As a professional rectifier transformer supplier, we supply high‑voltage transformer rectifier for steel mill rolling mill, DC motor power supply, variable‑frequency speed regulation. Oil‑immersed ONAN cooling 1000kVA 10kV Dyn11 rectifier transformer with flexible multi‑winding output, stable short‑circuit impedance, reliable indoor‑type operation.
This oil‑immersed rectifier transformer adopts three‑phase three‑limb iron‑core structure. Multiple high‑voltage and low‑voltage windings can be fitted on each core column to save installation footprint. Painted light‑grey metal tank shell with corrugated radiator for effective heat dissipation, compact overall dimension, heavy‑duty steel tank body with high mechanical strength for long‑term workshop service.
It supports single‑unit independent operation or parallel multi‑unit joint operation for flexible system configuration. Equipped with multiple low‑voltage winding sets which can work individually or in parallel. High short‑circuit impedance between windings guarantees stable multi‑channel output and operational safety.
Our transformer rectifier fits steel mill rolling mill AC‑AC variable‑frequency drive power supply and rectified DC motor drive. It realizes diverse connection modes including one transformer for multi‑machines and multiple transformers for one machine to satisfy complicated industrial working conditions. As a trusted high voltage rectifier transformer supplier, our product delivers outstanding anti‑shock performance, low noise and little maintenance workload.
Direct factory supply eliminates intermediate markup to achieve competitive pricing. Strictly manufactured under GB/T18494.1 standard. Mature production process ensures stable product quality and short delivery lead‑time. Custom winding, voltage and capacity solutions are available for different industrial rectification projects.
Specifications & Parameters
Specifications are customizable to meet exact project needs. Typical technical parameters for our oil immersed rectifier transformer include:
| Category | Specification / Description |
| Model | 1000 kVA /10KV |
| Rated Capacity |
1000kVA |
| Rated Voltage | 10000/575 V |
| Rated Current | 57.7 A / 1004.1 A |
| Phase | 3 phase |
| Frequency | 50hz |
| Vector Group | Dyn11 |
| Cooling Method | ONAN Oil Natural Air Natural |
| Application Condition | Indoor‑type |
| Tap Voltage | 10500V /10000V /9500V |
| Impedance Voltage | 5.55 % |
| No‑load Loss | 4806 W |
| Load Loss | 12050 W |
| Total Weight | 4270 kg |
| Iron Core Weight | 2290 kg |
| Insulation Oil Weight | 890 kg |
| Manufacture Standard | GB/T18494.1 |
| Parameters such as no-load loss, load loss, and efficiency comply with or exceed GB/T 6451 and international standards for energy-efficient performance. Exact values are provided based on customer voltage, capacity, and duty cycle requirements. | |
Packaging, Warranty & Certifications Packaging：
The high voltage rectifier transformer is fixed with steel support for sea‑worthy export packing; internal anti‑moisture protection for long‑distance ocean transport.
Warranty：
18‑month factory warranty from the date of shipment. Lifelong technical consultation and spare‑part support are offered by our rectifier transformer supplier team. Extended warranty options available upon request.
Certifications & Testing：
Manufactured complying with GB/T18494.1 industrial standard. Accept third‑party inspection. Custom testing reports can be provided upon request..
Use Scenarios
Power Supply for Steel Mill DC Motor Drives
In steel manufacturing plants, the employment of DC motor drives demands consistent, high-quality DC power. The rectifier transformer supplies this power by converting high-voltage AC to stable DC current vital for controlling rolling mill motors and drive systems. Its robust mineral oil cooling and multi-winding configurations enable continuous operation under severe industrial conditions while adhering to IEC 60076 standards. Integration into existing motor control centers enhances overall plant reliability and permits scalability as production demands evolve.
Integration with AC-DC Variable Frequency Drive Systems in Metallurgical Applications
This transformer rectifier unit plays an essential role in AC-DC variable frequency drive systems supporting metallurgical processes, where precise speed and torque control are requisite. By providing clean and harmonic-minimized DC power through multi-pulse rectification compatibility, it ensures compliance with power quality regulations and reduces electromagnetic interference. The unit fits seamlessly within complex electrical panels, providing scalable power transformation solutions tailored for harsh environments typical of steel plant operation, boosting process efficiency and facilitating preventive maintenance schedules.
What materials are used in your Oil Immersed Rectifier Transformer?
Our rectifier transformer features high-conductivity copper windings and a core made of cold-rolled grain-oriented silicon steel. The robust mineral oil insulation and ONAN cooling system enhance durability and electrical performance under heavy industrial loads.
Can you customize the transformer specifications for specific industrial requirements?
Yes, we offer tailored options for rated capacity, primary and secondary voltages, winding configurations, and pulse compatibility to suit your project needs. As experienced rectifier transformer manufacturers, we ensure each unit matches your steel mill’s precise power demands.
How do you ensure the reliability of your transformer for steel mill DC motors?
We design our transformer with a compact three-phase core, multi-group low voltage windings, and high short-circuit impedance, all compliant with IEC 60076 and GB/T standards. These features secure stable operation and low losses, critical for demanding DC motor and AC-DC drive applications.
What support do you provide regarding installation and delivery times?
Typically, delivery ranges from 8 to 16 weeks depending on your customized transformer rectifier specifications. Our technical team offers guidance to ensure smooth installation and integration into your existing steel mill power system for optimal performance.
