Hello Mike, Let me also note that China is fairly strict on the altitude marking requirement. It’s either design for 5000 meters or mark for 2000 meters. There is nothing between those two. If your product is designed for 3000 meters, you still have to mark it for use only below 2000 meters. As Greg noted, the clearance requirement will cause hassles particularly in power supplies.
A number of countries have national deviations similar to the tropical environment test. Singapore and Mexico have nearly identical humidity test requirements except with a shorter soak time. If you are already testing for those countries, the Chinese humidity requirement shouldn’t create any new issues other than an extra day in the thermal/humidity chamber. Ted Eckert Compliance Engineer Microsoft Corporation ted.eck...@microsoft.com<mailto:ted.eck...@microsoft.com> The opinions expressed are my own and do not necessarily reflect those of my employer. From: Greg McClure [mailto:gmccl...@lexmark.com] Sent: Friday, May 16, 2014 10:30 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Chinese CCC Requirements for Altitude and Tropics Mike, For the 5000 m requirement, you need to multiply the Clearance requirements by 1.48 per Table A.2 of GB/T 16935.1 (equivalent to IEC 60664-1) to correct for the altitude change from 2000 m to 5000 m. This will also drive your Creepage requirements to match the Clearance values as Creepage cannot be less than Clearance. It is most helpful if you have these measurements documented in the CB report investigation with a note that Clearance was evaluated at 1.48 times the 2000 m values in the standard. For the Tropical Humidity requirement the maximum ambient of your product spec must be at least 35 C (which also drives the limits in your heating tests). The actual Tropical Humidity test is a minimum of 120 hours at 40 C +/- 2 C, 93 % +/- 3 % relative humidity (non-operating) followed by successfully passing the Electric Strength test. You should contact your test engineer at the agency writing your CB report and ask about the China National Deviations, there are more than these two requirements, although the rest should be less of an issue for a 220-240 V rated product. You can also get the China National Deviations with a subscription to the CB Bulletin on the IEC web-store. At least they are listed for IEC 60950-1 in the OFF category. Have not investigated other standards for China. Regards, Gregory H. McClure Lexmark Product Safety 859 232 3240 office 859 232 6882 fax On Fri, May 16, 2014 at 11:32 AM, Mike Sherman ----- Original Message ----- <msherma...@comcast.net<mailto:msherma...@comcast.net>> wrote: I'm exploring CCC marking a product for China. I've been told that unless the product passes certain tests, it has to be marked as not for use: above 2000 m; or in tropical regions. I'm assuming that the 2000 m issue is related to clearances, and the tropics to some sort of additional humidity conditioning. QUESTION Does any one have examples of what these specific tests/evaluations/requirements are? I would like, of course, to test my product before sending it to a Chinese CCC lab. Thanks, Mike Sherman Graco Inc. 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