Aerospace series - Elements of electrical and optical connection - Test methods - Part 311: Low air pressure

This standard specifies a method of assessing the ability of elements of connection to operate at low air pressure. It shall be used together with EN 2591.

Luft- und Raumfahrt - Elektrische und optische Verbindungselemente - Prüfverfahren - Teil 311: Niedriger Luftdruck

Diese Norm legt ein Verfahren zum Nachweis der Funktionsfähigkeit von Verbindungselementen bei niedrigem Luftdruck fest. Sis ist in Verbindung mit En 2591 anzuwenden. Dieses Verfahren ist Bestandteil der Prüfung EN 2591- 302.

Série aérospatiale - Organes de connexion électrique et optique - Méthodes d'essais - Partie 311: Basse pression atmosphérique

La présente norme spécifie une méthode pour vérifier le comportement des organesde connexion à fonctionner à basse pression atmosphérique. Elle doit être utilisée conjointement avec EN 2591. Cette méthode fait partie de l'essai En 2591-302.

Aerospace series - Elements of electrical and optical connection - Test methods - Part 311: Low air pressure

General Information

Status
Published
Publication Date
21-Oct-1997
Withdrawal Date
29-Apr-1998
ICS
49.060 - Aerospace electric equipment and systems
Technical Committee
ASD-STAN - Aerospace
Drafting Committee
ASD-STAN/D 2 - Electrical
Current Stage
9093 - Decision to confirm - Review Enquiry
Start Date
30-Jun-2017
Completion Date
21-Jan-2026
Ref Project
SIST EN 2591-311:2001 - Aerospace series - Elements of electrical and optical connection - Test methods - Part 311: Low air pressure

Relations

Referred By
EN 3155-056:2006 - Aerospace series - Electrical contacts used in elements of connection - Part 056: Contacts, electrical, male, thermocouple NiCr, type C, crimp, class T - Product standard
Effective Date
28-Jan-2026
Referred By
EN 3660-005:2023 - Aerospace series - Cable outlet accessories for circular and rectangular electrical and optical connectors - Part 005: Cable outlet, style A, 90°, unsealed with clamp strain relief - Product standard
Effective Date
28-Jan-2026
Referred By
EN 3155-076:2012 - Aerospace series - Electrical contacts used in elements of connection - Part 076: Contacts, electrical, male, type A, crimp, class R - Product standard
Effective Date
28-Jan-2026
Referred By
EN 4639-102:2007 - Aerospace series - Connectors, optical, rectangular, modular, multicontact, 1,25 diameter ferrule, with removable alignment sleeve holder - Part 102: Optical contact for cable EN 4641-102 - Operating temperatures between - 55 °C and 100 °C - Product standard
Effective Date
28-Jan-2026
Referred By
EN 3155-075:2022 - Aerospace series - Electrical contacts used in elements of connection - Part 075: Contacts, electrical, quadrax, size 8, female, type E, crimp, class R - Product standard
Effective Date
28-Jan-2026
Referred By
EN 3155-024:2006 - Aerospace series - Electrical contacts used in elements of connection - Part 024: Contacts, electrical, triaxial, size 8, male, type D, crimp, class S - Product standard
Effective Date
28-Jan-2026
Referred By
EN 3155-071:2007 - Aerospace series - Electrical contacts used in elements of connection - Part 071: Contacts, electrical, female, type A, crimp, class S - Product standard
Effective Date
28-Jan-2026
Referred By
EN 3155-026:2019 - Aerospace series - Electrical contacts used in elements of connection - Part 026: Contacts, electrical, male, type A, crimp, class R - Product standard
Effective Date
28-Jan-2026
Referred By
EN 3155-058:2006 - Aerospace series - Electrical contacts used in elements of connection - Part 058: Contacts, electrical, coaxial, size 16, male, type D, solder, class R Product standard
Effective Date
28-Jan-2026
Referred By
EN 3155-070:2019 - Aerospace series - Electrical contacts used in elements of connection - Part 070: Contacts, electrical, male, type A, crimp, class S - Product standard
Effective Date
28-Jan-2026
Referred By
EN 4869-001:2024 - Aerospace series - Expanded beam termini, fibre optic non-physical contact in EN 3645 standard cavities - Part 001: Technical specification
Effective Date
28-Jan-2026
Referred By
EN 3155-027:2019 - Aerospace series - Electrical contacts used in elements of connection - Part 027: Contacts, electrical, female, type A, crimp, class R - Product standard
Effective Date
28-Jan-2026
Referred By
EN 3155-025:2006 - Aerospace series - Electrical contacts used in elements of connection - Part 025: Contacts, electrical, triaxial, size 8, female, type D, crimp, class S - Product standard
Effective Date
28-Jan-2026
Referred By
EN 3155-045:2019 - Aerospace series - Electrical contacts used in elements of connection - Part 045: Contacts, electrical, female, type A, double crimping, class T - Product standard
Effective Date
28-Jan-2026
Referred By
EN 4645-001:2010 - Aerospace series - Connectors, optical, circular, single and multipin, coupled by threaded ring, self-locking 1,25 mm diameter ferrule with removable alignment sleeve holder - Part 001: Technical specification
Effective Date
28-Jan-2026

