Home>BS standards>BS EN 61000-4-6:2014 pdf download

BS EN 61000-4-6:2014 pdf download

BS EN 61000-4-6:2014 pdf download.Electromagnetic compatibility (EMC) Part 4-6: Testing and measurement techniques一Immunity to conducted disturbances, induced by radio-frequency fields.
The source of disturbance covered by this part of IEC 61000 is basically an electromagnetic field, coming from intended RF transmitters, that may act on the whole length of cables connected to installed equipment. The dimensions of the disturbed equipment, mostly a subpart of a larger system, are assumed to be small compared with the wavelengths of the interfering signals. The leads entering and exiting the EUT (e.g. mains, communication lines, interface cables) behave as passive receiving antenna networks and signal conduction paths for both intentional and unintentional signals.
Between those cable networks, the susceptible equipment is exposed to currents flowing through’ the equipment. Cable systems connected to an equipment are assumed to be in resonant mode (A14, )J2 open or folded dipoles) and as such are represented by coupling and decoupling devices having a common mode impedance of 150 with respect to a reference ground plane. Where possible the EUT is tested by connecting it between two 150 c common mode impedance connections: one providing an RF source and the other providing a return path for the current.
This test method subjects the EUT to a source of disturbance comprising electric and magnetic fields, simulating those coming from intentional RF transmitters. These disturbing fields (E and H) are approximated by the electric and magnetic near-fields resulting from the voltages and currents caused by the test setup as shown in Figure la).
The use of coupling and decoupling devices to apply the disturbing signal to one cable at a time, while keeping all other cables nonexcited (see Figure ib)), can only approximate the real situation where disturbing sources act on all cables simultaneously, with a range of different amplitudes and phases.
Coupling and decoupling devices are defined by their characteristics given in 6.2.1. Any coupling and decoupling device fulfilling these characteristics can be used. The CDNs in Annex D are only examples of commercially available networks.BS EN 61000-4-6 pdf download.

Related PowerPoint Templates

Template Categories