Technical Resources
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Brochure
REOVIB Vibratory Conveyor Technology
Vibratory technology is a specialist field of industrial conveyor systems. It is used for ...
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REO Toroidal Transformers
REO has been developing and producing toroidal transformers for more than 25 years continu...
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Brochure
REO Current & Voltage Sensors
For many years, REO has been active in the development, manufacture and optimization of...
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Brochure
REOTRON Power Supplies For Use In Cathodic Protection Applications
For many years REO has manufactured and developed power supplies for use in Cathodic Prote...
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REOWAVE®passive
The new generation of harmonic filters Electrical components are continually becoming s...
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Brochure
Classics
REO's classic range of products include:- Variable Transformers, toroidal and column ty...
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Brochure
REO EMC Filters
The use of electrical and electrical equipment is becoming more widespread. However to ens...
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Brochure
REO EMC Filter - The Product range at a glance
Here you can find our CNW range of EMC Filter products at a glance. To ensure that you ...
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Brochure
REO Air Chokes
The air choke is designed for use in vehicles in direct current (DC) voltage systems. This...
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Brochure
The use of 5-core chokes
A comparison with alternative solutions In order to be able to transfer large loads usi...
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Brochure
REO current sensor type WKO-2C
REO has developed a new generation of closed loop (C/L) current transducers which guarante...
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REO Current Sensor WKO-2C-B
The current transducer WKO-2C-B with hall effect elements and double-core technology has a...
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Brochure
Powerline Communication (PLC) Filters
Powerline filters suitable for solving power quality issues in the following applications ...
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Brochure
REODATA - fieldbus communications solutions
Trends like Industry 4.0 and enhanced levels of factory automation and process information...
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Brochure
REOWAVE® passive plus
- The new generation of harmonic filters - Electrical components are continually becom...
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Brochure
REO components for wind power generation
Safe application for onshore and offshore installations REO components are essential co...
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Brochure
REO Choke - Product catalogue
• Extensive REO choke product range • Manufacturing according to DIN EN 60931...
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Brochure
REOMED Isonet network isolator
The REOMED Isonet network isolator is used for electrical isolation of devices in copper w...
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Brochure
Extra Equipment for REOMED
Equipment for the REOMED and REOMED II medical isolating transformers.
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Brochure
Components for medical engineering
Most modern medical examination and surgical procedures would not be possible without elec...
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Brochure
AC Electromagnets
Quality and Experience in every phase. REO AC electro-magnets are used in automation ap...
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Article
Achieving electrostatic discharge (ESD) immunity by design
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Brochure
Amorphous Cored Chokes
As a passive inductive component in power supplies and in power electronics, the buck-c...
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Article
An overview of variable transformers
In a similar way to resistors, variable transformers are available in two forms, toro...
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Guide
EMC Filters Guide
A guide to Electromagnetic Compatibility. This is one of a series of informative bookle...
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Brochure
Braking and Load Resistors
Reliable partner for drive engineering For many years, REO has been continuosly develop...
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Article
BANANA SKIN REPORT OF ELECTRICAL/ ELECTROMAGNETIC INTERFERENCE
Some thoughts on EMC and safety, and the security of bank accounts Personally, I co...
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Guide
EN 55022 & EN 55011 Measuring radiated emissions
The seventh mini guide in our series of seventeen relating to EN standards called up by...
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Brochure
Chokes Overview
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Article
BANANA SKIN REPORT OF ELECTRICAL/ ELECTROMAGNETIC INTERFERENCE
Examples of interference from NASA NASA Reference Publication 1374 (RP-1374), "Elec...
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Guide
EN 55022 & EN 55011 Testing Conducted Emissions
The eighth mini guide in our series of seventeen relating to EN standards called up by ...
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Brochure
Directly cooled surge current choke
In addition to it's standard indirect cooling method REO now offers the direct cooling ...
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Article
BANANA SKIN REPORT OF ELECTRICAL/ ELECTROMAGNETIC INTERFERENCE
New kidney dialysis machines very susceptible to power quality issues Power quality...
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Guide
EN 61000-3-2 Limits for Harmonics
Limits for harmonic current emmissions (equipment input current up to and including 16A...
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Brochure
E-Mobility Load Energy Efficiency
The subject of electric charging stations continues to raise many questions. How will t...
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Article
BANANA SKIN REPORT OF ELECTRICAL/ ELECTROMAGNETIC INTERFERENCE
10MW power converters interfere with wired telephones over 12 miles away To cope wi...
