Re: 3m vs. 10m chamber for radiated immunity

2003-07-22 Thread Ken Javor
I made some measurements once in a 3 meter anechoic chamber built for EN61000-4-3. I was interested in the disturbance a wire causes in a field due to picking up the field, the resultant currents flowing in such a way as to cancel the field that caused them, etc. In order to assess the effect,

Re: voltage dips

2003-07-22 Thread John Woodgate
I read in !emc-pstc that Paolo Peruzzi paolo.peru...@esaote.com wrote (in ofce6b2c1c.06aec745-onc1256d6b.00371...@esaote.com) about 'voltage dips' on Tue, 22 Jul 2003: Is there any basic standard concerning voltage dips and short interruptions immunity for equipment with input current larger

RE: voltage dips

2003-07-22 Thread rehel...@mmm.com
Mike, are you aware of the major changes to the 2nd revision of IEC 61000-4-11? Thanks, Bob Heller 3M EMC Laboratory, 76-1-01 St. Paul, MN 55107-1208 Tel: 651- 778-6336 Fax: 651-778-6252 ===

CISPR14art 1

2003-07-22 Thread Alan E Hutley
The Group Remember the Hairdryer saga and 55014. Well a report has now been issued which was prepared by Richard Marshall on behalf of Radiocommunications agency in the UK. It makes for very interesting reading. Radiocommunications Agency has announced a Study into how CISPR14 Part 1 (Emissions

RE: voltage dips

2003-07-22 Thread Mike Hopkins
There is a new document in the works, IEC 61000-4-34, for dip interrupt testing of products drawing greater than 16A. It is currently a CD (Committee Draft). TC77A WG6, who is responsible for this document, meets in Spain in September, after which a CDV (Committee Draft for Vote) is possible. It

RE: voltage dips

2003-07-22 Thread Cole, Bryan [LBRT/CCC]
Paolo, I am not aware of a commercial or EN standard for more than 16 amperes. There are some military standards that also address this. The one that I have seen in the past was MIL-STD-704. From a product specification perspective, the customer or company can create a standard calling many

voltage dips

2003-07-22 Thread Paolo Peruzzi
Hi all, Is there any basic standard concerning voltage dips and short interruptions immunity for equipment with input current larger than 16 amps per phase? And more: can a product standard prescribe such test for equipment with more than 16 amps per phase and still refer to 61000-4-11 as

AW: Need help with Japanese language draft standard

2003-07-22 Thread Schaefer, Rolf
Joe, certainly not a big help, the following is the English version of MPHPT's press release. It says it's a consultation paper - unfortunately it just refers back to the Japanese document. Rolf Schäfer _ Telecommunications http://www.soumu.go

3m vs. 10m chamber for radiated immunity

2003-07-22 Thread neve...@comcast.net
Has anyone investigated the difference in performance of different chamber sizes when performing the radiated immunity (-3) test at low frequencies (e.g., between 80 MHz and 100-150 MHz)? The field uniformity is calibrated in E-field, but I would expect the total EM field (E and H components)