Haefely emc

Haefely EMC
Haefely EMC is part of the Special Technologies Platform of Hubbell Inc., an international manufacturer of electrical and electronic products for commercial, industrial, residential, utility, and telecommunications markets. The Haefely group, which also includes the brands Haefely High-Voltage Test and Tettex Instruments, has a history of over 100 years and currently employs over 100 people worldwide.
Haefely EMC focuses on development and manufacturing of conducted immunity test equipment designed to simulate the effects of interference sources on electronic, electrical and telecommunications products. The most common tests include electrostatic discharge (ESD), electrical fast transient/burst (EFT), lightning surge, magnetic fields, and power line quality (Dips and Interrupts).
About EMC
Electromagnetic interferences have various forms, and their effects range from minor annoyances and electronic equipment malfunctions, to complete damage of electronic equipment and even potential fatal accidents.
Electromagnetic compatibility Phenomena are either natural occurring (ESD, lightning surge), or man made (switching transients, mains network interruptions, radio frequency signals).
The Electromagnetic compatibility rule is based on the idea that two or more electrical driven devices must operate as intended within a specific electromagnetic environment, without interfering with each other.
Immunity tests are necessary to ensure that equipment will continue to operate as intended when subjected to interference sources, and emission tests should provide proof that the equipment will not cause interference that may impair some function in other equipment when operated in the same environment.
There are various International standard organizations that prepare and publish standards for individual or general electrical, electronic and related technologies.
The IEC (International Electrotechnical Commission) standards cover a large number of technologies, ranging from home appliances and office equipment, to semiconductors and fiber optics.
The IEC manages conformity assessment schemes that certify whether equipment, systems or components, conform to its international standards.
Within the European Union, there are also EN Standards prepared by the European Committee for Electrotechnical Standardization (CENELEC).
The EN Standards are based on the IEC Standards, and in most cases they are fully identical to the corresponding IEC Standards.
Other standard bodies include the International Telecommunication Union (ITU), the American National Standards Institute or ANSI, and Underwriters Laboratories Inc. (UL).
By European Law, manufacturers of electronic devices are advised to run EMC tests in order to comply with compulsory CE-labelling. The rule being “Undisturbed usage of electric devices for all customers should be ensured and the electromagnetic field strength should be kept to a minimum level.”
The CE marking (also known as CE mark) is a mandatory conformity mark on many products placed on the single market in the European Economic Area (EEA).
EMC tests fall under different categories which include pre-compiance testing and full compliance testing.
Pre-compliance testing provides manufacturers of electrical driven equipment an early indication of whether their products are likely to meet the requirements when full compliance tests are carried out by an external accredited calibration lab.
Accredited calibration labs are fully equipped with the necessary EMC testing equipment and are technically qualified to carry out the necessary tests according to the Standard test requirements. The calibration certificates that are issued, are proof that the specific product meets the requirements of the standard.
Links
http://www.haefelyemc.com - Haefely EMC Home Page
http://www.haefely.com - Haefely Test AG Home Page
http://www.iec.ch - IEC Home Page
http://www.electropedia.org - Free online multilingual dictionary of 20 000 electrical terms
http://www.ieee.org/portal/site - IEEE Home Page

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