EN 55014-2 Unintentional Radiator Testing of Family Appliances
EN 55014-2 addresses the electromagnetic emission and immunity of appliances that use electricity. Voltages no more than 250 for single-phase apparatus are connected to phase, neutral, and 480 V for other appliances.
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Summary of EN EMC Requirements for Household Appliances and Electrical Tools
The EN 55014-2 covers motors, heating elements, or a combination of the two. These may contain electric or electronic circuitry. They may also be powered by the mains, transformer, batteries, or by any other electrical power source.
The following are included in the scope of this EMC device testing standard.
- Microwave ovens for domestic use and catering.
- Cooking hobs and cooking ovens, heated using RF energy.
- Induction cooking appliances.
- Appliances for personal care equipped with radiators in the range of UV to IR.
- Power supplies and battery chargers are provided with or intended for apparatus within the scope of this standard.
The EN 55014-2 compliance test does not apply to:
- Radio equipment for lighting purposes.
- Apparatus designed strictly for heavy industrial purposes.
- Apparatus intended to be part of the fixed electrical installation of buildings.
- Apparatus intended to be used in locations where special electromagnetic conditions prevail.
- Medical electrical appliances.
- Personal computers and similar equipment.
- Radio transmitters.
Lastly, the object of this standard is to specify the immunity requirements for apparatus defined in the scope. This is only for continuous and transient, conducted, and radiated electromagnetic disturbances.
EN 55014-2 EMC Regulatory Compliance Conditions
When measurements of disturbance are made, the appliance is operated in the following conditions below.
The appliances are operated from a supply that provides the rated voltage and rated frequency of the appliance. The duration is not restricted unless marked accordingly.
During electromagnetic compatibility testing, devices are operated under normal operating conditions. Transformer toys are tested with the transformer being supplied. If the toy is supplied without a transformer, it is tested with an appropriate transformer.
The radiofrequency laboratory tests concerning electrostatic discharges, transients, surges, and voltage dips are carried out during each mode of operation. The tests concerning the electromagnetic fields and current injection are performed during the scan time. These are conducted at random while the selected modes of the EUT are set into operation.
Multifunction equipment, which is subjected simultaneously to different testing conditions, is tested with each function operated in isolation. However, this is only if it can be achieved without modifying the equipment internally.
In the case of an EUT with an automatic cycling program, the scan time is started at random. The test is repeated until the cycle is finished.
The configuration and mode of operation during tests are precisely noted in the test report. This is to easily reproduce the unintentional radiator requirements if necessary.
Expert EN 55014-2 Regulatory Compliance Testing
Keystone has a full lab of test equipment which permits us to provide short lead times on scheduling. Keystone Compliance can accommodate fixed, mobile and portable devices of all sizes. In addition to EN 55014-2 testing, Keystone has a full scope of expertise including environmental and package testing such as ingress protection, temperature, and vibration.