1、 AMERICAN NATIONAL STANDARD FOR TELECOMMUNICATIONS ATIS-0600336.2015 Design Requirements for Universal Cabinets and Framework As a leading technology and solutions development organization, the Alliance for Telecommunications Industry Solutions (ATIS) brings together the top global ICT companies to
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4、ted by the American National Standards Institute (ANSI). The organization is the North American Organizational Partner for the 3rd Generation Partnership Project (3GPP), a founding Partner of the oneM2M global initiative, a member of and major U.S. contributor to the International Telecommunication
5、Union (ITU), as well as a member of the Inter-American Telecommunication Commission (CITEL). For more information, visit www.atis.org. AMERICAN NATIONAL STANDARD Approval of an American National Standard requires review by ANSI that the requirements for due process, consensus, and other criteria for
6、 approval have been met by the standards developer. Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agreement has been reached by directly and materially affected interests. Substantial agreement means much more than a simple majority, but not necess
7、arily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made towards their resolution. The use of American National Standards is completely voluntary; their existence does not in any respect preclude anyone, whether he has approved the standard
8、s or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards. The American National Standards Institute does not develop standards and will in no circumstances give an interpretation of any American National Standard. Moreover, no p
9、erson shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National Standards Institute. Requests for interpretations should be addressed to the secretariat or sponsor whose name appears on the title page of this standard. CAUTION
10、NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be taken periodically to reaffirm, revise, or withdraw this standard. Purchasers of American National Standards may receive current informa
11、tion on all standards by calling or writing the American National Standards Institute. Notice of Disclaimer the weight of the UCF, the maximum mounted equipment weight, and 23 kg (50 lbs.) to simulate a cable weight supported by the top of the UCF. It is the responsibility of the integrator (in the
12、case of pre-configured systems) or the service provider (in the case of provisioning unequipped UCF) to confirm equipment weight is within the frameworks maximum rated capacity. 4.2 Static Tests R-4. (Required) Static load tests shall be performed on the UCF assembly by applying a force equal to twi
13、ce the intended maximum rated load (200 kg 441 lbs., 400 kg 882 lbs., 600 kg 1323 lbs., or 800 kg 1764 lbs.). An open UTF shall be tested without equipment, blank panels, and reinforcement plates mounted to upright rails. A closed UTF shall be tested with doors and side panels in place but without e
14、quipment, blank panels, and reinforcement plates mounted to upright rails. R-5. (Required) The UCF shall be secured at the base to a test platform or a floor by using the floor securing detail designed into the UCF base (see Figure 9.5 for location). The actual floor anchors do not need to be used f
15、or securing. However, the same quantities, diameter, and location of the securing fasteners for tests shall be used to secure UCF. R-6. (Required) When the UCF is subjected to a static force equal to two times the rated capacity objective, the allowable deflection shall not exceed 75 mm (2.95 inches
16、) when measured at greatest deflection point. UCF shall recover to within 6 mm (0.24 inches) upon release of load. A horizontal static force shall be applied as close to the top of the UCF as practicable. The static load tests shall be applied twice: once in the front-to-back axis and once in the si
17、de-to-side axis of the UCF. R-7. (Required) For a 2-pole framework, when subjected to a vertical static downward force of 1000 pounds (453.6 kg) loaded at the top of the cross member, bowing at the mid height of the uprights shall not exceed 0.125 inch (3.12 mm) (see Figure 9.1.e). The static load m
18、ay be applied using weights, hydraulic ram, or other measurable load application method to within 5% tolerance. 4.2.1 Test Requirements Each tested frame will be tested in four (4) individual axes, front, back, one side, and vertical. Load will be applied at the frame top crossmember for each test a
19、xes. Test load applied must be at right angles over the crossmember. Frames are loaded by either of two ways: a) Hydraulic Cylinder: A hydraulic cylinder with minimum of 5 inch stroke and pump shall be used to load frame as shown in Figure 9.1.a. Attach one end of the cylinder to a stationary struct
20、ure. The other end of ATIS-0600336.2015 5 the cylinder is attached to the frame. A load cell or tension scale is placed inline at the frame end of the cylinder for measuring load. b) Hanging Weights: Individual cast iron weights with a cable pulley system shall be used to load the frame as shown in
21、Figure 9.1.b. Attach a weight holder to one end of the cable. The other end of the cable is attached to the frame. The cable is passed through a low friction pulley mounted to a stationary structure. The pulley suspends the weights vertically and applies tension to the cable. A load cell or tension
22、scale is placed inline at the frame end of the cable. 4.2.2 Data Requirements The displacement at the top of the frame will be measured and recorded. Displacement transducers can be used to measure the rack movement and plotted. Measurements made with a calibrated rule or gauge within .0625 inch (1.
