1、 TIA DOCUMENT FOTP-172 Flame Resistance of Firewall Connector TIA-455-172 ANSI APPROVAL WITHDRAWN MARCH, 2004 APRIL 1986 TELECOMMUNICATIONS INDUSTRY ASSOCIATION The Telecommunications Industry Association represents the communications sector of NOTICE TIA Engineering Standards and Publications are d
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7、-1779, formulated under the cognizance of the TIA FO-4 Committee on Fiber Optics.) Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION 2004 Standards & Technology Department 2500 Wilson Boulevard Arlington, VA 22201 U.S.A. PRICE: Please refer to current Catalog of TIA TELECOMMUNICATIONS INDUSTRY AS
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20、ment is copyrighted by the TIA and may not be reproduced without prior permission of the Telecommunications Industry Association. For information consult our website at http:/www.tiaonline.org/about/faqDetail.cfm?id=18 Organizations may obtain permission to reproduce a limited number of copies throu
21、gh entering into a license agreement. For information, contact: Global Engineering Documents 15 Inverness Way East Englewood, CO 80112-5704 U.S.A. or call U.S.A. and Canada 1-800-854-7179, International (303) 397-7956 EIA- 4 5 5-1 72 Page 1 FOTP-172 FLAME RESISTANCE OF FIREWALL CONNECTOR (From EIA S
22、tandards Proposal 1779, formulated under the cognizance of the EIA FO-6.3 Subcommittee on Interconnection Devices and the FO-6.4 Subcommittee on Test Methods and Instrumentation.) This FOTP forms a part of the latest revision of EIA Recommended Standard EIA-455. 1.0 INTENT This procedure provides fo
23、r a test to determine the ability of a cabled and mated connector (plug and receptacle) to resist firewall environments, such as flame or ignition of gases. Optical operation is required for 5 minutes and physical integrity for 20 minutes. 2.0 TEST EQUIPMENT Test equipment shall be as follows: 2.1 G
24、lass Tape 2.2 Flame producing apparatus capable of producing a natural gas flame at a flow rate equivalent to an input of 9,300 to 10,400 joules/se,cond aBd Baintaining a flame at a temperature of 1,093 C + 30 -00 . 2.3 Thermocouple capable of measuring flame temperature. 2.4 Chamber shall be capabl
25、e of exhausting gases from burning process without causing horizontal air currents which prevent a steady even flame but still permit free circulation of convection air currents.* * Chamber described in FED-STD-191, Method 5903 has been found to be sui table. COPYRIGHT Electronic Industries Alliance
26、Licensed by Information Handling Services STD-EIA TIA-455-172-ENGL 178b 3234bOD OhLLi517 07b D EIA-455-172 Page 2 2.5 Vibration apparatus capable of vibrating the mated connector continuously at 33 Hz with a total excursion of 6.35 mm (0.25 inch) as required by FOTP-11 (EIA-455-llA), “Vibration Test
27、 Procedure for Fiber Optic Connecting Devices and Cables.“* 2.6 Optical source and detector capable of measuring optical power and detecting discontinuities of one microsecond or greater in accordance with FOTP-32 (EIA-455-32), “Fiber Optic Circuit Discontinuities.“ 3.0 TEST SAMPLE 3.1 Sample The te
28、st sample shall consist of a mated connector pair that is terminated,with cables on both sides. 3.2 Sample Preparation The sample shall be prepared as follows: 3.2.1 Clean sample of oil, grease, dirt and foreign material using a non-combustible solvent. 3.2.2 Wrap the cables connected to the plug wi
29、th glass tape or protect by suitable means to ensure that the bundle is capable of meeting the requirements of this test. 3.2.3 Provision shall be made for continuous optical transmittance measurement in accordance with FOTP-20 (EIA-455-20), “Measurement of Change in Optical Transmittance,“ as requi