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Guide
EN 61000-3-3 and EN61000-3-11 Flicker limits
Voltage fluctuations and flicker limits.
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Brochure
E-Mobility Testing for Safety
Testing for safety - setting new standards The manufacture and sale of electrical c...
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Article
BANANA SKIN REPORT OF ELECTRICAL/ ELECTROMAGNETIC INTERFERENCE
Variable speed motor drive interferes with plastics moulding machine The moulding ...
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Guide
EN 61000-4-11 Voltage Variations
The second in a series of seventeen guides. Testing and measurement techniques - V...
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Brochure
E-Mobility Using Energy Reliably
Using energy more reliably Do you know what the electric car of the future will loo...
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Article
Braking Resistors Application Sheet
The braking resistor is connected in the DC link, between the recifier and the switchin...
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Guide
EN 61000-4-14 Mains Voltage Fluctuations
Another of the mini guide in our series of seventeen - this one relates to testing for ...
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Brochure
Ecoload - Eco. Braking Resistors
Ecological braking resistors by REO Load, damping or braking resistors are essentia...
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Article
Column transformers
Nowadays these very large variable transformers are used mainly for test applications, ...
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Guide
EN 61000-4-16 Common-mode disturbances in the frequency range 0Hz to 150kHz
The ultimate practical guide in our series of seventeen concerns common-mode disturbanc...
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Brochure
EMC Components
Solution with practical benefits With REO your installation can be more efficient ...
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Article
Electric Shock Data
Have you ever considered what is the lowest current that is capable of causing a fatali...
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Guide
EN 61000-4-2 Personnel Electrostatic Discharge Immunity
The ninth mini guide in our series of seventeen relating to the test method for ESD imm...
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Brochure
HF Components
REO produces high frequency, power transformers and chokes on torodial basis or pot cor...
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Article
Electromagnetic field theory
It was the scientist Michael Faraday who first studied in detail the phenomena involvin...
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Guide
EN 61000-4-27 Immunity to three-phase unbalance
The fifteenth practical guide in our series of seventeen relating to the method of test...
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Brochure
High Current mains filter CNW107.3
Offshore-Applications Benefits: designed for offshore applications es...
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Article
Electronic regulators
THYRISTOR CONTROLLERS Thyristor regulators are used to control the energy supplied ...
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Guide
EN 61000-4-28 Immunity to power frequency variations
The sixteenth practical guide in our series of seventeen concerns the immunity of elect...
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Brochure
NTTAWS Protection
With the constantly growing demands of the railway engineering sector today higher prot...
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Article
EMC Fact Sheets 1 - 7
A set of fact sheets on basic EMC issues including - Introduction - Good Practice - Ins...
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Guide
EN 61000-4-3 Immunity to radiated radio frequencies
The tenth practical guide in our series of seventeen relating to the method of testing ...
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Brochure
Power Electronics Solutions
Nowadays many sectors of our industry consume enormous amounts of energy, which reuires...
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Article
EMC Filters installation guide
This information sheet explains where to postion a filter, cable routing considerations...
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Guide
EN 61000-4-4 Electrical Fast Transients
Testing for fast transient bursts is most important, not only for reliability but becau...
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Brochure
Protection Ratings IP (EMC Components)
The use of electrical and electronic equipment continues to increase, for example in en...
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Article
Filter Installation Guidelines
Essential information on how and where to install an EMC Filter; bonding, earth-leakage...
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Guide
EN 61000-4-5 Surge Immunity testing
Surge immunity testing.
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Brochure
REO Complete Solutions for Rail
REO offers not only complete units ready for use, but can also supply custom and one-off s...
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Article
Harmonics
Harmonics are always present but may not be apparent - so be aware!
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Guide
EN 61000-4-6 Conducted disturbances immunity
Testing and measurement techniques - Immunity to conducted disturbances induced by radi...
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Brochure
REO Components for Railway Applications
REO has set itself the task of contributing to making trains ever safer, today and in the ...
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Article
Isolation Transformers
An explanation of the various ways in which isolation transformers provide protection a...
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Guide
EN 61000-4-8 Magnetic field immunity
First in a series of seventeen guides. Power-frequency magnetic field immunity test. ...
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Brochure
REO ElectroMedical Solutions
Most modern medical examination and surgical procedures would not be possible without elec...
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Article
Low Voltage Directive
A fact sheet produced by Ken Lawrence - Electrical Safety Consultant on the key points of ...
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Guide
EN61000-4-13 Mains Harmonics and Interharmonics
A 58 page mini guide on the explanation of harmonics, their effects, sources, the probl...
