BS EN 60939-3:2015 covers passive filters used to attenuate unwanted radio-frequency signals
(such as noise or interference) generated from electromagnetic sources.Both single and multi-channel filters within one enclosure or which are built on a printed
circuit board forming a compact entity are included within the scope of this specification.Filters constructed of capacitive elements where the inductance is inherent in the construction
of the filter are within the scope of this specification. Similarly, filters constructed of inductive
elements where the capacitance is inherent in the construction of the filter are also within the
scope of this specification. It is up to the manufacturer to state whether a given component is
to be designed as a capacitor, an inductor or a filter. Filters can include also other
components like resistors and/or varistors or similar components.This specification applies to passive filter units for electromagnetic interference suppression
for which safety tests are appropriate. This implies that filters specified according to this
specification will either be connected to mains supplies, when compliance with the mandatory
tests of Table 3 is necessary, or used in other circuit positions where the equipment
specification prescribes that some or all of these safety tests are required.This specification applies to passive filter units, which will be connected to an a.c. mains or
other supply (d.c. or a.c.) with a nominal voltage not exceeding 1 000 V a.c., with a nominal
frequency not exceeding 400 Hz, or 1 500 V d.c.NOTE For a.c. use, IEC 60384-14 applies to capacitors which will be connected to a.c. mains with a nominal
frequency not exceeding 100 Hz.This specification covers appliance filters (US) but does not cover facility filters, cordconnected
filters or direct plug-in filters. These other filters will be covered by another
sectional specification.Cross References:IEC 60027-1IEC 60050IEC 60060-1:2010IEC 60062IEC 60068-1:2013IEC 60068-2-1IEC 60068-2-2IEC 60068-2-6IEC 60068-2-14IEC 60068-2-17IEC 60068-2-20:2008IEC 60068-2-21IEC 60068-2-30:2005IEC 60068-2-45:1980IEC 60068-2-78IEC 60294IEC 60384-14:2013IEC 60664-1:2007IEC 60695-11-5IEC 60695-11-10IEC 60938-1:2006IEC 60938-2IEC 60939-1IEC 60940IEC 61140ISO 80000-1EN 60060-1EN 60062EN 60068-1EN 60068-2-2EN 60068-2-6EN 60068-2-1EN 60068-2-14EN 60068-2-17EN 60068-2-21EN 60068-2-20EN 60068-2-30EN 60068-2-45EN 60068-2-78EN 60294EN 60384-14EN 60695-11-5EN 60664-1EN 60695-11-10EN 60938-1EN 60938-2EN 60940EN 60939-1EN 61140EN ISO 80000-1EN 55017IEC 60068-2-13IEC 60068-2-27IEC 60085IEC 60335-1IEC 60384-9IEC 60947-1IEC 60990IEC 61112IEC 62109-1EN 50160EN 60068-2-13EN 60068-2-27EN 60085EN 60335-1EN 60384-9EN 60947-1EN 60990EN 61112EN 62109-1All current amendments available at time of purchase are included with the purchase of this document.