Overview

EN 2591-311:1997 is part of the aerospace series of test methods published by CEN. It specifies a method for assessing the ability of elements of electrical and optical connection to operate at low air pressure. This part is intended to be used together with EN 2591 (the overarching series reference) and is adopted in national implementations such as SIST EN 2591-311:2001.

The standard focuses on practical evaluation of connector function and behaviour when subjected to reduced atmospheric pressure conditions encountered in aerospace environments. It supports consistent assessment across design, validation, and procurement activities.

Key Topics

  • Scope and purpose: Defines the objective of verifying operation of electrical and optical connection elements under low air pressure.
  • Test method framework: Establishes a standard approach to assess connector performance in reduced-pressure environments (to be applied together with the general EN 2591 provisions).
  • Applicability: Targets elements of connection used in aerospace electrical and optical systems.
  • Conformance and reporting: Emphasises reproducible test procedures and results documentation to support engineering decisions.

Applications

EN 2591-311:1997 is relevant for organizations and professionals involved in aerospace connector design, qualification, and maintenance. Practical applications include:

  • Design verification of electrical and optical connectors for aircraft and spacecraft systems.
  • Qualification testing during component development to demonstrate suitability for low-pressure operation.
  • Supplier and procurement criteria to ensure connector performance and reliability in flight conditions.
  • Support for maintenance, overhaul and system-level troubleshooting where pressure-related behaviour may affect connector operation.

Benefits of applying this standard:

  • Improved consistency in low air pressure testing of connectors.
  • Clear basis for technical acceptance and supplier comparison.
  • Enhanced confidence in connector performance, safety and reliability in aerospace environments.

Related Standards

  • EN 2591 (series) - General provisions and other parts that must be used in conjunction with Part 311.
  • SIST EN 2591-311:2001 - National adoption of EN 2591-311:1997 (Slovenian Institute for Standardization reference).
  • Other parts of the aerospace series covering electrical and optical connection test methods.

For implementation, use EN 2591-311 together with the general EN 2591 guidance to ensure complete and consistent evaluation of electrical and optical connection elements under low air pressure.

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Frequently Asked Questions

EN 2591-311:1997 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Elements of electrical and optical connection - Test methods - Part 311: Low air pressure". This standard covers: This standard specifies a method of assessing the ability of elements of connection to operate at low air pressure. It shall be used together with EN 2591.

This standard specifies a method of assessing the ability of elements of connection to operate at low air pressure. It shall be used together with EN 2591.

EN 2591-311:1997 is classified under the following ICS (International Classification for Standards) categories: 49.060 - Aerospace electric equipment and systems. The ICS classification helps identify the subject area and facilitates finding related standards.

EN 2591-311:1997 has the following relationships with other standards: It is inter standard links to EN 3155-056:2006, EN 3660-005:2023, EN 3155-076:2012, EN 4639-102:2007, EN 3155-075:2022, EN 3155-024:2006, EN 3155-071:2007, EN 3155-026:2019, EN 3155-058:2006, EN 3155-070:2019, EN 4869-001:2024, EN 3155-027:2019, EN 3155-025:2006, EN 3155-045:2019, EN 4645-001:2010. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

EN 2591-311:1997 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Elements of electrical and optical connection - Test methods - Part 311: Low air pressureLuft- und Raumfahrt - Elektrische und optische Verbindungselemente - Prüfverfahren - Teil 311: Niedriger LuftdruckSérie aérospatiale - Organes de connexion électrique et optique - Méthodes d'essais - Partie 311: Basse
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