DOREXS Three-Phase EMI Filters | EMI Solutions for Industrial and High Power Equipment
author: DOREXS
2023-11-16
DOREXS three phase EMI filters eliminate high-frequency noise and harmonics from the power supply to ensure stable and reliable operation of the power system and help maintain compliance with emission standards. The series offers current ranges from 6 to 2000A with standard nominal voltages up to 380/440 Vac. We offer single-stage, dual-stage and multi-stage designs, with higher current and voltage ratings available upon request. A variety of installation methods such as terminal blocks, cables, screws and guide rails are also provided.
DOREXS three-phase power filters are designed for high-current, high-performance electrical equipment. They can effectively suppress common-mode and differential-mode interference and are widely used in industrial automation, power systems, inverters, frequency converters and rail transportation, helping the system to operate stably and improve electromagnetic compatibility.
3 Phase 3 Wire EMI filter
 DAC1
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 DAC3-D
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 DAC4
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 DAC4-D
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 DAC6
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 DAC6-D
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 DF2
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3 Phase 4 Wire EMI filter
 DAC41
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 DAC41-D
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 DAC42
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 DAC44
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Product Advantages
✅ High-performance EMI suppression capability, suitable for three-phase power supply system
✅ Wide rated current range: 10A~2000A optional
✅ Support differential mode and common mode filtering, suitable for complex electromagnetic environment
✅ Support bolt, terminal block and DIN rail installation
✅ UL / CE / RoHS certification
✅ Support industrial grade, explosion-proof type, military grade customization
✅ Wide rated current range: 10A~2000A optional
✅ Support differential mode and common mode filtering, suitable for complex electromagnetic environment
✅ Support bolt, terminal block and DIN rail installation
✅ UL / CE / RoHS certification
✅ Support industrial grade, explosion-proof type, military grade customization
Single-phase vs. three-phase EMI filter comparison
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Comparison item
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Three-phase EMI filter
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Applicable power supply type
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Single-phase 110V/220V
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Three-phase 220V/380V/440V
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Rated current range
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1A ~ 200A
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10A ~ 2000A
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Typical applications
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Small power supply equipment, home appliances, medical equipment
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Industrial equipment, inverters, elevators, data centers
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Mounting method
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Panel screws/inserts
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Flange fixing/DIN rail
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Customization support
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Limited (medical grade, low leakage, etc.)
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High (high current, explosion-proof, military grade, etc.)
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If you need three-phase EMI filter technical solutions, sample applications or EMC compliance guidance, please contact the DOREXS engineering team. We provide selection support and professional services within 24 hours.
About Three-Phase EMI Filters
Three-phase power filters are essential components in electrical systems designed to reduce electromagnetic interference (EMI) and ensure smooth equipment operation. Capacitors, when used in conjunction with inductors, play a vital role in improving EMI filtering in three-phase line EMI filters. These filters are particularly important in three-phase power systems, where they help maintain power quality and protect sensitive equipment from EMI.
Three-Phase Power Systems
Three-phase power systems are widely used in industrial and commercial applications, providing a reliable and efficient way to distribute power. These systems consist of three phases of alternating current with different phases, resulting in a more stable and consistent power supply. Three-phase power systems are often used in high-performance applications such as industrial machinery, power line equipment, and high-attenuation installations. In these systems, the use of three-phase filters is essential to minimize electrical noise and ensure smooth equipment operation.
DOREXS Three-Phase EMI Filters
DOREXS offers a range of three-phase EMI filters designed to provide excellent attenuation and low leakage current. These filters are suitable for a variety of applications, including industrial machinery, power supplies, and equipment installations. DOREXS three-phase filters are designed to meet the specific needs of each industry, ensuring compliance with regulatory standards and minimizing electrical noise. DOREXS filters are available in a variety of configurations and connection options for easy integration into existing systems, providing effective noise suppression and reliable operation.
