IEC 60297 PDF


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IEC Dimensions of Mechanical Structures of the mm (19 in) Series Part 1: Panels and Racks. IEC Mechanical structures for electronic equipment – Dimensions of mechanical structures of the ,6 mm (19 in) series – Part Basic. IEC Dimensions of Mechanical Structures of the mm (19 Inch) Series Part 2: Cabinets and Pitches of Rack Structures.

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Installation and removal of hardware in a square hole rack is very easy and boltless, where the weight of the equipment and small retention clips are all that is necessary to hold the equipment in place. Low-wattage devices may not employ active cooling, but use only passive thermal radiation and convection to dissipate heat.

The hole pattern thus repeats every 1. See also Industrial PC. In other projects Wikimedia Commons. APC SX-range racksit is common for equipment that features 4-post mounting brackets to have an adjustable rear bracket.

Non-isolated cases simply mount inch mounting rails inside the case. Tapping large numbers of holes that may never be used is expensive; nonetheless tapped-hole racks are still in use, generally for hardware that rarely changes. The height of the different panels will vary, Equipment can be mounted either close to its center of gravity to minimize load on its front panelor via the equipment’s front panel holes.

A inch rack is a standardized frame or enclosure for mounting multiple electronic equipment modules. A blade server enclosure might require 10U. A series of studies led to the adoption of frames 7 feet 2. The distance of the right edge of the right mounting rail to the left edge of the left mounting rail is millimetres Slides or rails for computers and other data processing equipment such as disk arrays or routers often need to be purchased directly from the equipment manufacturer, as there is no standardization on such equipment’s thickness measurement from the side of the rack to the equipment or means for mounting to the rail.

To protect equipment from shock and vibration road rack cases use an inner and outer case. This gap allows a bit of room above and below an installed piece of equipment so it may be removed without binding on the adjacent equipment. The inch rack format has remained constant while the technology that is mounted within it has changed considerably and the set of fields to which racks are applied has greatly expanded.

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List of International Electrotechnical Commission standards. The height of the electronic modules is also standardized as multiples of 1.

By using this site, you agree to the Terms of Use and Privacy Policy. When in place, the equipment may also then be bolted to the rack. Once serial production started, they were built into custom-made racks, one per repeater.

Touring musicians, ie productions and sound and light companies use road case racks. Physical Protection, are available, [10] with Zone 4 representing the most demanding environment. The shape of small cases is maintained by the rack rails and the cover seal extrusions alone. Road case racks come in different heights based on the 1U standard and different depths.

19-inch rack

The extra width and depth enables cabling to be routed with ease also helping to maintain bend-radius for fibre and copper cables and deeper equipment to be utilised. Bell Labs Technical Journal. Occasionally, one may see fractional U devices such as a 1.

For example, an oscilloscope might be 4U high, and rack-mountable computers are mostly between 1U and 4U high. Archived from the original on Larger cases typically have wheels for easy transport. Production of clearance-hole racks is less expensive ice tapping the holes is eliminated and replaced with fewer, less expensive, cage nuts.

inch rack – Wikipedia

A standard inch server rack cabinet is typically 42u in height, 19 inches There are a multitude of specialty server racks including soundproof server racks, air conditioned server racks, NEMA rated, seismic rated, open frame, narrow, and even miniature inch racks for smaller applications. This page was last edited on 12 Decemberat The inch rack format with rack-units of 1.

The polyethylene shell is not fiberglass reinforced and is not rigid. Irc rack rails are too thin to tap, rivnuts or other threaded inserts can be used, and when the particular class of equipment to be mounted is known in advance, some of the holes can be omitted from the mounting rails. With the prevalence of inch racks in the Telecoms industry, the same practice is also common, but 62097 equipment having inch and inch brackets available, enabling them to be mounted in existing racks.

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The posts are each 0. In contrast to the “inch world”, ETSI also defined the size of the rack enclosure: The posts have holes in them at regular intervals, with both posts matching, so that each hole is part of a horizontal pair with a center-to-center distance of A difficulty ieec forced air fan cooling in rack equipment is that fans can fail due to age or dust.

Four-post racks allow for mounting rails to support the equipment at the front and rear. Heavy equipment or equipment which is commonly accessed for servicing, for which attaching or detaching at all four corners simultaneously would pose a problem, is often not mounted directly onto the rack but instead is mounted via rails or slides.

The strength required of the mounting posts means they are invariably not merely flat strips but actually a wider folded strip arranged around the corner of the rack.

The term relay rack appears on page at the bottom of column 1. The First Stored Program Computer. Nineteen-inch racks are also often used to house professional audio and video equipment, including amplifierseffects unitsinterfaces, headphone amplifiers, and even small scale audio mixers. This of course varies by manufacturer, the design of the rack and its purpose, but through common constraining factors such as raised floor tile dimensionsthese dimensions have become quite common.

A key structural weakness of front-mounted support is the shear stress placed on the mounting rails and the leading edge of the equipment.