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Brochure
REO Harmonic Filters for Drive Engineering
Modern electrical equipment, such as that used in drive engineering, is increasingly be...
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Article
Motorised transformers
Both variable transformers and potentiometers can be motorised. Normally the reversible mo...
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Guide
EN61000-4-29 DC Supply Voltage Dips, Short Interruptions and Variations
The fourteenth practical guide in our series of seventeen relating to the test method f...
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Brochure
REO Industrial Converter Solutions - Renewable
REO has been deeply involved in the development and manufacture of components in the fi...
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Article
Ohm
Everybody has heard about Ohm's Law it states that Voltage, Current and Resistance in a ci...
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Guide
Good EMC Engineering Practices for Panel Builders
This mini guide has been written to assist engineers who design and build industrial ca...
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Brochure
REO Industrial Converter Systems - Drives
Solutions with practical benefits with REO your installation can be more efficient. Whe...
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Article
Potentiometer dimensions
A potentiometer is a three terminal voltage divider, often shortened to pot. The resistanc...
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Brochure
REO IP Ratings for Braking resistors
The protection describes the specific environment for electrical equipment. Especially ...
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Article
Power Quality Fact Sheets 1-10
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Guide
Good EMC Engineering Practices in the Installation of Power Drive Systems
Another new handbook from REO provides an extensive range of essential information rel...
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Brochure
REO IP Ratings General
Electrical equipment is often required to work safely and reliably for many years under...
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Article
Power Quality Standard EN 50160
How good is our electricity supply?
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Brochure
REO Liquid Cooling
REO liquid cooling - An Increase in Effectivity Traditional methods of air cooling ...
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Article
Power Regulating Methods
Download the pdf below for a chart comparing different regulating methods.
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Guide
Mains Harmonics
Mains harmonic distortion is becoming an increasingly important issue. On 1st February ...
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Brochure
REO PowerQuality Solutions
Always faster, always more extensive is the technical progress in modern power electron...
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Article
Safety Fact Sheets 1 - 8
Essential information on electrical safety issues. Including - Selection of Fuses - Earthi...
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Guide
Power Quality
A practical guide on power quality problems, their sources, and the problems they cause...
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Brochure
REO Protection Ratings IP (Chokes)
The protection category describes the specific environment for electrical equipment. Es...
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Article
Subscriber Letter
To subscribe to our mini guide series please enter your details into the letter and fax it...
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Guide
Power Quality for Drives
This guide examines the selection of accessories for use with variable speed drives for...
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Article
Switch mode power supplies
Most computers and television sets derive their power from a switch mode source. In ind...
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Guide
Power Regulation
Power Regulation: A device or circuit which maintains a desired quantity (e.g. voltage,...
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Brochure
REOLAB Mobil
The voltage supply for more flexibility in the railway workshop The REOLAB mobil AC...
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Article
Techniques for assessing the electromagnetic environment
How to assess the EMC environment plus guidelines and simple calculations.
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Brochure
REOTRON Complete Solutions
Electricity, voltage, power - for decades REO has been involved in efficiently converti...
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Article
The effects of line reactors on mains harmonics
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Article
The harmonic solution
Harmonics are a serious problem and cannot be ignored for a variety of practical and le...
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Brochure
Variable DC power supply made by REO
Modern processes require modern power control methods. Applications like coating, semicond...
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Article
The history of power regulation
In 1837 Thomas Davenport a Vermont blacksmith built the first DC electrical rotating machi...
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Brochure
Efficient Components for Trains
This brochure offers guidance on how REO has set itself the task of contributing to making...
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Article
The new EMC Directive 2004/108/EC
The new UK EMC Regulations, implementing the second EMC Directive 2004/108/EC, are now in ...
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Article
Transformer dimensions
In a similar way to resistors, variable transformers are available in two forms, toroidal ...
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Article
Using UL ‘Yellow Cards’ to speed up your UL product safety approvals.
By John Showell of Product Approvals Ltd This article gives guidance on how to use ...
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Guide
Transformer Guide
One in a series of mini guides published by REO. This guide explains all about how tran...
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Article
What are the most commonly used solutions for solving power quality problems?
A summary of the different solutions used for solving power quality problems with the r...
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Brochure
REO Test Technology
To ensure compliance to certain standards, guidelines and guarantee product safety, m...
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Article
What causes power quality problems?
This fact sheet summarises the main EMC phenomena that cause power quality problems in ...
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Article
Where does Electromagnetic Interference come from?
Electromagnetic interference (EMI) can manifest in a variety of ways and the emission s...
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