EN
EN 55011: Industrial, scientific and medical equipment - Radio-frequency disturbance characteristics
Standard Overview
EN 55011 is a product family standard (largely based on CISPR 11) for industrial, scientific and medical (ISM) equipment and electro-discharge machining (EDM) and arc welding equipment. This standard sets forth procedures for the measurement of radio-frequency (RF) disturbances and limits within the frequency range of 9 kHz to 400 GHz. Requirements for ISM lighting apparatus and UV irradiators operating at frequencies within the ISM frequency bands defined by the ITU Radio Regulations are also contained in EN 55011.
ISM equipment or appliances tested against EN 55011 under the EMC Directive are designed to generate and use locally, RF energy for industrial, scientific, medical, domestic or similar purposes, excluding applications in the field of telecommunication. Typical ISM applications are the production of physical, biological, or chemical effects such as heating, ionization of gases, mechanical vibrations, hair removal and acceleration of charged particles.
Compliance with this standard gives a partial presumption of conformity with the European EMC Directive, 2004/108/EC. EN 55011 is an emission only standard covering radiated and conducted emissions. Most products will also require an assessment of immunity standards, such as:
(1) EN 61326-1 – Electrical equipment for measurement, control, and laboratory use; or
(2) EN 61000-6-2 – Generic Standards Immunity for industrial environments. These aforementioned two specifications contain additional requirements for electromagnetic interference and transient phenomenon. Additionally, devices powered via AC mains may require additional testing for power line harmonics and power line flicker.
Although the term medical is in the title of this standard, EN 55011 does not apply directly to medical devices within the scope of the Medical Device Directive 93/42/EEC. The reason is that for medical devices falling within the scope of 93/42/EEC, the EMC directive does not apply directly, but rather the EMC directive’s essential requirements are incorporated within the Medical Device Directive. Other standards harmonized under the Medical Device Directive, namely EN 60601-1-2 call upon EN 55011 to assess the electromagnetic disturbance characteristics of medical devices.
The manufacturer and/or supplier of ISM equipment shall ensure that the user is informed about the class and group of the equipment, either by labeling or by the accompanying documentation. In both cases, the manufacturer/supplier shall explain the meaning of both the class and the group in the documentation accompanying the equipment.
EN 55011 separates equipment into two groups:
EN 55011 Group 1 contains all ISM equipment in which there is intentionally generated and/or used conductively coupled radio-frequency energy which is necessary for the internal functioning of the equipment itself.
EN 55011 Group 2 contains all ISM equipment in which radio-frequency energy is intentionally generated and/or used in the form of electromagnetic radiation for the treatment of material, and EDM and arc welding equipment. Excluded from the testing requirements and limits of EN 55011 are components and subassemblies not intended to perform any stand-alone ISM function.
EN 55011 separates equipment of this type into two classes:
EN 55011 Class A is equipment suitable for use in all establishments other than domestic and those directly connected to a low voltage power supply network that supplies buildings used for domestic purposes.
Class A Emission Limits
EN 55011 Class B is equipment suitable for use in domestic establishments and in establishments directly connected to a low voltage power supply network that supplies buildings used for domestic purposes.
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ISM equipment or appliances tested against EN 55011 under the EMC Directive are designed to generate and use locally, RF energy for industrial, scientific, medical, domestic or similar purposes, excluding applications in the field of telecommunication. Typical ISM applications are the production of physical, biological, or chemical effects such as heating, ionization of gases, mechanical vibrations, hair removal and acceleration of charged particles.
Compliance with this standard gives a partial presumption of conformity with the European EMC Directive, 2004/108/EC. EN 55011 is an emission only standard covering radiated and conducted emissions. Most products will also require an assessment of immunity standards, such as:
(1) EN 61326-1 – Electrical equipment for measurement, control, and laboratory use; or
(2) EN 61000-6-2 – Generic Standards Immunity for industrial environments. These aforementioned two specifications contain additional requirements for electromagnetic interference and transient phenomenon. Additionally, devices powered via AC mains may require additional testing for power line harmonics and power line flicker.
Although the term medical is in the title of this standard, EN 55011 does not apply directly to medical devices within the scope of the Medical Device Directive 93/42/EEC. The reason is that for medical devices falling within the scope of 93/42/EEC, the EMC directive does not apply directly, but rather the EMC directive’s essential requirements are incorporated within the Medical Device Directive. Other standards harmonized under the Medical Device Directive, namely EN 60601-1-2 call upon EN 55011 to assess the electromagnetic disturbance characteristics of medical devices.
