BS EN 3475-807-2002 PDF

Full title and description

STB BS EN 3475-807:2002 — Aerospace series — Cables, electrical, aircraft use — Test methods — Part 807: Transfer impedance. This is the 2002 edition of the European technical specification that defines laboratory methods for measuring the transfer impedance (shielding coupling resistance) of electrical cables intended for aircraft and aerospace applications; it is intended to be used together with EN 3475-100 (General test-method requirements).

Abstract

This standard specifies specimen preparation, measurement procedures and reporting requirements for determining the transfer impedance of aerospace electrical cables. The measured transfer impedance values are intended to support EMC qualification, product development and procurement decisions; limits or acceptability criteria are set in the applicable cable product standard rather than in this test-method document.

General information

• Status: Superseded / withdrawn at national level and replaced by a later edition (EN 3475-807:2025 / national adoptions published 2025–2026). Users should apply the 2025/2026 revision for current testing requirements.
• Publication date: 2002 (published nationally as BS EN 3475-807:2002 — June 2002 / 25 June 2002 is commonly cited for the BSI listing).
• Publisher: Originally published as a European Standard by CEN; national editions published by BSI (United Kingdom) and other CEN members / national bodies.
• ICS / categories: 49.060 — Electrical engineering in aerospace (cables and wiring systems).
• Edition / version: 1st edition (2002). Note: a revised EN 3475-807 text was developed and issued as the 2025 (and national 2025/2026) revision.
• Number of pages: Typically listed as 7–8 pages for the 2002 edition (national publications vary slightly by cover/foreword).

Scope

Defines laboratory methods to measure the transfer impedance (also described as coupling resistance or shielding transfer impedance) of electrical cables intended for aircraft use. The specification covers specimen preparation, selected measurement techniques and reporting conventions; it is not a product performance specification (limit values are given in the relevant cable product standards). The standard is designed to be used together with EN 3475-100 (general test-method requirements) and references appropriate triaxial measurement techniques (for example IEC triaxial methods).

Key topics and requirements

• Definition of transfer impedance and purpose of the measurement (EMC/shield performance evaluation).
• Normative references and requirement to use EN 3475-100 for general test-method rules.
• Specimen preparation: stripping, termination and fixture practices required for reproducible results.
• Measurement methods: triaxial/test-fixture methods derived from established IEC techniques (selection of method and exact test configuration must be reported).
• Reporting: how to present measured transfer impedance values, the test method used and conditions so results are traceable and comparable.
• Intended use: EMC qualification, cable development and verification against product-standard thresholds (the test method does not prescribe pass/fail limits).

Typical use and users

Applied by aerospace cable manufacturers, independent test laboratories, EMC engineers, avionics suppliers and procurement/certification organizations to quantify cable shield performance and support product qualification, design verification and supplier acceptance testing. Test labs use the method to produce comparable data for procurement or compliance activities.

Related standards

Key related documents include EN 3475-100 (Test methods — Part 100: General), other parts of the EN 3475 aerospace-cables series, and IEC/other international test-method standards for transfer impedance/triaxial measurement (for example IEC 62153-4-3 referenced by later revisions). Users should consult the current EN 3475-807 revision and EN 3475-100 for normative cross-references.

Keywords

transfer impedance, coupling resistance, cable shielding, aerospace cables, aircraft wiring, EMC test methods, triaxial measurement, EN 3475 series, EN 3475-100, IEC 62153-4-3.

FAQ

Q: What is this standard?

A: EN 3475-807:2002 (published nationally as BS EN 3475-807:2002) is a test-method standard that specifies how to measure the transfer impedance of electrical cables for aircraft and aerospace use. It provides specimen preparation, measurement procedures and reporting rules; it is intended to be used together with EN 3475-100.

Q: What does it cover?

A: It covers laboratory methods for measuring the transfer impedance (shielding effectiveness related parameter) of cables, including preparation of cable specimens, recommended measurement techniques (triaxial/test-fixture methods), and reporting requirements. It does not set product pass/fail limits — those are defined in the relevant cable product standard.

Q: Who typically uses it?

A: Aerospace cable manufacturers, EMC test laboratories, avionics and systems integrators, procurement teams and certification bodies use the method to characterise cable shielding and support EMC qualification and supplier acceptance.

Q: Is it current or superseded?

A: The 2002 edition has been superseded by a later revision published in 2025 (EN 3475-807:2025) and national adoptions appearing in 2025–2026; users are advised to apply the latest revision for current testing requirements. National catalogues and standards bodies list the 2002 text as superseded/withdrawn where the 2025 revision has been adopted.

Q: Is it part of a series?

A: Yes — it is Part 807 of the EN 3475 aerospace-series for electrical cables and wiring systems; the series contains many parts that specify different tests and product requirements. EN 3475-100 (Part 100) contains the general test-method rules referenced by Part 807.

Q: What are the key keywords?

A: Transfer impedance, coupling resistance, cable shielding, aerospace cables, EMC, triaxial measurement, specimen preparation, EN 3475-100, IEC 62153-4-3.