rigorously tested to meet national and international standards (GB/T 1094, IEC 60076, CE, ISO), ensuring exceptional reliability, efficiency, and durability. Purchasing directly from Shanghai YIMAI on Taobao guarantees genuine products, local fast shipping, and professional after-sales support for large-scale power projects.
After-Sales Service & Support
- 3-year warranty for all transformer products.
- Lifetime technical support via Shanghai YIMAI Taobao store, including on-site installation, commissioning, and maintenance.
- Custom solution design for specific voltage, capacity, and environmental requirements.
- Fast response to emergency repair requests, minimizing downtime for critical operations.
FAQ (Frequently Asked Questions)
Q1: What is the difference between an oil-immersed transformer and a dry-type transformer?
A: Oil-immersed transformers offer better heat dissipation and lower cost, with a longer service life, while dry-type transformers are safer and more environmentally friendly, suitable for indoor use. This model is an oil-immersed transformer, ideal for high-capacity industrial and substation applications.
Q2: Can this transformer handle a 2000kVA load continuously?
A: Yes, the 2000kVA model is rated for 2000kVA continuous operation, with a short-circuit withstand current of 31.5kA (3s), ensuring stable operation under normal and fault conditions.
Q3: What is the meaning of on-load tap-changing?
A: On-load tap-changing (OLTC) allows voltage regulation without interrupting power supply to loads, making it ideal for critical applications that cannot tolerate any power interruption. This transformer uses OLTC technology for seamless voltage adjustment.
Q4: Is the transformer suitable for outdoor installation?
A: Yes, the standard enclosure is IP54 (outdoor use), resistant to rain, snow, and dust, making it suitable for long-term outdoor operation. For extremely harsh environments, we offer custom IP65 enclosures.
Q5: Does this transformer support remote monitoring?
A: Yes, it supports RS485/Modbus communication, enabling remote monitoring of oil temperature, load status, and fault conditions via smart grid systems.
Q6: What is the lifespan of this transformer?
A: With proper maintenance, the service life can reach 30+ years, making it a long-term investment for power transmission systems.
Q7: What is the warranty period?
A: All YIMAI oil-immersed transformer products come with a 3-year warranty, and Shanghai YIMAI provides lifetime technical support, including on-site maintenance and emergency repair services.
Product Overview
The YIMAI Oil-Immersed Power Transformer is a professional-grade voltage conversion device designed for high-voltage power transmission and distribution systems. Built with an oil-immersed cooling structure and on-load tap-changing mechanism, this transformer efficiently converts high-voltage electrical energy (10kV/35kV) to low-voltage (400V/220V) for industrial and infrastructure use. With capacities ranging from 500kVA to 10,000kVA, it is the ideal choice for large-scale power transmission projects and heavy industrial applications.
Core Technical Advantages
-
Oil-Immersed Cooling & Insulation
- The core and windings are fully immersed in insulating mineral oil, providing excellent electrical insulation and efficient heat dissipation, enabling continuous full-load operation even in high-temperature environments.
- The corrugated fin design and top-mounted conservator tank effectively manage oil expansion and contraction, preventing oil oxidation and moisture ingress, extending the service life to 30+ years.
-
On-Load Tap-Changing Technology
- Adopts advanced on-load tap-changing (OLTC) mechanism, allowing voltage regulation without interrupting power supply to loads, ensuring continuous operation of critical equipment.
- Achieves high regulation accuracy (±0.5%) and fast response time (<0.5 seconds), effectively eliminating voltage sags and surges in unstable power grids.
-
High-Efficiency & Low-Loss Design
- Uses high-purity copper windings and amorphous alloy cores (optional), minimizing no-load loss and reducing energy consumption by up to 70% compared to traditional transformers.
- The low noise design (<65dB) ensures minimal environmental impact in industrial and residential areas.
-
Robust & Durable Construction
- Heavy-duty metal enclosure with IP54 protection rating, resistant to dust, moisture, and mechanical impacts, suitable for harsh industrial environments.
- Modular design allows for easy access to internal components, simplifying installation and maintenance.
- Equipped with a built-in temperature sensor and oil level monitoring system, providing real-time protection against over-temperature and oil leakage.