The manufacturer and/or supplier of ISM equipment shall ensure that the user is informed about the class and group of the equipment, either by labeling or by the accompanying documentation. In both cases, the manufacturer/supplier shall explain the meaning of both the class and the group in the documentation accompanying the equipment.
EN 55011 separates equipment into two groups:
EN 55011 Group 1 contains all ISM equipment in which there is intentionally generated and/or used conductively coupled radio-frequency energy which is necessary for the internal functioning of the equipment itself.
EN 55011 Group 2 contains all ISM equipment in which radio-frequency energy is intentionally generated and/or used in the form of electromagnetic radiation for the treatment of material, and EDM and arc welding equipment. Excluded from the testing requirements and limits of EN 55011 are components and subassemblies not intended to perform any stand-alone ISM function.
EN 55011 separates equipment of this type into two classes:
EN 55011 Class A is equipment suitable for use in all establishments other than domestic and those directly connected to a low voltage power supply network that supplies buildings used for domestic purposes.
Class A Emission Limits
EN 55011 Class B is equipment suitable for use in domestic establishments and in establishments directly connected to a low voltage power supply network that supplies buildings used for domestic purposes.
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Products Used in Testing
Keysight 11947A Transient Limiter | 9 kHz – 200 MHz
- Protects the spectrum analyzer input from damage caused by high-level transients
- Frequency range of 9 kHz to 200 MHz
- Insertion loss of 10 dB
PMM 9010 | 10 Hz – 30 MHz
- The marker is a very powerful feature, providing an easy-to-read frequency/amplitude value through a simple knob rotation in the window span
- Pre-loaded limits for sweep mode are stored in a nonvolatile memory, providing for CISPR Compliance
- Simultaneous detectors, QP-PK-AVGRMS, for time-coherent measurements, provide parallel indications at every frequency value in the range
Rohde & Schwarz ESU40 | 20 Hz – 40 GHz
- Automatic and interactive measurement functions
- Parallel IF analysis
- Up to three detectors Average detector with meter time constant (CISPR-Average) RMS-Average detector APD (amplitude probability distribution to CISPR 16)
Rohde & Schwarz ESW44 | 1 Hz – 44 GHz
- Standard-compliant EMI measurements in spectrum analyzer mode
- RF performance that meets exacting demands
- Exceptionally wide dynamic range
Com-Power LI-125 Line Impedance Stabilization Network (LISN)
Com-Power PC-114 Precompliance Test System
- Spectrum Analyzer
- Near Field Probes
- Biconical Antenna
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NOTE 1
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NOTE 2
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NOTE 3
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For more information and to purchase this standard go to standards.cen.eu
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Industrial locations and medical apparatus, e.g. the presence of welding machines.
Heavy inductive or capacitive loads are frequently switched.
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EN 50173: Information technology - Generic cabling systems
EN 50173 group of standards specifies:
The structure and configuration of the backbone cabling subsystems of generic cabling systems within the types of premises defined by the EN 50173 series of standards
Channel performance requirements in support of the EN 50173 series of standards
Link performance requirements in support of the EN 50173 series of standards
Backbone cabling reference implementations in support of the standards in the EN 50173 series
Component performance requirements in support of the standards in the EN 50173 series
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EN 50173-1 General requirements
EN 50173-2 Office buildings
EN 50173-3 Industrially used buildings
EN 50173-4 Private residential units
EN 50173-5 Computing centers
There is also a difference in the individual components such as cables and connection technology and also in the installation of these components.
The individual components are classified into the following categories:
Category 5 up to 100 MHz
Category 6 up to 250 MHz
Category 6A up to 500 MHz
Category 7 up to 600 MHz
Category 7A up to 1000 MHz
A distinction is drawn between installed components according to transmission classes:
Class D up to 100 MHz
Class E up to 250 MHz
Class EA up to 500 MHz
Class F up to 600 MHz
Class FA up to 1000 MHz
Certification and checking of the limiting values for the measurement technology of the installed transmission routes.
A distinction is drawn between two models for the transmission routes for the cabling.
Permanent links are those which cover the laid installation cable and also the patch panel permanently connected to the end of the cable and the junction box.
Channel Links are those where the patch cable also used in the patch panel and the junction box can also be
EN 50191: The Erection and Operation of Electrical Test Installations
EN 50191 is about providing protection against electric shock. The standard addresses specifically the erection and operation of electrical test installations in the workplace. It incorporates provisions from 11 other European Norm standards to provide details of good engineering practice when testing electrical equipment.
