Newtranstech specializes in high-power rectifier transformers seamlessly integrated with diode or thyristor rectifiers to form reliable transformer rectifier systems. These transformer rectifiers and transformer rectifier units feature highly optimized designs, making them ideal for large-scale primary aluminum electrolysis smelters as well as medium-sized industrial DC power applications.
Our regulation and rectifier transformer combinations — commonly known as rectiformers or transformer rectifier solutions — support typical 60-pulse aluminum potline configurations. They deliver excellent harmonic mitigation and superior process stability through five parallel 12-pulse rectifier groups with phase shifts of -12°, -6°, 0°, +6°, and +12°. Whether utilizing Double Star (DSS) or Double Bridge (DB) technology, our transformer rectifiers provide an ultra-wide DC voltage regulation range from 0V up to 2000V, ensuring efficient and stable DC power supply for demanding electrolytic processes.
Understanding the transformer rectifier machine definition is essential: a transformer rectifier combines voltage transformation with AC-to-DC conversion in one integrated system, unlike a standard power transformer that only steps voltage while keeping AC output. In contrast, rectifier vs transformer highlights the key difference — rectifier transformers are specially engineered to handle the non-sinusoidal currents, harmonics, and high thermal stresses associated with rectification, delivering the stable, low-ripple DC power required in heavy industrial environments.
Backed by over 50 years of focused expertise and hundreds of successfully commissioned units, we has established as a trusted manufacturer in high-voltage, high-power rectifier transformers and transformer rectifiers technology. Our transformers and rectifiers share highly optimized integration that maximizes efficiency, reduces footprint, and enhances overall system reliability.
Choose us for proven rectifier transformers, transformer rectifier units, and complete transformer rectifiers solutions that ensure smooth, interference-free DC output and long-term operational excellence in aluminum smelting, electrochemical rectification, and other heavy-duty industrial applications. Contact us today to discuss your specific requirements.
Product Features
• Flexible Multi-Pulse Technology
Supports 6-pulse, 12-pulse, 24-pulse, 48-pulse, and 60-pulse systems with precise phase-shift angles (-12°, -6°, 0°, +6°, +12°) to effectively reduce harmonics, improve grid compatibility, and enhance process stability.
• Ultra-Wide Voltage Regulation Range
Designed for demanding applications such as aluminum electrolysis, offering continuous regulation from 0 volts to potentially 2000 volts DC, perfectly matching varying numbers of series-connected cells.
• DSS and DB Technology Options
Double Star (DSS) configuration with interphase transformer is ideal for high-current, low-voltage applications; Double Bridge (DB) supports higher pulse numbers for the strictest harmonic and stability requirements. Transformers and rectifiers share compact and efficient integrated designs that significantly reduce losses and improve overall system performance.
• High Reliability & Durability
Low leakage reactance, harmonic-suppression windings, and heavy-duty insulation systems. Every unit undergoes comprehensive accuracy and operational testing before shipment.
• Modular Delivery Solutions
Single-tank design suitable for ratings up to approximately 100 MVA; larger capacities can be split into two separate transportable units. Built-in or separate voltage regulation units are available for maximum flexibility and customization.
• Proven Track Record
Extensive experience with installations exceeding 100 MVA and a verified 50-year manufacturing history that guarantees product quality and long-term performance.
Specifications & Parameters
Typical technical parameters – fully customizable to meet specific project needs:
| Category | Specification / Description |
| Power Capacity | Up to 100 MVA per unit; parallel configurations for projects exceeding 100 MVA |
| Pulse Configuration |
6 / 12 / 24 / 48 / 60 pulses (higher pulse counts available upon request) |
| DC Output Voltage | 0 ~ 2000 V DC (typical for aluminum electrolysis) |
| DC Output Current | Highly customizable to meet project-specific high-current low-voltage (DSS) or high-power requirements (DB) |
| Phase Shift Angles | -12°, -6°, 0°, +6°, +12° (standard for 60-pulse aluminum potline systems) |
| Rectifier Technology | Double Star (DSS with interphase transformer) or Double Bridge (DB), compatible with diode or thyristor rectifiers |
| Cooling Methods | ONAN, ONAF, OFWF, and other oil-immersed or water-cooled systems available |
| Voltage Level | HV side designed to match customer grid; LV valve side optimized for rectifier connection, with optional integrated regulating unit |
| Applicable Standards | Designed in compliance with IEC 60076 and other international norms,CSA,UL,CE,etc. Low-loss design with high overload capability. Widely used in aluminum smelting, metal refining, electroplating, and other industrial DC power applications |
| All parameters can be deeply customized according to specific operating conditions. Contact our engineers for a tailored solution. | |
Packaging, Warranty & Certifications Packaging：
Newtranstech transformer rectifiers are delivered in robust export-grade wooden crates or container packaging to ensure safe sea and land transportation.
Warranty：
Standard warranty is 18 months from delivery (extendable per contract), with lifetime technical support and maintenance services available.
Certifications & Testing：
All products are manufactured under ISO 9001 quality management system and fully comply with IEC 60076, IEC 60076-5, and other relevant international standards. Every rectifier transformer undergoes complete type and routine tests before leaving the factory, ensuring zero-defect, high-precision delivery to customers.
