Any of the official CB and NB test-houses or organizations from the European Economic Area will be accepted for use in all of Europe as long as all the country deviations have been specified and tested for and reported on the CB report. Even though I don't directly answer your question as to which is a ranking of the test houses, what is more important to understand is that any CB test report that has been prepared correctly (i.e. the mention of EN60950 instead of or in addition to the generic IEC 950, the specific country deviations, the language and required statements, etc., in the CB report) Having a listed power supply will suffice most of the time but when integrated into a product the final integrator must worry whether the power supply meets all the requirements of the final destination country in order to have properly applied the CE mark. I hope I have somewhat answered you question. Hans T. Mellberg
______________________________ Reply Separator _________________________________ Subject: Major standard for powersupply Author: Non-HP-owner-emc-pstc ([email protected]) at HP-Boise,mimegw2 List-Post: [email protected] Date: 01/30/97 10:56 PM Dear Sirs, I'm working at a branch of german testhouse in Japan. My customer, a japanese power supply manufacture, gave me the following question s. In EU many powersupply manufactures apply for the approval from organization, fo r example, VDE, TUV, LGA, SEMKO, DEMKO, etc. Which mark/organization is most applied for by manufactures? No.1, 2, 3...? Which mark is convenient and major in Europa, and brings us many benefit? If you have any information, please tell me. I thank you in advance. Best regards Kyoko Nagata INTERTest Japan Ltd.

