Industrial & Power Transformers for EMI and Power Applications
Our transformer solutions are engineered to deliver high reliability, low loss, and consistent performance across industrial, medical, telecom, and energy systems.
Stable Power Supply and Excellent Conversion
Efficient and Reliable Transformer Solutions!
As a leading transformer manufacturer, DOREXS is committed to providing a variety of high-performance standard and customized transformers to meet the power needs of various industries.
DOREXS has a professional R&D design team and advanced production technology to ensure that our transformers are at the forefront of the industry. At the same time, they are strictly produced in accordance with international standards to ensure that the performance and stability of each transformer are maximized.
Our products cover dry type transformers, single phase transformers, three phase transformers, high frequency transformers, toroidal transformers, R core transformers, EI core transformers, isolation transformers and special transformers.
If you need to know more about our products and services, please feel free to contact us.
DOREXS has a professional R&D design team and advanced production technology to ensure that our transformers are at the forefront of the industry. At the same time, they are strictly produced in accordance with international standards to ensure that the performance and stability of each transformer are maximized.
Our products cover dry type transformers, single phase transformers, three phase transformers, high frequency transformers, toroidal transformers, R core transformers, EI core transformers, isolation transformers and special transformers.
If you need to know more about our products and services, please feel free to contact us.
Single Phase Transformer
Suitable for changing the voltage level in single-phase AC circuits. Widely used in residential, commercial and light industrial applications, providing stable voltage conversion to ensure the normal operation of various equipment and systems. Looking for a specific product? We also provide design solutions tailored to your requirements.
Three Phase Transformer
Suitable for changing voltage levels in three-phase AC circuits, they are widely used in industry, power transmission and distribution systems. Compared with single-phase transformers, three-phase transformers can handle larger power demands more efficiently and are a core component of modern power systems. Our customization options ensure that your unique needs are precisely met.
Dry Type Transformer
Dry-type transformers use air as a cooling medium. They do not use liquid insulating media, so they are safer and more environmentally friendly. They are widely used in high-security and low-maintenance situations such as commercial buildings, underground facilities, hospitals, schools, and industrial sites.Looking for a specific product? We also offer design solutions tailored to your requirements.
High Frequency Transformer
Transformers specially designed for use in high frequency circuits, typically for applications with a frequency range of 20kHz to hundreds of MHz. Widely used in switching power supplies, communication equipment, wireless chargers, inverters, and various high frequency electronic circuits. Looking for a specific product? We also offer design solutions tailored to your requirements.
Toroidal Transformer
A toroidal transformer is a transformer with a toroidal or round core, with primary and secondary windings wound evenly around the toroidal core. Toroidal transformers have significant advantages in terms of size, efficiency, and electromagnetic interference, and are widely used in audio equipment, power supply equipment, medical equipment, industrial control equipment, and other fields. Looking for a specific product? We also provide design solutions tailored to your requirements.
R Core Transformer
An R-core transformer is a specially designed transformer whose core consists of an R-shaped (also called "cutaway") iron core. It is used where low magnetic losses and compactness are required. Looking for a specific product? We also offer design solutions tailored to your requirements.
The EI core transformer is a widely used transformer type, with a core made of "E"-shaped and "I"-shaped silicon steel sheets stacked together. This design provides a sturdy structure and good magnetic properties, and is widely used in power supply equipment, audio equipment, industrial control equipment, etc. Looking for a specific product? We also provide design solutions tailored to your requirements.
An isolation transformer isolates the electrical connection between two circuits while still allowing electrical energy to be transferred. Its main function is to improve safety, prevent electric shock, and reduce electrical noise interference to sensitive equipment. Isolation transformers are widely used in medical equipment, laboratory instruments, industrial control systems, and communication equipment. Looking for a specific product? We also provide design solutions tailored to your requirements.
Special Applications Transformer
Special application transformers are transformers developed according to specific industries and specific needs. We tailor-make design solutions according to your requirements.
Control Transformer
Control transformers are transformers designed to control circuits and power low-voltage devices. They are widely used in industrial automation, mechanical equipment, power systems, and building facilities. Looking for a specific product? We also provide design solutions tailored to your requirements.
Our transformers are known for their excellent performance and reliability. The efficient electrical design ensures stable power output and minimal energy loss. At the same time, we use advanced materials and manufacturing processes to ensure that the transformers can operate stably and long-term in various environmental conditions.
As your trusted partner, we are committed to providing you with the best transformer solutions to meet your power conversion and distribution needs. Regardless of the size of your project, we can provide tailor-made solutions to ensure that your business runs efficiently and stably.
As your trusted partner, we are committed to providing you with the best transformer solutions to meet your power conversion and distribution needs. Regardless of the size of your project, we can provide tailor-made solutions to ensure that your business runs efficiently and stably.
What is a transformer?
A transformer is an electrical device that uses the principle of electromagnetic induction to achieve AC voltage conversion through an iron core and a coil. It can increase or decrease voltage and isolate circuits. It is widely used in power transmission and power supply for electronic equipment.
Main functions of transformers
✅ Voltage conversion: increase or decrease voltage to adapt it to the needs of different devices.
✅ Power isolation: provide electrical isolation to improve system safety.