Technical Specifications (Typical Values)
| Parameter | 10kV-2000kVA Model | 35kV-6300kVA Model |
|---|---|---|
| Model | YIMAI-OT-2000kVA | YIMAI-OT-6300kVA |
| Type | Oil-Immersed Power Transformer (OLTC) | Oil-Immersed Power Transformer (OLTC) |
| Rated Voltage (High Side) | 10kV AC (Three-Phase) | 35kV AC (Three-Phase) |
| Rated Voltage (Low Side) | 400V AC (Three-Phase) | 400V AC (Three-Phase) |
| Rated Capacity | 2000kVA | 6300kVA |
| Core Material | Amorphous Alloy / Silicon Steel (Optional) | Amorphous Alloy / Silicon Steel (Optional) |
| Winding Material | High-Purity Copper (T2) | High-Purity Copper (T2) |
| Cooling Method | Oil-Immersed Natural Cooling (ONAN) / Forced Air Cooling (ONAF) | Oil-Immersed Natural Cooling (ONAN) / Forced Air Cooling (ONAF) |
| Tap-Changing Type | On-Load Tap-Changing (OLTC) | On-Load Tap-Changing (OLTC) |
| Protection Degree | IP54 (Outdoor/Indoor Use) | IP54 (Outdoor/Indoor Use) |
| Operating Temperature | -25°C~45°C, 20~90%RH (Non-Condensing) | -25°C~45°C, 20~90%RH (Non-Condensing) |
| Dimensions (W×D×H) | 3000×2500×3500mm | 4500×3500×4500mm |
| Net Weight | ~8000kg | ~22,000kg |
| Compliance | GB/T 1094, IEC 60076, CE, ISO 9001 | GB/T 1094, IEC 60076, CE, ISO 9001 |
Target Applications
- Power Substations: Primary and secondary voltage transformation for urban and rural power grids.
- Large Industrial Manufacturing: Power supply for heavy machinery, rolling mills, and large motors in factories.
- Mining & Quarrying: Voltage conversion for mining equipment, crushers, and conveyor systems in remote areas.
- Oil & Gas Platforms: Power transformation for drilling rigs, pumps, and control systems in offshore and onshore facilities.
- Renewable Energy: Grid connection for large wind farms and solar power plants.
- Infrastructure: Power supply for water treatment plants, transportation systems, and public facilities.
Why Choose YIMAI Oil-Immersed Transformer (上海一迈电气)?
YIMAI (上海一迈电气) is a leading manufacturer of power transformers, with decades of experience serving global heavy industry and infrastructure customers. Our oil-immersed transformers are rigorously tested to meet national and international standards (GB/T 1094, IEC 60076, CE, ISO), ensuring exceptional reliability, efficiency, and durability. Purchasing directly from Shanghai YIMAI on Taobao guarantees genuine products, local fast shipping, and professional after-sales support for large-scale power projects.
After-Sales Service & Support
- 3-year warranty for all transformer products.
- Lifetime technical support via Shanghai YIMAI Taobao store, including on-site installation, commissioning, and maintenance.
- Custom solution design for specific voltage, capacity, and environmental requirements.
- Fast response to emergency repair requests, minimizing downtime for critical operations.
FAQ (Frequently Asked Questions)
Q1: What is the difference between an oil-immersed transformer and a dry-type transformer?
A: Oil-immersed transformers offer better heat dissipation and lower cost, with a longer service life, while dry-type transformers are safer and more environmentally friendly, suitable for indoor use. This model is an oil-immersed transformer, ideal for high-capacity industrial and substation applications.
Q2: Can this transformer handle a 2000kVA load continuously?
A: Yes, the 2000kVA model is rated for 2000kVA continuous operation, with a short-circuit withstand current of 31.5kA (3s), ensuring stable operation under normal and fault conditions.
Q3: What is the meaning of on-load tap-changing?
A: On-load tap-changing (OLTC) allows voltage regulation without interrupting power supply to loads, making it ideal for critical applications that cannot tolerate any power interruption. This transformer uses OLTC technology for seamless voltage adjustment.
Q4: Is the transformer suitable for outdoor installation?
A: Yes, the standard enclosure is IP54 (outdoor use), resistant to rain, snow, and dust, making it suitable for long-term outdoor operation. For extremely harsh environments, we offer custom IP65 enclosures.
Q5: Does this transformer support remote monitoring?
A: Yes, it supports RS485/Modbus communication, enabling remote monitoring of oil temperature, load status, and fault conditions via smart grid systems.
Q6: What is the lifespan of this transformer?
A: With proper maintenance, the service life can reach 30+ years, making it a long-term investment for power transmission systems.
Q7: What is the warranty period?
A: All YIMAI oil-immersed transformer products come with a 3-year warranty, and Shanghai YIMAI provides lifetime technical support, including on-site maintenance and emergency repair services.
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