In message <ccc870f5.322a2%[email protected]>, dated Tue, 13
Nov 2012, Ken Javor <[email protected]> writes:
For a large piece of industrial equipment which is floor-standing and
wider in length and possibly height than the uniform field area (UFA)
specified in EN61000-4-3, how is the test performed?
Do you not have the standard (EN 61000-4-3-: 2006+A2 2010)? Clause 6.2
on page 15 states:
If the area intended to be occupied by the face of the actual EUT is
larger than 1,5 m × 1,5 m and an UFA with sufficient dimensions
(preferred method) can not be realised, then the area to be occupied by
the EUT may be illuminated in a series of tests (“partial
illumination”).
Either:
– a calibration shall be performed at different radiating antenna
locations so that the combined UFAs cover the area which will be
occupied by the face of the EUT, and the EUT shall then be tested with
the antenna in each of these positions successively,
– or the EUT shall be moved to different positions so that each part
of it falls within the UFA during at least one of these tests.
NOTE 2 Each of the antenna positions requires a full field calibration.
[NOTE 1 is in a preceding text.]
--
OOO - Own Opinions Only. See www.jmwa.demon.co.uk
The longer it takes to make a point, the more obtuse it proves to be.
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
-
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