1、AECMA STANDARD prEN 3475-51 3 NORME AECMA Edition P 1 AECMA NORM August 2001 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES - STANDARDIZATION (AECMA-STAN) Gulledelle 94 - 8-1200 BRUXELLES - Tel. (+32) 2 775 81 10 - Fax. (+32) 2 775 81 11 ICs: 49.060 Descriptors: ENGLISH VERSION Aerosp
2、ace series Cables, electrical, aircraft use Test methods Part 51 3: Deformation resistance (Installation with plastic cable ties) Srie arospatiale Luft- und Raumfahrt Mthodes dessais Prfverfahren Cbles lectriques usage aronautique Partie 513 : Dformation mcanique (Installation avec collier de fretta
3、ge) Elektrischen Leitungen fr Luftfahrt Verwendung Teil 513: Verformungcbestandigkeit This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA-STAN (The European Association of Aerospace Industries - Standardization). It is published on green paper for the needs of the
4、 European Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally,
5、 without re-identification of the standard. After examination and review by users and formal agreement of AECMA-STAN it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 1
6、99, rue Jean-Jacques Rousseau - 92138 ISSY-LEC-MOULINEAUX CEDEX I 1 Edition approved for publication I Comments should be sent within six months after the date of publication to 2001-08-31 AECMA-STAN 8-1200 BRUXELLES Gulledelle 94 Electrical Domain Mr Peuetta Page 2 prEN 3475-51 3: 2001 Blank page P
7、age 3 prEN 3475-51 3: 2001 Scope This product standard defines a test method to evaluate the performance of a coaxial cable after the installation of plastic cable ties. It shall be used together with EN 3475-1 OO. 2 Normative references This European Standard incorporates by dated or undated refere
8、nce, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporat
9、ed in it by amendment or revision. For undated references the latest edition of the publication referred to applied. EN 3475-100 Aerospace series - Cables, electrical, aircraft use - Test methods - Part 100: General 1) EN 3475-805 Aerospace series - Cables, electrical, aircraft use - Test methods -
10、Part 805: Characteristic impedance 1) EN 4056-003 Aerospace series - Cable ties for harnesses - Part 003: Plastic cable ties - Type 1 operating temperatures - 65 “C to f 105 OC, Type 2 operating temperatures - 65 “C to + 150 “C - Product standard 2) 3 Preparation of specimens 3.1 Required parts / sa
11、mples 12 plastic cable ties, type EN 4056-003 Type 1, size code S Test is to perform on four specimens made up of two cable pieces. 3.2 Conditioning Cut eight pieces of the test cable to a length of (500 f 20) mm. Use three plastic cable ties per specimen to bundle two cable pieces. Place the first
12、cable tie approximately 100 mm from the end which was connected to the TDR (to measure the initial impedance). Place the second cable tie at a distance of (I00 f 5) mm to the first, the third cable tie in a distance of 100 mm to the second. Use the application tool to fix all cable ties, the force w
13、hich has to be applied will be defined in the product standard. 3.3 Measure the impedance of each specimen (on both pieces of cable) in accordance with EN 3475-805, method B, plot the results. In it i a I meas u remen t 1) Published as AECMA Prestandard at the date of publication of this standard 2)
14、 In preparation at the date of publication of this standard Page 4 prEN 3475-513: 2001 4 Test method 4. I 4.2 First test To be performed on two specimens Measure the impedance of each cable again in accordance with EN 3475-805, method BI plot the results. Compare the impedance before and after the c
15、able ties have been applied to cable bundle. Specimens shall be prepared as defined in 3.2. 4.3 Second test To be performed on two specimens. Store the cable bundle for eight hours in an air convection oven at a temperature of (130 15) OC. Cool the cable bundle for four hours to six hours to room te
16、mperature. Measure the impedance of each cable again in accordance with EN 3475-805, method BI plot the results. Compare the impedance before and after the cable ties have been applied to cable bundle. 5 The impedance shall not deviate more than five per cent from the originally recorded values. Req u i rem en t
