CONFLICT OF INTEREST ALERT:
My employer makes component power supplies.
For a well-designed component power supply, I have found that the only
additional test data my agency engineers require is for the humidity test. At
least for component power supplies, 60950-1 test requirements meet or
unsubscribe
Ken Charlebois
Regulatory Approvals Specialist
Alcatel Canada Inc.
phone: 613-784-3204
fax: 613-599-3642
CONFLICT OF INTEREST ALERT:
My employer makes component power supplies.
Pre-compliance EMC testing of component power supplies is problematic. My
employer has directed a lot of resources helping customers fix their noise
problems. And occasionally, some of our (more clever) customers give us
I have a need to know a detail of the above standard more quickly
than I can obtain a copy, if someone would be so good as to help me.
What is the voltage range (percentage of rated voltage) defined for
heating and other tests in the above standard for normal and abnormal
operation?
Any help
Hi Helmut
According to the notice of China Quality Certification Center, the version
of safety standards for ITE, AV products and telecom terminals have changed.
The updated versions are GB4943-2001, Safety of Information Technology
Equipment, and the GB8898-2001, Safety of Audio, Video and
In all of the testing I have had done in China it appears that the lab is
using the new version of the standard. You might work with your agent to try
and persuade the lab. Some agents do this well, some not so well.
From: H. Koester [mailto:h.koes...@psi-si.de]
Sent: Thursday, July 03, 2003
Hello Group,
does anybody know when CQC (China Qualification Centre)
will accept the new version of the Harmonic Current Emission
Standard GB 17625.1-2003 for the CCC-Mark?
On the webpages of SAC (Standardization Administration of China)
this new version was annouced with an execute date
try here
http://www.atecorp.com/Equipment/Wiltron/6669M.htm
John Osborne
Technical Sales, PA
Pepperl + Fuchs
ATEX CERTIFIED AND IEC 61508 (S.I.L)
For all your Hazardous Area requirements
Absolute Encoders to SIL Rated Isolators to Zener Barriers
PEPPERL + FUCHS
77 RIPPONDEN ROAD
OLDHAM
In a message dated 7/2/2003 11:23:03 PM Central Daylight Time,
j...@jmwa.demon.co.uk writes:
Where did you get the idea that 'CE stops at 30 MHz'? The test for
*conducted emissions on the mains lead* goes up to 30 MHz. Emissions at
higher frequencies are controlled by the requirements for
I read in !emc-pstc that lfresea...@aol.com wrote (in 136.21721a07.2c34
9...@aol.com) about 'Source of noise' on Wed, 2 Jul 2003:
In messing around, at about 40 MHz, the PC noise is showing up on
the power cord. I guess noone worries because CE stops at 30 MHz.
Where did you get the
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