The THREE PHASE TRANSFORMER, Core is made of non-oriented silicon steel with high magnetic flux and low loss. During processing, the influence on the non-oriented magnetic properties is small and the magnetic circuit reluctance is large. In this case, the transformer has good heat dissipation, low temperature rise, small starting current and high safety performance. THREE PHASE TRANSFORMER is widely used in Three-phase power control equipment. Eg: Industrial equipment, Security system, Machine tool equipment, Elevator control power system.  

Product Features

  • Efficient Power Distribution:

Our three-phase transformers are designed to efficiently distribute electrical power across three-phase systems, ensuring balanced load distribution and reliable operation.

  • Versatile Configurations:

Available in various configurations including delta (Δ), wye (Y), and zigzag, our transformers can be tailored to meet specific voltage, current, and phase requirements for diverse applications.

  • High Power Handling Capacity:

With robust construction and advanced insulation materials, our transformers are capable of handling high power levels, making them suitable for industrial, commercial, and utility-grade applications.

  • Compact Design:

Engineered for space-saving installations, our transformers feature a compact design without compromising on performance, making them suitable for installations with limited space availability.

  • Customization Options:

We offer customizable solutions to accommodate unique application requirements, including special winding configurations, voltage taps, and enclosure designs, ensuring compatibility with a wide range of electrical systems.


  • Industrial Power Distribution:

Our three-phase transformers are widely used in industrial facilities for distributing power to motors, machinery, and equipment, ensuring reliable and efficient operation.

  • Commercial Buildings:

From office complexes to shopping malls, our transformers provide stable and consistent power supply for lighting, HVAC systems, elevators, and other building services.

  • Utility Grids:

Integrated into utility-grade power distribution systems, our transformers play a critical role in stepping up or stepping down voltages for transmission and distribution, ensuring efficient power delivery to end-users.

  • Renewable Energy:

In renewable energy systems such as wind farms and solar power plants, our transformers facilitate the conversion and distribution of electricity generated from renewable sources, supporting the transition to clean energy.

  • Data Centers:

Critical for uninterrupted operation, our transformers supply reliable power to data center infrastructure, including servers, networking equipment, and cooling systems, ensuring continuous operation and data integrity.

Company Advantages

  • Industry Expertise:

With decades of experience in transformer manufacturing, we possess in-depth knowledge and expertise to deliver high-quality, reliable transformers tailored to meet the specific needs of our customers.

  • Quality Assurance:

Committed to quality excellence, our transformers undergo rigorous testing and inspection processes to ensure compliance with industry standards and customer specifications.

  • Responsive Customer Support:

We provide responsive customer support, assisting customers with product selection, customization, technical queries, and after-sales service to ensure a seamless experience.

  • Innovation and Technology:

Leveraging the latest advancements in transformer design and technology, we continuously innovate to deliver transformers that meet the evolving demands of modern electrical systems.

  • Environmental Responsibility:

We are committed to sustainability and environmental stewardship, incorporating eco-friendly practices into our manufacturing processes and product designs to minimize environmental impact.


1. What is three-phase transformer explain its operation?

A three-phase transformer is a type of transformer designed to handle three-phase electrical power systems. In a three-phase system, three separate alternating currents (AC) of the same frequency are used, with each current phase offset by 120 degrees from the others. Three-phase transformers are commonly used in industrial and commercial applications to step up or step down voltages in three-phase power distribution systems. Here's an explanation of how a three-phase transformer operates:

  • Core and Windings:

Like single-phase transformers, three-phase transformers consist of a core made of ferromagnetic material (such as iron or silicon steel) and multiple windings of insulated wire. The windings are wound around different legs of the core and are electrically isolated from each other.

  • Connections:

In a three-phase transformer, the windings can be connected in various configurations, such as delta (Δ), wye (Y), or zigzag. The choice of connection depends on the specific application and the desired output voltage.

  • Phase Relationships:

In a three-phase system, the voltages and currents in each phase are offset by 120 degrees from each other. This phase relationship is essential for balanced power distribution and efficient operation of three-phase equipment.

Voltage Transformation:
The primary winding of the transformer is connected to the incoming three-phase power source, while the secondary winding is connected to the load or the outgoing three-phase power distribution system. The transformer steps up or steps down the voltage levels as required by the application.

  • Balanced Load:

In a balanced three-phase system, the load is evenly distributed across all three phases, with each phase carrying the same amount of current. This balanced load ensures that the transformer operates efficiently and delivers stable output voltages.

  • Efficiency and Regulation:

Like single-phase transformers, three-phase transformers are designed to operate with high efficiency and minimal voltage regulation. The core and winding design, along with proper insulation and cooling, contribute to efficient power transfer and reliable operation.

  • Protection and Control:

Three-phase transformers are equipped with various protection and control features, such as overcurrent protection, overvoltage protection, and temperature monitoring. These measures help ensure safe and reliable operation under different operating conditions.

Overall, a three-phase transformer plays a crucial role in three-phase power distribution systems by efficiently transforming voltages to meet the requirements of industrial, commercial, and residential applications. Understanding the operation and characteristics of three-phase transformers is essential for designing and maintaining efficient and reliable electrical power systems.

2. Is a 3 phase transformer AC or DC?

A three-phase transformer is designed to operate with alternating current (AC), not direct current (DC). In electrical engineering, alternating current refers to a type of electric current that periodically reverses direction, while direct current flows consistently in one direction.

In a three-phase system, three separate AC currents of the same frequency are used, with each current phase offset by 120 degrees from the others. Three-phase transformers are specifically designed to handle this type of AC power, which is commonly used in industrial, commercial, and residential electrical systems for its efficiency and ability to power large motors and equipment.

So, to clarify, a three-phase transformer operates with AC, not DC.

3. Why do we need three-phase transformer?

Three-phase transformers are essential components in electrical power systems for several reasons:

  • Efficiency:

Three-phase power distribution is more efficient than single-phase distribution for transmitting large amounts of power over long distances. Three-phase transformers help improve overall system efficiency by minimizing energy losses during power transmission.

  • Balanced Loads:

In three-phase systems, the load is distributed evenly across all three phases, resulting in balanced currents. This balance reduces voltage drops, improves power quality, and allows for more efficient use of conductors and equipment.

  • Power Transmission:

Three-phase transformers are used in high-voltage transmission networks to step up voltages for long-distance transmission and step down voltages for distribution to end-users. The use of three-phase power reduces the amount of current required for transmitting a given amount of power, resulting in smaller conductor sizes and lower losses.

  • Industrial Applications:

Many industrial machines and equipment, such as motors, compressors, and pumps, require three-phase power for efficient operation. Three-phase transformers provide the necessary voltage levels to power these industrial loads.

  • Commercial and Residential Applications:

While single-phase power is commonly used in residential buildings, three-phase power may be required for larger residential complexes, commercial buildings, and industrial facilities. Three-phase transformers help distribute power effectively to meet the needs of these applications.

  • Redundancy and Reliability:

In critical applications where uninterrupted power supply is essential, multiple transformers may be used in parallel or in redundant configurations. Three-phase transformers provide redundancy and improve system reliability by ensuring continuous power supply even if one transformer fails.

  • Voltage Regulation:

Three-phase transformers can be configured to step up or step down voltages as needed to maintain stable voltage levels within the power system. This helps ensure reliable operation of electrical equipment and protects against voltage fluctuations.

Overall, three-phase transformers play a crucial role in electrical power systems by enabling efficient power transmission, balancing loads, supporting industrial processes, and ensuring reliable power supply for commercial and residential users. Their use helps optimize the performance and reliability of electrical power systems across various applications.

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