What is EN 51552?

EN 51552, also known as IEC 51552, is a standard that specifies the limits and methods of measurement for the emission of electromagnetic disturbances from appliances and electric tools. It covers a wide range of products, including household appliances, IT equipment, and power tools.

Limitations on Emission Levels

The EN 51552 standard sets specific limits on the amount of electromagnetic interference (EMI) that an appliance or electric tool can emit. These limits are designed to ensure that the electromagnetic environment in which the device operates remains compatible with other electrical devices and does not pose any health risks to humans or animals.

For example, according to the EN 51552 standard, the maximum permissible emission levels for conducted disturbances at radio frequencies range from 0.15 MHz to 30 MHz. These limits vary depending on the type of product and its intended use. Manufacturers must test their appliances to ensure compliance with these emission limits before placing them on the market.

Methods of Measurement

The EN 51552 standard defines specific methods for measuring the electromagnetic emissions of appliances and electric tools. These methods include both radiated and conducted measurements.

Radiated measurements involve assessing the amount of electromagnetic energy radiated by the product into the surrounding environment. This is typically done using specialized equipment, such as an anechoic chamber or an electromagnetic field probe.

Conducted measurements, on the other hand, assess the amount of electromagnetic energy conducted through the power supply lines of the device. This is done using a spectrum analyzer or other similar instruments.

Importance of Compliance

Compliance with the EN 51552 standard is crucial for manufacturers to ensure that their products do not interfere with other electrical devices and do not pose any risks to users or the environment.

By adhering to the limits and measurement methods set forth in this standard, manufacturers can demonstrate the electromagnetic compatibility of their products. This enhances the overall reliability and performance of appliances and electric tools, while also providing consumers with the reassurance that their devices are safe to use.

In conclusion, EN 51552 plays a vital role in regulating the emission of electromagnetic disturbances from appliances and electric tools. By establishing limits and measurement methods, this standard ensures that our electrical devices operate harmoniously and safely within the electromagnetic environment.