BS EN 3475-513:2020 pdf free.Aerospace series – Cables, electrical, aircraft use – – Test methods.Deformation resistance (Installation with plastic cable ties)
BS EN 3475-513 This document defines the test methods to evaluate the performance of coaxial, quadrax and databus cables after the installation of plastic cable ties. It shall be used together with EN 3475-100.2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.EN 3475-100, Aerospace series一Cables, electrical, aircraft use一Test methods一Part 100: General EN 3475-805 Aerospace series一Cables, electrical, aircraft use一Test methods一Part 805: Characteristic impedance EN 3475-806, Aerospace series一Cables, electrical, aircraft use – – Test methods一Part 805: Attenuation EN 3475-808, Aerospace series一Cables, electrical, aircraft use一Test methods – Part 808: Cross-talk EN 3475-812, Aerospace series一Cables, electrical, aircraft use一Test methods一Part 812: Return loss (VSWR) EN 4056-003, Aerospace series 一Cable ties for harnesses- Part 003: Plastic cable ties 一Operating temperatures – 65C° to 105 °C and – 65 °C to 150 °C一Product standard 3 Terms and definitions No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses:●IEC Electropedia: available at http://www.electropedia.org/●ISO Online browsing platform: available at http:/ /www.iso.org/ obp4.1.1 Required parts/ samples 12 plastic cable ties, type EN 4056-003 Type 1, size code S or equivalent. Cut 8 (eight) pieces of the test cable to a length of (2 000 t 20) mm. Test is to be performed on 4 (four) specimens made up of 2 [two) cable pieces. 4.1.2 Initial measurement
Measure the impedance of each specimen ([on both pieces of cable) in accordance with EN 3475-805,method B, plot the results.4.1.3 Preparation of samples Use 3 (three) plastic cable ties per specimen to bundle 2 (wo) cable pieces.Place the first cable tie approximately 1 000 mm from the end which was connected to the TDR [to measure the initial impedance).Place the second cable tie at a distance of (100士5) mm to the first, the third cable tie in a distance of 100 mm to the second.The cable tie gun setting must be set and calibrated to a force of 75
N.4.2 Test method 4.2.1 First test To be performed on 2 (wo) out of 4 (four) specimens. Measure the impedance of each cable again in accordance with EN 3475-805, method B, plot the results.Compare the impedance before and after the cable ties have been applied to cable bundle.BS EN 3475-513 pdf download.