Hello Dwight, There is an ETSI standard which defines the mechanical dimensions and form factor for racking systems housing Telecom equipment within the public network and customer premises, I think this would also apply to your products.
ETS 300 119 is a four part standard... ETS 300 119-1: "Equipment Engineering (EE); European telecommunication standard for equipment practice Part 1: Introduction and terminology". ETS 300 119-2: "Equipment Engineering (EE); European telecommunication standard for equipment practice Part 2: Engineering requirements for racks and cabinets". ETS 300 119-3: "Equipment Engineering (EE); European telecommunication standard for equipment practice Part 3: Engineering requirements for miscellaneous racks and cabinets". ETS 300 119-4: "Equipment Engineering (EE); European telecommunication standard for equipment practice Part 4: Engineering requirements for subracks in miscellaneous racks and cabinets". There are different configurations allowed and so I've only copied the text from Part 2, you can freely download the most recent updates of each directly from ETSI (the updates may have been renumbered as ENs so you will also need to search on EN 300 119-x). >From previous experience you'll have to come up with a rack mounting kit arrangement which will cover each of the various rack standards - EIA, NEBS and ETSI if you're building a system for use everywhere. I hope this helps. Best regards, Edward Edward Fitzgerald International Approvals Consultant Direct Tel. : +44 1202 20 09 22 GSM Tel. : +44 4685 33 100 European Technology Services Specialist Global Compliance Consultancy Offices in Australia, Canada and the UK. http://www.ets-tele.com [ Extracted from ETS 300 119-2 - Equipment Engineering (EE); European telecommunication standard for equipment practice Part 2: Engineering requirements for racks and cabinets] 3 Coordination dimensions for racks/cabinets 3.1 Height The height dimension (H) includes covers, feet or castors if these are an integral part of the rack/cabinet structure. For telecommunication centres, H shall be 2 200 mm. For customer sites, H may be at any preferred height, as defined in IEC Publication 917-2 (see Annex B), up to 2 200 mm. Provision shall be made for the possible fitment of height adaptors (for interfacing with overhead structures) as illustrated in Annex A, figure A.1. The racks/cabinets shall also be provided with devices which can be height-adjusted to compensate for any unevenness in the floor. The scope for height adjustment shall be at least 25 mm. The nominal rack/cabinet height shall be measured when the adjustment devices are at their fully retracted positions. 3.2 Width The width dimension (W) includes covers if they are an integral part of the rack/cabinet. W shall be one of four permitted dimensions: 150 mm, 300 mm, 600 mm, or 900 mm. The sides of any rack/cabinet shall not interfere with the assembly of adjacent racks/cabinets (into a straight line-up). The suppliers must ensure that the rack/cabinet will fit into the space between the grid lines, as illustrated in Annex A, figure A.3. Manufacturing tolerances shall therefore be so arranged that this objective will always be achieved, even when racks/cabinets are delivered from different suppliers. NOTE: If additional equipment at the end(s) of a suite of racks/cabinets is required, the associated coordination dimensions shall be specified as an integer multiple of the mounting pitch of 25 mm for each side during equipment practice design and should be agreed between supplier and user. 3.3 Depth The depth dimension (D) includes: a) doors or covers of the rack/cabinet if present; b) all protruding parts e.g. switches, lamps, hinges, locks, electrostatic discharge points, etc.; c) connectors, cabling, cooling fins, etc. For the doors or covers, a minimum reference value for aisle width shall be 750 mm. Doors or covers which are in the open position shall protrude from the front/rear line of racks/cabinets by a maximum of 150 mm. Doors or covers shall be designed so that when open, they do not in any way restrict access to the equipment for essential maintenance and installation operations. D shall be 300 mm or 600 mm. -----Original Message----- From: Dwight Hunnicutt [mailto:dwight.hunnic...@vina-tech.com] Sent: 01 July 1999 21:46 To: EMC PSTC; TREG Newsgroup Subject: 21" rack for Europe In the U.S., 19" and 23" racks are pretty much the standard (and don't forget the Bellcore hole spacing), yes? How about in Europe? I've heard they use 19" and 21" racks (or their metric equivalent). Is one size typical for data applications, and the other typical to telecom applications? How about hole spacing? -- ___________________________ DWIGHT HUNNICUTT Sr. Compliance Engineer VINA Technologies, Inc. 510-771-3349 520-244-2721 fax www.vina-tech.com --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: "unsubscribe emc-pstc" (without the quotes). 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