oSIST prEN 2591-217:2026

• Abstract:

  This document specifies a method for measuring the voltage drop under specified current in terminal lugs and in-line splices.; It is used together with EN 2591-100.

• Status: Not Published
• Public Enquiry End Date: 04-Mar-2026
• ICS: 49.060 - Aerospace electric equipment and systems
• ICS: 49.090 - On-board equipment and instruments
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 16-Jan-2026
• Due Date: 05-Jun-2026
• Completion Date: 05-Mar-2026
• Ref Project: FprEN 2591-217 - Aerospace series - Elements of electrical and optical connection - Test methods - Part 217: Voltage drop under specified current for terminal lugs and in-line splices

• Revises: SIST EN 2591-217:2004 - Aerospace series - Elements of electrical and optical connection - Test methods - Part 217: Voltage drop under specified current for terminal lugs and in-line splices
• Effective Date: 19-Jan-2023

Overview

oSIST prEN 2591-217:2026 is a European draft standard developed by CEN for the aerospace industry. Titled "Aerospace series - Elements of electrical and optical connection - Test methods - Part 217: Voltage drop under specified current for terminal lugs and in-line splices," this standard outlines a precise method to measure voltage drop across terminal lugs and in-line splices under defined current conditions. The goal is to verify electrical performance and safety in critical aerospace applications by providing a common, repeatable test methodology for manufacturers and testers.

This document is intended for use with EN 2591-100, which contains the general requirements for test methods covering electrical and optical connection elements in aerospace systems.

Key Topics

• Purpose: Defines a test method to measure voltage drop in terminal lugs and in-line splices under a set current, ensuring that connection components meet specified electrical requirements.
• Preparation: Details how to prepare specimens with normal accessories, using standard installation and wiring techniques. The test specification should describe the sample size, cable type, test current, and measurement length.
• Measurement Method:
  • Voltage drop is evaluated by measuring the difference between the specimen and a reference cable.
  • Calculations are adjusted if measurements are not taken at the specified reference length.
  • For temperature variations, the standard provides a formula to normalize voltage drop at 20°C.
• Limits and Compliance: The voltage drop values measured must not exceed the maximum values outlined in the applicable technical specification.
• Updates: This draft introduces formulas for temperature normalization and corrects measurement point locations, improving clarity and accuracy over previous editions.

Applications

oSIST prEN 2591-217:2026 is vital in the following contexts:

• Aerospace Manufacturing: Ensures electrical connection quality in aircraft, satellites, and aerospace vehicles by testing terminal lugs and in-line splices for compliance with voltage drop requirements.
• Component Qualification: Manufacturers use this test method to qualify connectors and splices for use in safety-critical power and signal circuits, confirming consistent low-resistance performance under operational loads.
• Quality Assurance and Maintenance: Enables standardized verification in maintenance checks and during production quality control, helping detect defective or poorly installed components that could lead to electrical failures.
• Regulatory Compliance: Supports adherence to industry and contractual requirements for safety, reliability, and performance of aerospace electrical systems.

The test method promotes reliability and interoperability in aerospace wiring, which is especially important where electrical continuity and minimal losses are essential.

Related Standards

• EN 2591-100: Aerospace series - Elements of electrical and optical connection - Test methods - Part 100: General. This core document provides foundational test method information and must be used in conjunction with EN 2591-217.
• Other Parts of EN 2591 Series: This series includes specialized test methods for connectors, cables, and splices addressing various mechanical, environmental, and electrical stresses.
• ISO and IEC Terminology Databases: For standardized definitions, users are referred to ISO's Online Browsing Platform and IEC Electropedia.

The adoption of oSIST prEN 2591-217:2026 improves test consistency across the aerospace sector, ensuring that electrical and optical connections are tested to rigorous, harmonized standards. This contributes to enhanced safety, product quality, and operational reliability in aerospace engineering and maintenance.

SLOVENSKI STANDARD
01-marec-2026
Aeronavtika - Električni in optični spojni elementi - Preskusne metode - 217. del:
Padec napetosti pri določenem toku za kabelske čevlje in vrstne spojke
Aerospace series - Elements of electrical and optical connection - Test methods - Part
217: Voltage drop under specified current for terminal lugs and in-line splices
Luft- und Raumfahrt - Elektrische und optische Verbindungselemente; Prüfverfahren -
Teil 217: Spannungsabfall bei festgelegtem Strom für Kabelschuhe und Stoßverbinder
Ta slovenski standard je istoveten z: prEN 2591-217
ICS:
49.060 Letalska in vesoljska Aerospace electric
električna oprema in sistemi equipment and systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
prEN 2591-217
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2025
ICS 49.060 Will supersede EN 2591-217:2002
English Version
Aerospace series - Elements of electrical and optical
connection - Test methods - Part 217: Voltage drop under
specified current for terminal lugs and in-line splices
Luft- und Raumfahrt - Elektrische und optische
Verbindungselemente; Prüfverfahren - Teil 217:
Spannungsabfall bei festgelegtem Strom für
Kabelschuhe und Stoßverbinder
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee ASD-
STAN.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 2591-217:2025 E
worldwide for CEN national Members.

prEN 2591-217:2025 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Preparation of specimens . 4
5 Method .
...