Don,

Yes, I have. These are custom mains transformers inherited from a former
division of our company. I often wondered why the detail drawings required
them to be CE marked. I have been removing that requirement as we specify new
transformers. In fact, I would truly like to come up with a standard set of
notes regarding compliance for these custom types. Compliance to what
standard, designed to meet, etc. What is the proper language to use and
markings to require? The end products are covered by EN 60065 / UL 60065 and
the markets are world-wide. Anyone have any standard notes they would like to
share?

Thanks for any and all comments.

Scott Douglas

Umbdenstock, Don wrote: 

Has anyone ever noticed a CE mark on an internal transformer?

 

Don 




  _____  


From: [email protected] [mailto:[email protected]] On Behalf Of Umbdenstock,
Don
Sent: Monday, October 15, 2007 4:43 PM
To: [email protected]
Subject: FW: CE marking of transformers per LVD

 

Dear Forum Members,

 <http://ec.europa.eu/enterprise/electr_equipment/lv/guides/chap3.htm>
http://ec.europa.eu/enterprise/electr_equipment/lv/guides/chap3.htm

I am struggling a bit with components – when they are excluded and when they
are not. 

I understand, for example, that a transformer would need to be CE marked
(clause 9, 4th paragraph).  Does this apply to just external transformers,
such as ac to ac power adapters?  Or does this apply to custom made
transformers to be used internally as part of an overall circuit in the same
area that includes other basic components such as capacitors, resistors, and
inductors?  It would seem logical that it would not apply to internal
transformers as these are not user replacement parts such as light bulbs or
fuses, and additional assessment is required within its intended application
to determine host product compliance with the harmonized standard.  

What is your understanding regarding the CE marking of transformers per the
LVD?

Thank you in advance for your assistance. 

Don Umbdenstock
Manager Compliance Engineering

Tyco Safety Products / Sensormatic
6600 Congress Avenue
Boca Raton, FL 33487 USA
Phone: 561.912.6440
 <mailto:[email protected]> [email protected]

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