- Offer Profile
- A pioneer for controllable electronic frequency converters, REFU Elektronik GmbH was founded in 1965. Since then, the company has been producing drive solutions of the highest quality. From the chemical industry to use in traction vehicles, REFU frequency converters have been tried and tested for over 40 years. Over the last few years, further developments to drive technology like energy storage systems and electromobility solutions have been added to our traditional fields involving controllable power electronics and control cabinet construction.
Product Portfolio
Converters
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Frequency converter
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- REFUdrive frequency converters are ideal for use in the harshest conditions. You can efficiently design your drive solution thanks to high frequency converter efficiency factors.
This applies to single-axis applications and group drives alike.
Technical features:
- Mains voltage from 3 AC 400 V to 3 AC 500 V (+10%/-15%) at 50/60 Hz
- Power range from 3 to 250kW
- Output frequencies of up to 1000 Hz
- Temperature range from -20 to +55°C
- Shock loads of up to 20G
- Vibration resistance up to 2G
- Installation height of up to 2,000 m
- CANopen interface, Profibus DP interface
- Operating software
- Safety technology
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Inverter
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- REFUdrive inverters may also be used in tough environments. By coupling inverters in a DC intermediate circuit, it is possible to exchange energy between motors operated by another motor or generator. This lets you efficiently use the provided electrical energy.
Technical features:
- Power range from 3 to 250kW
- Output frequencies of up to 1000 Hz
- Temperature range from -20 to +55°C
- Installation height of up to 2,000 m
- Shock loads of up to 20G
- Vibration resistance up to 2G
- Optimum control of connected 3-phase motors with or without an encoder
- CANopen interface, Profibus DP interface
- Operating software
- Safety technology
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Supply module
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- REFUdrive supply units can be used in numerous areas. Thanks to the sinusoidal consumption and feedback of current, these devices work with a power factor of almost 1. This reduces the overall reactive power in your system and number of connection cables.
Technical features:
- Mains voltage from 3 AC 400 V to 3 AC 500 V (+10%/-15%) to 50/60 Hz
- Power range from 45 to 300 kW
- Regulated intermediate circuit
- Feedback: sinusoidal feedback
- Temperature range from -20 to +55°C
- Installation height of up to 2,000 m
- Shock loads of up to 20G
- Vibration resistance up to 2G
- Possible parallel connection to increase the power range
- Load splitting possible.
- CANopen interface, Profibus DP interface
- Operating software
- Safety technology
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DC-DC converter
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- REFUdrive DC-DC converters make your system efficient. They allow you to transfer energy from one DC potential to another. This lets you implement your energy storage task cost-efficiently.
Technical features:
- Temperature range from -20 to +55°C
- Installation height of up to 2,000 m
- Shock loads of up to 20G
- Vibration resistance up to 2G
- Power range from 12 to 300 kW
- Available for 2- (2Q) or 4-quadrant (4Q) operation
- CANopen interface, Profibus DP interface
- Operating software
- Safety technology
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Accessories
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- We offer numerous accessories to integrate REFUdrive converters in your system:
- Mains filters
- Brake resistors
- Motor filters
- Sinusoidal filters
Other Products
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Control cabinet construction
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- Each of our products is the result of years of experience in development, planning, and production. In particular, control cabinet construction is our specialty. Each control cabinet is unique, either as an individual design or adapted to specifically fit your task at a location you specify. When it comes to small and medium-sized batches, you can rely on us as well: each control cabinet is a reliable product with sophisticated functions and the highest quality.
Flexible
- Individual development and planning for your application
- Production in individual, small, or medium-sized batches
- Commissioning and service
Economical
- Comprehensive competence and few interfaces
- High quality, sophisticated functionality, and reliability
- Use in various applications and operating conditions
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Energy storage systems
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- We provide you with...
- Energy storage with batteries, battery management systems, energy storage systems, and DC-DC converters as an individual or complete solution in combination with drive technology system solutions
- Energy-efficient battery management systems as a complete solution for use in electric mobility applications and other drive technology applications
- For stationary or mobile systems
You not only have the opportunity to store energy. You can also save energy and reduce your costs. In many cases, the system can also be downsized.
Energy-efficient:
- Energy savings
- Downsizing of the diesel generator
- Reduction in connection power
- Reduction in energy costs and operating costs
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Individual developments
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- You have a problem and are looking for a partner to help you solve it? Do you need expertise in power electronics, specifically with converter technology and control cabinet construction?