Three-Phase EMI Filter Applications
Three-phase filters are used in a wide range of applications, including power line equipment, industrial machinery, and high-attenuation installations. In these applications, the use of filters is essential to minimize electrical noise and ensure smooth operation of equipment. Filters are also used in a variety of industries such as medical, military, and aerospace where high performance and reliability are important. By reducing electromagnetic interference, filters play a vital role in ensuring safe and efficient operation of equipment and are an integral component in many electrical systems.
Three-Phase Power Filter Design and Features
Three-phase power filters are designed to provide effective noise suppression and excellent attenuation performance, and are available in a range of features and configurations to meet specific industry needs. These features and configurations include delta, wye, and series configurations, as well as various connection options such as terminal blocks and busbars. EMI filters also feature low leakage current and high attenuation, making them ideal for high-performance applications. With a wide range of products and services, filters can be easily integrated into existing systems, provide reliable operation and minimize electrical noise. Please note that stock levels and availability may vary, so always check with suppliers for the latest information and find the product that best meets your needs.
Advantages of three phase filters
Three-phase filters play a key role in a variety of industrial and technical applications. Here are some of its main advantages:
1. Improve system performance: Three phase filters can effectively eliminate high-frequency noise in power lines, which can significantly improve system performance and stability.
2. Reduce interference: Three phase filters can significantly reduce electromagnetic interference in the power supply, which is very important for many electronic devices and systems (e.g., medical equipment, communication equipment, etc.).
3. Extend the life of the equipment: By using a three phase filter, power supply noise and electromagnetic interference can be reduced in the power line, which helps to extend the life of the equipment.
4. Improve the quality of power supply: The three phase filter improves the quality of the power supply. After filtering out harmonics and electromagnetic interference, the output voltage waveform is closer to the ideal sine wave.
5. Simplify system design: Using three phase filters, designers can simplify the overall design of power supplies and electronic equipment, making the design more concise and efficient.
6. Cost savings: Three phase filters allow you to save overall system design and operating costs. It reduces the need for additional power redundancy, thereby saving capital expenditure. In addition, by minimizing noise in the power supply, the frequency and cost of maintenance and replacement of equipment is reduced, and operating costs are saved.
7. Suitable for various environments: Since the design of the three phase filter makes it stable and durable, it can work in a variety of different environments, including industrial environments with high humidity and high temperature. It has strong adaptability and high anti-interference ability, providing transcendent power quality for the device.
1. Improve system performance: Three phase filters can effectively eliminate high-frequency noise in power lines, which can significantly improve system performance and stability.
2. Reduce interference: Three phase filters can significantly reduce electromagnetic interference in the power supply, which is very important for many electronic devices and systems (e.g., medical equipment, communication equipment, etc.).
3. Extend the life of the equipment: By using a three phase filter, power supply noise and electromagnetic interference can be reduced in the power line, which helps to extend the life of the equipment.
4. Improve the quality of power supply: The three phase filter improves the quality of the power supply. After filtering out harmonics and electromagnetic interference, the output voltage waveform is closer to the ideal sine wave.
5. Simplify system design: Using three phase filters, designers can simplify the overall design of power supplies and electronic equipment, making the design more concise and efficient.
6. Cost savings: Three phase filters allow you to save overall system design and operating costs. It reduces the need for additional power redundancy, thereby saving capital expenditure. In addition, by minimizing noise in the power supply, the frequency and cost of maintenance and replacement of equipment is reduced, and operating costs are saved.
7. Suitable for various environments: Since the design of the three phase filter makes it stable and durable, it can work in a variety of different environments, including industrial environments with high humidity and high temperature. It has strong adaptability and high anti-interference ability, providing transcendent power quality for the device.
Application scope of three phase filter
As a key electronic component, three phase filters are widely used in many different fields and industries. The following are the main application areas of three-phase filters:
1. Industrial automation: In the industrial production process, many equipment and machines require stable and reliable power supply. Three-phase filters can remove electromagnetic interference and harmonics in the power supply, ensure stable power quality, and prevent interference from affecting industrial automation systems.
