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What is a Three-Phase Transformer?

A three-phase transformer is an electrical device used to transmit and regulate power between circuits in a three-phase system. It is widely used in factories, power plants, and large commercial facilities. Compared to single-phase transformers, three-phase transformers offer higher efficiency, smoother current flow, and lower energy losses, making them the preferred choice for high-power applications.

Major Types of Three-Phase Transformers

We offer a full range of three-phase transformers to meet various voltage and power requirements:

Dry-type three-phase transformers – Safe and flame-retardant, they are ideal for indoor environments with strict fire protection requirements.

Oil-immersed three-phase transformers – Provide excellent cooling and insulation for heavy-duty or outdoor installations.

Step-up three-phase transformers – Convert low voltage to high voltage for power transmission and long-distance energy distribution. Step-Down Three-Phase Transformers – Reduce high input voltages to safe levels for industrial equipment and machinery.
Control Transformers – Ensure stable control voltage for automation, CNC machine tools, and switchboards.

Key Features and Benefits

✅ High Efficiency: Up to 98% energy conversion efficiency with minimal losses.
✅ Durable Construction: Copper or aluminum windings with advanced insulation technology.
✅ Wide Voltage Range: From 380V to 11kV, or customizable upon request.
✅ Low Noise and Low Temperature Rise: Ensure long-term stable and quiet operation.
✅ Compliant with International Standards: IEC, CE, ISO9001, and RoHS certified.

Three-Phase Transformer Applications

Our three-phase transformers are widely used in:

Industrial manufacturing plants
Power distribution systems
Renewable energy (solar and wind)
Construction sites and mining operations
Automation and control systems
Commercial buildings and hospitals

Why choose us?

With over 20 years of experience in transformer manufacturing, we enjoy a strong reputation in both domestic and international markets. Our factory, equipped with advanced testing equipment and a professional engineering team, offers OEM and ODM customization services to meet specific project needs.

We serve customers worldwide in Asia, Europe, the Middle East, and South America, providing reliable power solutions that support industrial growth and energy efficiency.

Choosing the Right Three-Phase Transformer

When selecting a three-phase transformer, consider the following factors:

Input and output voltage levels
Power rating (kVA or MVA)
Installation environment (indoor/outdoor)
Frequency (50Hz or 60Hz)
Insulation and cooling type

Need help choosing the right model?

👉 Contact our engineers for a free consultation on our three-phase transformer range and receive a customized quote within 24 hours.

الأسئلة الشائعة

Q1: What is the difference between a step-up transformer and a step-down transformer?

A step-up transformer increases voltage from low to high for transmission, while a step-down transformer reduces voltage to ensure safe use in equipment.

Q2: Can you customize the voltage and power rating of your transformer? Yes, we offer comprehensive OEM and ODM customization services across voltage, capacity, frequency, and size.

Q3: What is the typical efficiency of a Zhengxi three-phase transformer?

Our transformers typically achieve efficiencies of 96-98%, depending on the model and load conditions.

Q4: Do you provide export packaging and certifications?

Yes, we use wooden export boxes, and each shipment includes CE, ISO, and test reports.

PINEELE—your trusted power conversion partner.

Providing efficient, stable, and secure power to your global energy systems.