23、5875 mm) from a stationary point are acceptable if a transducer is not available. The frame shall be measured by the transducer or a rule at the top corner of frame (see Figure 9.2). The frame displacement is the distance the frame corner has moved from the reference start point when a load is appli
24、ed. Test loads will be measured and recorded. The range of measuring instrument required will be 0 to 1200 lbs (0 to 544 kg). A load cell strain gauge may be used to record the loads. A simple tension scale with accuracy of 2.5 lbs. ( 1.13 kg) may be used if load cell is not available. For vertical
25、loads, the deflection between uprights shall be measured and recorded. The readings shall be taken at mid-height of uprights (see Figure 9.1.e) with displacement transducer or calipers. 4.2.3 Test Procedure All tests shall be conducted on equipment frames in accordance to procedures described. (a) L
26、ateral Loads: (1) The frame shall be mounted to the test floor in a free standing configuration. Through-bolts, welded studs, or other positive anchorages may be used to ensure no anchor creep or pullout occurs. No more than four (4) and no larger than 12 mm (1/2 inch) diameter anchor bolts shall be
27、 used to anchor frames for test. (2) Attach the load cable or cylinder to the top cross member of the frame. Locate a load cell or tension scale in line with the cable or cylinder. Complete attachment of the cable through pulleys and attach a weight holder or attach the other end of the cylinder to
28、a stationary structure. (3) Take the initial readings of frame position. (4) Apply load to the frame and record the load at each 0.25 inch (6.35 mm) frame movement. Continue to increase load up to specified value defined below or until 2.0 inches (50.8 mm) displacement is reached. i. Horizontal fron
29、t and back axis horizontal lateral load of 700lbs (317.8 kg) ii. Side axis - horizontal lateral load of 600lbs (272.4 kg). NOTE: Loading the frame beyond 2.0 inch (50.8 mm) deflection may result in permanent deformation of the frame. (5) Record any observations of upright bowing, stress damage, or b
30、ase lifting. Videos, photographs, or other evidence of frame condition is required of loaded and unloaded frame. (6) Repeat steps 1 through 4 for each of the axes (front, back, one side). (b) Vertical Loads: (1) Mount the frame to the floor as described in Section 4.2.3. (a) 1. Vertical loads can be
31、 applied by hydraulic cylinder attached to top cross member and on other end to the floor. Another method is to stack individual cast iron weights above cross member or hang weights from cross member. ATIS-0600336.2015 6 (2) Measure and record the distance between uprights before the load is applied
32、 to the frame. (3) Apply load to top cross member gradually until the 1000 lbs. (453.6 kg) is reached. (4) Measure the deflection distance between the uprights and record. (5) Remove the load and measure and record the distance between the uprights. 4.2.4 Test Results The test results are to be subm
33、itted for each frame. The results must include manufacturer name, frame model number, tabulated data of tests, videos or photographs of frame, and assembly drawings of frame, baseplate, and anchor hardware. Figures depicted are typical framework and may include other styles of framework. R-8. (Requi
34、red) Documented test results shall be required and shall include photographs, measured data, and a description of results. Documented test results shall be kept on file and available when requested by the user. 4.3 Dynamic Tests O-1. (Optional) Framework manufacturers should test unequipped framewor
35、ks to the maximum rated load (200 kg 441 lbs., 400 kg 882 lbs., 600 kg 1323 lbs., or 800 kg 1764 lbs.) as required by the user. Tests shall be completed per 2 ATIS-0600329, Category F. Closed UCF shall be tested with doors and side panels in place. Actual equipment or simulated equipment shall be mo
36、unted as they are normally distributed in the UCF. The UCF should be rigidly secured at the base to the test platform or floor using normal floor securing detail designed into the UCF base. Actual floor anchors do not need to be used for securing. However, the same quantities, diameter, and location