2. Power system: In the process of power transmission and distribution, three phase filters can reduce the generation of harmonics, improve the purity of the power system and reduce the electromagnetic interference of the power grid, ensuring the operational safety and stability of the power system.
3. Communication system: Wireless communication base stations, communication equipment with high-frequency electronic devices, etc. require stable power supply. Three phase filters can reduce interference noise in the power supply and provide clean power to the communication system to ensure the quality and reliability of communication signals.
4. Medical equipment: Various medical equipment in hospitals and medical institutions have high requirements on power supply quality. Three-phase filters can remove electromagnetic interference and harmonics from the power supply, ensure the normal operation of medical equipment, and avoid harm to patients or affecting the accuracy of diagnostic results due to power interference.
5. Railway and transportation systems: Railway and transportation signaling equipment have strict requirements on power supply stability. Three-phase filters can suppress noise and interference in the power supply, ensure the reliability and accuracy of signaling equipment, and ensure the safe operation of railway and transportation systems.
6. Electric vehicle charging piles: With the popularity of electric vehicles, the power supply quality of charging piles has become particularly important. Three phase filters can effectively filter harmonics and interference in the power grid, ensuring that electric vehicle charging piles can provide stable and clean power while protecting vehicle electronic systems.
7. Solar and wind power generation systems: In the field of renewable energy, solar and wind power generation systems usually require stable power quality to ensure power generation efficiency and equipment lifespan. Three-phase filters filter out harmonics in solar and wind energy systems and reduce grid disturbances.
1. Industrial automation: In the industrial production process, many equipment and machines require stable and reliable power supply. Three-phase filters can remove electromagnetic interference and harmonics in the power supply, ensure stable power quality, and prevent interference from affecting industrial automation systems.
2. Power system: In the process of power transmission and distribution, three phase filters can reduce the generation of harmonics, improve the purity of the power system and reduce the electromagnetic interference of the power grid, ensuring the operational safety and stability of the power system.
3. Communication system: Wireless communication base stations, communication equipment with high-frequency electronic devices, etc. require stable power supply. Three phase filters can reduce interference noise in the power supply and provide clean power to the communication system to ensure the quality and reliability of communication signals.
4. Medical equipment: Various medical equipment in hospitals and medical institutions have high requirements on power supply quality. Three-phase filters can remove electromagnetic interference and harmonics from the power supply, ensure the normal operation of medical equipment, and avoid harm to patients or affecting the accuracy of diagnostic results due to power interference.
5. Railway and transportation systems: Railway and transportation signaling equipment have strict requirements on power supply stability. Three-phase filters can suppress noise and interference in the power supply, ensure the reliability and accuracy of signaling equipment, and ensure the safe operation of railway and transportation systems.
6. Electric vehicle charging piles: With the popularity of electric vehicles, the power supply quality of charging piles has become particularly important. Three phase filters can effectively filter harmonics and interference in the power grid, ensuring that electric vehicle charging piles can provide stable and clean power while protecting vehicle electronic systems.
7. Solar and wind power generation systems: In the field of renewable energy, solar and wind power generation systems usually require stable power quality to ensure power generation efficiency and equipment lifespan. Three-phase filters filter out harmonics in solar and wind energy systems and reduce grid disturbances.
FAQ
1. What equipment is the three-phase EMI filter suitable for?
Suitable for high-power equipment that requires three-phase power supply, such as inverters, industrial motors, UPS, etc.
2. What installation methods do three-phase filters support?
Three options are available: screw mounting, flange mounting, and DIN rail mounting, which are convenient for integration into various cabinets.
3. Do you provide EMC testing and selection recommendations?
Yes, we can provide complete filter selection recommendations and EMC compliance support based on your application scenario.
4. Can it be customized with a shielded cover or explosion-proof function?
Special requirements such as shielded shells, glue filling, and explosion-proof shells can be customized, and OEM services are supported.
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