我们可以帮你与个人发展或small-series production. Irrespective of whether you need products for drive technology, electric mobility, or any other of the numerous possible application areas – get in touch with us. We offer:
Individual
- Consultation and development from the performance specifications to the requirements specifications
- Production of jointly developed products
- Worldwide training, commissioning, maintenance, and service
Efficient
- One contact person to assist you throughout the whole project
- Solutions specially adapted to your task
- Time savings thanks to solution coordination
Areas of application
- Energy-efficient solutions for the entire scope of drive technology
Our converters are characterized by high energy efficiency and reliability as well as a long service life and high efficiency factors, which makes them the ideal choice for all applications where time and energy must be saved.
This is why the REFUdrive family is especially suited for:
- Electric mobility for commercial and railbound vehicles, harbor, construction, mining and mobile machinery, as well as agricultural machinery
- Crane and conveyor technology
- Power engineering and energy storage solutions
- Test stand technology
- Chemical industry and vacuum technology
- Power plant technology
- As well as all applications found in classic drive technology.
Any type of synchronous and asynchronous motor, torque or permanent magnet motor can be operated and also implemented as a multiple-axis system for installation in a control cabinet.
REFUdrive converters can be used in all sorts of environments.
尤其是在需要牵引capabilit领域y, vibration resistance, and shock resistance.
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Drive technology
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- Classic drive technology has been our specialty for over 40 years. Thanks to the modular design of REFUdrive converters, we are able to adapt solutions to perfectly fit your requirements. Possible applications include:
- Conveyor drives such as roller, belt, and continuous conveyors, etc.
- Positioning drives such as pick-and-place machines and automatic assembly machines
- Synchronous drives (including strip processing lines for sheet metal, paper, film, textiles, filaments, wires, cables, etc.)
- Synchronized motion control (cutting, stamping, bonding, welding, forming, packaging, sorting)
- Forming (extruder for plastic, aluminum, pressing, thermoforming, shaking, spinning)
- Tool drives (for metal, wood, stone, glass, paper, plastic, etc.)
- Pumps
- Fans
- Compressors
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Electric mobility
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- Traction capability is our strength. Whether in cranes, heavy trucks, construction, mining, or agricultural machinery: our platform concept helps you implement your traction drives. We offer:
System solutions for mobile machinery
- Generator inverters
- Motor inverters
- Vehicle power supplies
- DC-DC converters for charging of double-layer capacitors or batteries
- In a standard version or special IP67 version
- Housing individually adapted
Energy-efficient
- 高效因素组件
- Reduction in CO2 emissions
- Downsizing of diesel generators or connecting cables
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Conveyor technology
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- Lifting, driving, turning – one of our most exciting application areas: cranes used in a wide range of different applications. Whether in harbors or upcountry, with or without a driver.
An article in the trade journal “Antriebstechnik” recently described a mobile harbor crane using a REFU Elektronik solution. The full article can be found here.
From harbor cranes and container vehicles to shearer loaders used in mining – REFUdrive converters let you operate your machines and vehicles reliably and safely under the toughest conditions.
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Test stand technology
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- Test stands with exceptionally accurate torques and speeds have been produced by REFU since the early days of the company. Our entire production and development expertise is concentrated in this field, which allows us to provide you with optimum electric equipment for your test stands.
Our range of products covers classic automotive technology such as
- Exhaust gas test stands
- Roller test stands
- Driving simulators
Of course, we can also supply the right equipment for electric mobility test stands, such as
Of course, all other applications requiring accurate torques and speeds are also possible.
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Vacuum Technology
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- What do lenses, photovoltaics, and microprocessors have in common? Almost all semi-conductors are manufactured in a vacuum.
We provide you with the converter technology needed for the electronic equipment of vacuum pumps.
One of our individual development projects is the development and production of drives and control units in a power range of 100 VA to 2000 VA. We have been providing this customer with vacuum technology solutions for many years.
However, you can equip your vacuum equipment with a standard REFUdrive converter. For example, if you use permanently activated synchronous motors, you can design systems that efficiently operate the motors without increasing losses in the rotor disk at speeds > 50.000 rpm.
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Energy technology
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- Power engineering and energy storage solutions combined with drive technology system solutions
Everyone is talking about saving energy. Do it with:
- Batteries, battery management systems, energy storage devices, and DC-DC converters
- In stationary or mobile applications
Energy-efficient:
- Energy savings
- Downsizing of diesel generator
- Reduction in connection power
- Reduction in energy costs and operating costs
Using complete solutions from REFU Elektronik results in interesting potentials for energy savings, regardless if used in classic power engineering, such as in generators, or in electric mobility. Energy savings can also be achieved in stationary systems using the REFUdrive system