Two harmonized standards are referred to in the text of EN 50191: HD 384 for voltages up to 1000 V and HD 637S1 for voltages exceeding 1000 V. Both documents are used when considering equipment for which the power supply does not fall within the scope of EN 50191. Table I lists other standards used as normative references. It is important to note that EN 50191 has no reference to CE marking or any other manufacturing product standard.
The standard details five definitive test installations and the levels of protection required:
Test Station with Automatic Protection against Direct Contact.
The use of test enclosures encapsulates the device under test (DUT) and prevents any contact when the tests are applied.
Test Station without Automatic Protection against Contact.
This could be a product that is too large to allow the use of a test enclosure. Prohibited areas must be used with fixed barriers to prevent access to the DUT from unauthorized personnel.
Test Laboratories and Experimental Stations.
Each test area within a laboratory must be individually protected and isolated. A common emergency cutoff could increase risk to another area, increasing possible hazards at other test stations.
Temporary Test Station.
A skilled engineer conducts testing on a client's site or sets up a one-time test station to test a specially designed device. Individual assessment of the area and exclusion zones must be implemented to provide for the specific location and situation.
Test Station without Test Personnel in Permanent Attendance.
In situations in which automated production line or life testing is undertaken, full protection from
EN 55022: Information technology equipment - Radio disturbance characteristics - Limits and methods
EN 55022 is a modified derivative of CISPR 22 that applies to information technology equipment (ITE) as defined as any equipment:
– Which has a primary function of either (or a combination of) entry, storage, display, retrieval, transmission, processing, switching or control of data and of telecommunication messages and which may be equipped with one or more terminal ports typically operated for information transfer;
– With a rated supply voltage not exceeding 600 V.
Procedures are given for the measurement of the levels of spurious signals generated by the ITE and limits are specified within the standard for protection of radio services in industrial, commercial or residential environments in the frequency range of 9 kHz to 400 GHz for both class A and class B equipment.
The intention of this publication is to establish uniform requirements for the radio disturbance level of the equipment contained in the scope, to fix limits of disturbance, to describe methods of measurement and to standardize operating conditions and interpretation of results.
Compliance with this standard gives partial presumption of conformity with the European EMC Directive, 2004/108/EC. Most products will also require assessment to the companion standard EN 55024, for immunity to electromagnetic interference and transient phenomenon. Additionally, devices powered via the AC mains, may require additional testing for power line harmonics and power line flicker.
Information Technology Equipment (ITE), as would be tested for EN 55022, includes computer hardware and software, operating systems, web-based information and applications, telephones and other telecommunications products, video equipment and multimedia products, information kiosks, and office products such as photocopiers and fax machines.
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EN 61000-6: Electromagnetic compatibility (EMC) - Part 6: Generic Standards
EN 61000-6 is an electromagnetic compatibility (EMC) standard developed to keep interference between electronic devices under control to reduce disturbance and improve immunity in residential, industrial, and commercial environments.
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1) EN 61000-6-1: Electromagnetic compatibility (EMC) - Part 6-1: Generic standards - Immunity for residential, commercial and light-industrial environments
Applies to electrical and electronic apparatus intended for use in residential, commercial and light-industrial environments both indoor and outdoor. Immunity requirements in the frequency range 0 Hz to 400 GHz are covered. This generic EMC immunity standard is applicable if no relevant dedicated product or product-family EMC immunity standard exists. This standard applies to apparatus intended to be directly connected to a low-voltage public mains network or connected to a dedicated DC source which is intended to interface between the apparatus and the low-voltage public mains network. This standard applies also to apparatus which is battery operated or is powered by a non-public, but non-industrial, low-voltage power distribution system if this apparatus is intended to be used in the locations. This standard supersedes EN 50082-1.
2) EN 61000-6-2: Electromagnetic compatibility (EMC) - Part 6-2: Generic standards - Immunity for industrial environments
Applies to electrical and electronic apparatus intended for use in industrial environments. Immunity requirements in the frequency range 0 Hz to 400 GHz are covered. This generic EMC immunity standard is applicable if no relevant dedicated product or product-family EMC immunity standard exists. This standard applies to apparatus intended to be connected to a power network supplied from a high or medium voltage transformer dedicated to the supply of an installation feeding manufacturing or similar plant, and intended to operate in or in proximity to