30、red for 5 minutes of flame exposure. Physical assessment shall be made following completion of the 20-minute exposure. 4.0 TEST PROCEDURE 4.1 Mounting Unless otherwise specified, the mated connector pair shall be mounted on a fixture in accordance with Figures I, 2, and 3. - *This FOTP will be publi
31、shed as a future addendum to EIA-455. COPYRIGHT Electronic Industries AllianceLicensed by Information Handling Services STD.EIA TIA-455-L72-ENGL L78b 3234b00 ObLi.1520 808 m E IA-4 55-1 72 Page 3 4.2 4.3 4.4 4.5 Gas Flow The flame shall be natural gas at a flow rate equivalent to an input of 9,300 t
32、o 10,400 joules/second during the entire test. Ex pos ur e The connector assembly shall be exposed to a 1,093OC minimum flame (measured 6.35 mm I0.25 inch from the assembly as shown in Figure 1) for a period of 20 minutes. Unless otherwise specified, the assembly shall be simultaneously vibrated con
33、tinuously at 33 Hz and with a total excursion of 6.35 mm (0.25 inch) in accordance with FOTP-11. Opt i c a 1 Re qui r eme n t s During the first 5 minutes of the test, unless otherwise specified, all circuits shall carry the optical signal without break in continuity and without increase in optical
34、losses in excess of those specified in paragraph 6.3. Visual inspection Following the flame exposure the connectors shall be visually inspected as required by FOTP-13 (EIA-455-131, “Visual and Mechanical Inspection of Fibers, Cables, Connectors and/or Other Fiber Optic Devices,“ to determine if form
35、 and fit have been affected and if paragraph 6.4 requirements have been met. 5.0 DOCUMENTATION Data sheets shall contain: 5.1 Title of test, date, and name of operator. 5.2 Sample description - include fixture, if applicable. 5.3 Test equipment used and date of latest calibration. 5.4 Values and obs
36、ervations. COPYRIGHT Electronic Industries AllianceLicensed by Information Handling ServicesEIA 455-172 Page 4 6.0 SUMMARY The following details shall be specified in the Detail Specification: 6.1 Special mounting, if applicable (see paragraph 4.1). 6.2 Vibration frequency, if other than 33 Hz (see
37、paragraph 4.3). 6.3 Optical loss increase acceptable, if required. 6.4 Physical degradation acceptable after 20 minutes of exposure (see paragraph 4.5) . COPYRIGHT Electronic Industries AllianceLicensed by Information Handling Servicesa TORCH EIA 455-172 Page 5 BEAD CABLES CABLE CLAMP RECEPTACLE FOR
38、 DETAILS OF FIREWALL FIXTURE SEE FIGURES 2 AND 3 VIBRATION DIRECTION 1 QP430016-112 Note Dimensions in millimeters FIGURE 1. FIREWALL TEST SETUP COPYRIGHT Electronic Industries AllianceLicensed by Information Handling ServicesSTD-EIA TIA-455-172-ENGL 198h = 323Lih00 Oh14523 517 H EIA-4 55-1 72 Page
39、6 CONNECTOR MOUNTING PLATE I (1.59 THICK) 7 . CONNECTOR MOUNTING HOLES AS SPECIFIED ON APPLICABLE STAN DARD EL 25.40 DETAIL A 254.00 1 SOCKET REF SHEET ASBESTOS (6.35 THICK) OR EOUIVALENT 0 AIL A mm 254 x 254x 12.70 MILD STEEL IN. NA0069-05032 HD CAP SCREW 0.125 3.18 0.190 4.83 0.250 6.35 0.500 12.7
40、0 1.000 25.40 1.250 31.75 7.000 177.80 8.200 288.28 10.000 254.00 11 .O00 279.40 DETAIL B Note Dimensions are in millimeters OP43M)16-113 FIGURE 2. FIREWALL FIXTURE ASSEMBLY (TYPICAL) COPYRIGHT Electronic Industries AllianceLicensed by Information Handling Services6.35 EIA 455-172 Page 7 SHEET ASBES
41、TOS OR EQUIVALENT7 1-254.0-1 I t 5.28 Diad 12.7 5.13 (17 REQUIRED) (SEE HOLE PATTERN) SHEET ASBESTOS 254 x 254 x MILD STEEL 5.13 REQUIRED) REQUIRED) (SEE NOTE 2) B (4 REQUIRED) (SEE NOTE 3) CONNECTOR MOUNTING PUTE 1.57 254x177 8x12 7 MILD STEEL 12 7 254 O SUPPORT PLATE HOLE PATTERN Notes: 1. Dimensi
42、ons are in millimeters. Unless otherwise specified, dimensions symmetrical about centerline. 2. A hole shall provide suitable clearance for the applicable connector. 3. B connector mounting holes shall be as specified on the applicable standard. P430016-Il4 FIGURE 3. FIREWALL FIXTURE DETAILS (TYPICAL) COPYRIGHT Electronic Industries AllianceLicensed by Information Handling Services
