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Compliance with the EMC Directive is only possible by demonstrating compliance
with the applicable EMC standards. EMC standards appear as three (3) types:
Basic standards, Generic standards, and Product standards.
Contents
Standards that call up emission and immunity tests and measurements are
called basic standards. They are general publications and not product related.
They are concerned with characteristics of Electromagnetic (EM) phenomena, EM
environment, test procedures for emissions and immunity measurements, they set
emission limits, give recommendations for immunity and also provide application guides.
They do not include prescribed limits and performance criteria which are
covered by generic, product or product family standards. There standards are
essential as they form the basis of EMC standardization and have a high
development priority.
Contents
Generic standards contain precise requirements for emission and immunity
for equipment used in specific environments. They are applicable to all
equipment used in that environment when no dedicated product or product family
standards exists. Generic standards were produced by CENELEC within a short
time frame to facilitate compliance with the EMC Directive. The first series
included Residential, Commercial and Light Industry environment.
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EN50081-1: Generic Emissions, Residential, Commercial and Light Industry
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EN50081-2: Generic Emissions, Industrial, Commercial and Light Industry
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EN50082-1: Generic Immunity, Residential, Commercial and Light Industry
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EN50082-2: Generic Immunity, Industrial, Commercial and Light Industry
Generic standards take precedence over basic standards while product standards
take precedence over generic standards. Contents
Product family standards define specific EN requirements and test
procedures for particular family of products. A product standard has precedence
over a product family standard.
Contents
EMC product standards specify the requirements and tests specific to the
product in question. The same rules apply as for product family standards.
Product standards do not include detailed measurement methods and test methods,
test set-ups etc. and refer to the basic standards. Product standards are used
by the generic standards for the selection of limits and test values. Product
standards take precedence over product family standards. If no product
standard exists for a particular product, then the relevant generic standards
apply when implementing the EMC Directive.
| Guidelines for Selection of EMC Standards |
Type
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Contents
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Aims
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Basic*
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- measurement and test methods
- instrumentation
- test set-up
- ranges of severity levels (immunity)
- no limits / no performance levels
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- reference documents
- no conformance testing of products
(Not in the list of official EC journal
but have quasi-legal status)
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Generic
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- precise and essential requirements
(limits) for all products intended for
use in one environment
- domestic
- industry
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- conformance testing of products (list of official EC journal)
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| Product-family |
- EMC requirements for product families
- more detailed performance criteria
- specific sets set-up etc.
- refer to basic standards for measurement/test ( no repetition)
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- conformance testing of products (list of official EC journal)
- precedence over generic standards but to be considered with them
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| (Dedicated) product |
- As product-family, but more specific
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- as product-family
- generally not needed for emissions
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* Refers only to basic standards for tests and measurements. There are other types of basic EMC standards
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