37、 of the securing fasteners for tests shall be used to secure the user UCF. Documented test results should be kept on file and available when requested by the user. 5 Physical Requirements 5.1 General Requirements The following criteria apply to open two-post and open four-post equipment frames, and
38、cabinets, distribution, and interconnecting frames and DC power plant equipment. R-9. (Required) The UCF shall be constructed to meet stated performance requirements. O-2. (Optional) The UCF design may be two-post, four-post, or any other design conforming to dimensional and performance requirements
39、 in this document. R-10. (Required) All UCF designs shall be compatible to allow side by side installations with use of the defined junctioning hardware and dimensional and footprint continuity. R-11. (Required) No part of the UCF including any cabling shall extend horizontally beyond the front or r
40、ear edges of the base. R-12. (Required) To compensate for variations in floor flatness; wedges, shims, or leveling screws shall be available to plumb or level the UCF. R-13. (Required) Design of UCF shall incorporate welded joints in structural members that will not loosen in the field, do not requi
41、re maintenance, and will not affect frame performance over a 20-year period. Bolted frames are not permitted unless the manufacturer demonstrates by testing that joints will not loosen under high vibratory and normal use conditions over a 20-year period. ATIS-0600336.2015 7 R-14. (Required) The UCF
42、shall be designed for freestanding installation while anchored to a rigid surface. This surface shall be either a concrete floor or a raised access floor that meets the seismic requirements for the local area. (See Figure 9.55 for mounting hole locations.) 5.2 Fire Resistance R-15. (Required) Any ma
43、terials used on the unequipped frame shall comply with the applicable requirements of the most current version of 1 ATIS-0600307. 5.3 Finish R-16. (Required) The UCF shall be supplied with a non-reflective finish that will protect the base metal from oxidation, as required to meet the application. B
44、are metal or aluminum frames shall not be acceptable. 5.4 Heat Dissipation R-17. (Required) The open UCF shall provide a free airflow path for the cooling of equipment. The equipment shelves may be cooled by natural convection or fan-forced convection as designed by shelf manufacturers. Most communi
45、cations service providers have a preference for cooling air intake in front and equipment heat exhaust out to the rear or top. R-18. (Required) The enclosed UCF with side panels and doors shall be designed to accommodate the airflow of the equipment shelves. The discharge of heated exhaust air shall
46、 not compromise cooling air being drawn into adjacent equipment. Natural convection or fan-forced convection may be used to cool the equipment shelves. The airflow pattern of UCF shall permit inlet of cooling air from the front and exhaust of heat to the rear or top (see Figure 6A-6B). Airflow patte
47、rn in environments with raised access floor and perforated floor panels, cooling air will be from floor directed upward in front of UCF. An enclosed UCF may be provided with thermal management equipment or fan forced convection to supplement cooling of mounted electronic equipment, when requested by
48、 an integrator. The UCF may be provided with powered fan(s) and vents, grilles, or louvered panels to permit airflow as required by user. R-19. (Required) The external dimensions of the thermal management equipment or fan forced convection when mounted into the UCF shall be in conformance to dimensi
49、onal depth requirements stated in this document. NOTE: A special line-up may be required when the thermal management equipment requires a deeper version of the UCF to comply with the stated limits. The dimensions of UCF used to accommodate deeper equipment should be in increments of 150 mm (5.90 inches) as agreed upon by the UCF integrator and the user. 5.5 Raised Floor System Configurations R-20. (Required) The UCF when mounted on raised floors shall be designed to permit the removal of floor panels in the aisles without disturbing the equipment in the fram
