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EMC Electromagnetic Compatibility Testing
The EMC Directive ensures equipment used in the environment does not introduce unacceptable electromagnetic inference and is not affected by such inference. The manufacturer can show compliance with the EMC directive using harmonised standards published in the Official Journal or by the preparation of a Technical Construction File which is reviewed by a Competent Body. After this process, a CE mark can be affixed to the product.
Disturbance free electrical appliances
In addition to being safe and reliable, electrical appliances must also be disturbance-free in various environments. Appliances that fulfil these requirements are electromagnetically compatible. Electromagnetic compatibility (EMC) means that the equipment does not introduce intolerable electromagnetic disturbances into its environment, and is not affected by such disturbances.
The electromagnetic environment
For the satisfactory functioning of electrical appliances, different disturbance levels have been determined for products and location i.e. residential, commercial and industrial areas. All electrical equipment should comply with the test limits and levels specified in the applicable standards and:
- No appliance may produce disturbances exceeding the limit.
- All appliances must be able to withstand disturbances to the level stated in the standard.
Electromagnetic emissions
Any phenomena by which electromagnetic energy emits from the equipment (except as originally intended) is considered an electromagnetic emission. Interference on a TV screen, cracking noises on the radio and operational failure of information technology equipment are often caused by other appliances. Such disturbances can be transmitted from one device to another either through wiring, or by electromagnetic radiation.
Immunity
All electrical equipment must also be able to function properly in the presence of electromagnetic disturbance from the environment. For example, electro-medical equipment in hospitals may be disturbed by mobile phones used nearby. The use of mobile phones is usually not allowed in such environments.
Summary of the European Union’s EMC requirements
The manufacturer of the product, the manufacturer’s representative or an authorised importer shall make sure that the product to be produced or assembled conforms to the requirements of the EMC directive and any other valid directives. These directives include among others the low voltage, radio and telecommunications terminal equipment, machinery and gas appliance directives. In the majority of countries, there are stringent legal requirements for electrical or electronic products.
Our E&E laboratory testing facility can conduct a full range of tests for home electrical appliances, IT electronics, telecommunications and lighting products in the following areas:
- Product Safety
- Electro Magnetic Emission
- Electro Magnetic Interference
- Product Performance and Reliability
- Environmental
- RoHS and WEEE complaince
SGS can also help your electrical and electronics products meet the following international safety and quality requirements
Product Certifications
- CB Scheme (Global)
- CCA-EMC (Europe)
- Australia and New Zealand (Competent Body)
- USA (FCC) and Canada
- South-Africa and Russia
Testing Scopes / Applied Products
- ITE & Mobile Communication Product
- Desktop PC/ Notebook/ PCMCIA Card/ Storage Device/ Mobil Phone / PDA/ Disk Array/ Digital Camera
- Automotive Accessories
- Medical Device
- Machinery
- Household appliance (Air Conditioner, Refrigerator, Garden equipment, etc..)
- Lighting
- Toy/Sporting Goods
- Trains and Railway equipment
- Electricity Meters
Accreditation
- ISO 17025 (UKAS, FINAS, CNLA, etc. . . .)
- FCC (US – Federal Communication Committee)
- VCCI (Japan)
- C-Tick (Australia)
- BSMI (Taiwan)
- CCC (China)
- EU Notified body (UK, Spain, Germany, Finland)
Clients benefits of EMC Testing
- Comply with national and international standards
- Verify performance
- Brand protection
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