BS EN 4708-102:2018 pdf download.Aerospace series – Sleeving, heat-shrinkable, for binding, insulation and identification Part 102: Very flexible polymer – Operating temperature – 75 °C to 150 °C – Product standard.
1 Scope This European Standard specifies the required characteristics for a heat-shrinkable, very flexible polymer sleeving for use in aircraft electrical systems at operating temperatures between ‒ 75 °C to 150 °C. This sleeving has very good flexibility, is flame retarded and has a thick wall for mechanical protection. It is suitable for use as cable protection in areas where wiring is subject to contamination by aircraft fuels and hydraulic fluids. These sleevings are normally supplied with internal diameters up to 102 mm for shrink ratios of 2:1. They are available in black only. Sizes other than those specifically listed in this standard may be available. These items shall be considered to comply with this standard if they comply with the property requirements listed in Tables 2, 3 and 4 except for dimensions and mass. 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 3909, Aerospace series — Test fluids and test methods for electrical and optical components and sub-assemblies EN 4708-001, Aerospace series — Sleeving, heat-shrinkable, for binding, insulation and identification — Part 001: Technical specification EN ISO 846, Plastics — Evaluation of the action of microorganisms (ISO 846) IEC 60684-1, Flexible insulating sleeving — Part 1: Definitions and general requirements 1) IEC 60684-2, Flexible insulating sleeving — Part 2: Methods of test 1) IEC 60757, Code for designation of colours 1) 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60684-1 apply. 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/obp
The breakdown voltage shall be determined by any of the methods described in 21.2, 21.3 or 21.4 of IEC 60684-2. The central value shall comply with the minimum value in Table 3. The rate of application of the voltage shall be 500 V/s.BS EN 4708-102 pdf download.