MET Labs in California is fond of showing a video of this test. The equipment in the test was about a quarter of a rack tall. It took almost an hour before the flames really started in earnest, and a couple of hours before the flames finally subsided. In the process it was a real bonfire. Flames were 5 feet high at times. Personally, I am rather dubious about the relevance of this test. Why not just stick the equipment into a blast furnace and be done with it. I also felt the seismic test was rather unrealistic, since the resonances of the equipment and therefore peak amplitudes it is subjected to will dramatically change, depending on the actual "seismic-approved" rack it is installed in. Also, in real life there will be other equipment in the rack; not just a couple of dummy weights as in the test. One can expect the equipment to behave very differently in a real installation. Bob Wilson TIR Systems Ltd. Vancouver. -----Original Message----- From: Dave Lorusso [mailto:[email protected]] Sent: May 7, 2002 7:30 AM To: Robert Wilson Cc: [email protected] Subject: RE: What Every Startup Needs to Know About NEBS I showed a film clip of failing the fire resistance test at the last Verizon NEBS Symposium (www.verizonnebs.com <http://www.verizonnebs.com/> ), you're right, it was a big hit. Before I showed it, I asked the audience "How many of you played with fire when you were a kid?". At least 2/3 of the audience raised their hands. Not too surprising from a group of compliance professionals who burn stuff for a living. The fire resistance test is definitely my all time favorite compliance test - the seismic test is a close second. Best regards, Dave -----Original Message----- From: Robert Wilson [mailto:[email protected]] Sent: Monday, May 06, 2002 7:38 PM To: [email protected] Subject: RE: What Every Startup Needs to Know About NEBS You never showed photos of the NEBS flame test! Nothing like burning your equipment to a crisp with a 1 foot high flame from a line burner, for good entertainment :) Bob Wilson TIR Systems Ltd. Vancouver. -----Original Message----- From: Dave Lorusso [mailto:[email protected]] Sent: May 6, 2002 3:11 PM To: '[email protected]' Cc: '[email protected]'; '[email protected]' Subject: What Every Startup Needs to Know About NEBS FYI, I just had an article published in Evaluation Engineering magazine titled: "What Every Startup Needs to Know About NEBS". You can view it at: http://www.evaluationengineering.com/archive/articles/0502emc.htm The article details the steps we took at General Bandwidth to pass NEBS testing our first time out. There's a pretty good resource section at the end that's not in the print copy. I hope the group finds it useful. Best regards,
Dave Lorusso Director of Product Integrity General Bandwidth, Inc. 12303 Technology Blvd. Austin, TX 78727 512-681-5480 (phone) 512-681-5481 (fax) [email protected] www.genband.com <http://www.genband.com/>