✅ Energy transmission: efficiently transmit electrical energy and reduce losses.
✅ Current adjustment: match the current requirements of different devices.
✅ Impedance conversion: adjust the input impedance or output impedance of the circuit.
✅ Power transmission: efficient power transmission and reduce line losses.
✅ Protect circuits and equipment: isolate the fault part and limit the size of the short-circuit current.
✅ Power isolation: provide electrical isolation to improve system safety.
✅ Energy transmission: efficiently transmit electrical energy and reduce losses.
✅ Current adjustment: match the current requirements of different devices.
✅ Impedance conversion: adjust the input impedance or output impedance of the circuit.
✅ Power transmission: efficient power transmission and reduce line losses.
✅ Protect circuits and equipment: isolate the fault part and limit the size of the short-circuit current.
Classification of transformers
Classification by phase number
- Single-phase transformer: suitable for low-power applications such as household appliances and small equipment.
- Three-phase transformer: widely used in industrial production, power systems, data centers, etc.
Classification by purpose
- Power transformer: used for power grid transmission and distribution to improve power transmission efficiency.
- Instrument transformer: such as current transformer and voltage transformer, mainly used for measurement and protection.
- Special transformer: such as rectifier transformer and welding transformer, suitable for specific industries.
Classification by cooling method
- Dry-type transformer: air cooling is adopted, suitable for indoor or fire-proof places.
- Oil-immersed transformer: oil cooling is adopted, with good heat dissipation performance, suitable for high-power applications.
Classification by winding connection method
- Autotransformer: input and output windings are partially shared, suitable for voltage regulation.
- Isolation transformer: input and output windings are completely independent, improving electrical isolation capability.
Application fields of transformers
✅ Industrial field: machine tools, automation equipment, motor control.
✅ Power system: substation, power transmission and distribution of power grid.
✅ Medical equipment: high-precision equipment such as MRI and X-ray equipment.
✅ Communications industry: uninterrupted power supply for data centers and communication rooms.
✅ New energy: voltage matching of wind power and photovoltaic power generation systems.
✅ Construction field: power distribution facilities for residential buildings, office buildings and public buildings.
✅ Power system: substation, power transmission and distribution of power grid.
✅ Medical equipment: high-precision equipment such as MRI and X-ray equipment.
✅ Communications industry: uninterrupted power supply for data centers and communication rooms.
✅ New energy: voltage matching of wind power and photovoltaic power generation systems.
✅ Construction field: power distribution facilities for residential buildings, office buildings and public buildings.
Transformer installation, maintenance and troubleshooting
Installation precautions
- Ensure that the installation environment is dry and well ventilated.
- Wire correctly to avoid short circuit or overload.
- Use a suitable cooling system (air cooling or oil cooling).
Daily maintenance
- Check the temperature and insulation status regularly.
- Monitor the load to avoid overload operation.
- Clean the surface of the transformer to prevent dust from affecting heat dissipation.
Common faults and solutions
❌ Transformer overheating: It may be overloaded or poorly ventilated. The load should be checked and heat dissipation should be improved.
❌ Abnormal noise: It may be loose windings or core vibration. The fasteners should be checked.
❌ Short circuit or open circuit: Check whether the input and output lines are damaged.
❌ Abnormal noise: It may be loose windings or core vibration. The fasteners should be checked.
❌ Short circuit or open circuit: Check whether the input and output lines are damaged.
Transformer Selection Guide
How to choose the right transformer?
✅ Determine the voltage requirement (input/output voltage level).
✅ Calculate the load power (choose a transformer with sufficient capacity).
✅ Consider efficiency and energy consumption (energy-saving transformers reduce operating costs).
✅ Check safety certifications (such as UL, CE, ISO9001).
✅ Choose the right cooling method (dry or oil-immersed).
✅ Calculate the load power (choose a transformer with sufficient capacity).
✅ Consider efficiency and energy consumption (energy-saving transformers reduce operating costs).
✅ Check safety certifications (such as UL, CE, ISO9001).
✅ Choose the right cooling method (dry or oil-immersed).
Frequently Asked Questions (FAQ)
Q1: Can transformers improve power supply stability?
A: Yes, transformers can stabilize voltage and reduce the impact of grid fluctuations on equipment.
Q2: Which is more suitable, dry-type transformers or oil-immersed transformers?
Q2: Which is more suitable, dry-type transformers or oil-immersed transformers?
A: Dry-type transformers are suitable for indoor places with high fire protection requirements; oil-immersed transformers are suitable for high-power industrial applications.
Q3: What is the general efficiency of transformers?
Q3: What is the general efficiency of transformers?
A: Transformer efficiency is usually between 95%-99%, and high-efficiency transformers can reduce energy loss.
Q4: Can transformers with special specifications be customized?
Q4: Can transformers with special specifications be customized?
A: Yes, we support customization of input/output voltage, power, and winding method.
Q5. What products can I buy from you?
A:EMI/EMC filters, transformers, reactors, insulated wires and power sockets, etc.
A:EMI/EMC filters, transformers, reactors, insulated wires and power sockets, etc.
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Provide efficient and reliable transformer solutions to meet your power needs!
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