BS EN 55017:2011

What is BS EN 55017 - Methods of measurement of the suppression characteristics of passive EMC filtering devices about?  

BS EN 55017 discusses methods of measurement of the suppression characteristics of passive EMC filtering devices. Passive EMC filtering devices are used to ensure that electrical and electronic equipment does not generate, or is not affected by, electromagnetic disturbance. BS EN 55017 specifies methods to measure the radio interference suppression characteristics of passive EMC filtering devices used in power and signal lines, and in other circuits. The defined methods may also be applied to combinations of over-voltage protection devices and EMC filtering devices. 

The measurement method covers the frequency range from 9 kHz to several GHz depending on the device and test circuit. BS EN 55017 describes procedures for laboratory tests (type tests) as well as factory tests. Test methods with and without bias conditions are defined. 

Who is BS EN 55017 - Methods of measurement of the suppression characteristics of passive EMC filtering devices for? 

BS EN 55017 on passive EMC filtering devices is useful for: 

• Telecommunication component manufacturers 
• Telecommunication equipment manufacturers 
• Design engineers 
• Quality control personnel 

Why should you use BS EN 55017 - Methods of measurement of the suppression characteristics of passive EMC filtering devices?  

EMC filtering devices are produced using deceptively simple combinations of inductors, capacitors, and resistors. The suppression characteristics of EMC filters and components used for the suppression of EM disturbances, referred to in this standard as EMC filtering devices, are a function of numerous variables such as impedance of the circuits to which they connect, operating voltage and current, and ambient temperature. BS EN 55017 specifies uniform test methods that will enable the comparison of filtering and suppression characteristics determined by test laboratories or specified by manufacturers. 

Measurement procedures are provided for unbiased and biased conditions. Measurements under bias conditions are performed to determine potential non-linear behaviour of the EMC filtering devices such as saturation effects in inductors with magnetic cores. This testing serves to show the usability in a specific application (such as frequency converters that produce high amplitudes of common-mode pulse current and thus may drive inductors into saturation). The measurement under bias conditions may be omitted if the non-linear behaviour can be determined by other methods (e.g., separate saturation measurement of the inductors used). Using BS EN 55017 you can specify methods to measure the radio interference suppression characteristics of passive EMC filtering devices used in power and signal lines, and in other circuits.