EN 3841-510:2004

Aerospace series - Circuit breakers - Test methods - Part 510: Strength of signal contact terminals

This standard specifies a method of verifying the strength of signal contact terminals of circuit breakers.
It shall be used together with EN 3841-100.

Luft- und Raumfahrt - Schutzschalter - Prüfverfahren - Teil 510: Festigkeit der Signalkontakt-Anschlüsse

Série aérospatiale - Disjoncteurs - Méthodes d'essais - Partie 510 : Résistance des éléments de raccordement auxiliaires

La présente norme spécifie une méthode pour vérifier la résistance des éléments de raccordement auxiliaires des disjoncteurs.
Elle doit être utilisée conjointement avec EN 3841-100.

Aeronavtika - Odklopniki - 510. del: Trdnost priključkov signalnih kontaktov

General Information

• Status: Published
• Publication Date: 21-Dec-2004
• Withdrawal Date: 29-Jun-2005
• ICS: 49.060 - Aerospace electric equipment and systems
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 2 - Electrical
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 22-Dec-2004
• Completion Date: 22-Dec-2004
• Ref Project: SIST EN 3841-510:2005 - Aerospace series - Circuit breakers - Test methods - Part 510: Strength of signal contact terminals

Overview

EN 3841-510:2004 is a European standard developed by CEN that specifies test methods for assessing the strength of signal contact terminals in aerospace circuit breakers. As part of the aerospace series of standards, it provides a precise and reliable method to verify the mechanical integrity and robustness of signal contact terminals, ensuring their performance in demanding aerospace environments. This standard must be used in conjunction with EN 3841-100, which covers general test methods for circuit breakers.

The primary focus of EN 3841-510 is on verifying that signal contact terminals can withstand repeated mechanical stresses without failure, thereby guaranteeing reliability and safety in aerospace electrical systems.

Key Topics

• Scope and Purpose
  The standard defines a method to test the mechanical strength and durability of signal contact terminals used in aerospace circuit breakers. It ensures contacts remain mechanically stable and electrically continuous under specified mechanical loads.

• Test Setup and Mounting
  Circuit breakers are mounted as per the instructions in EN 3841-100. The contact pins are wired and installed in defined inserts, with the signal contacts loaded at the lowest current and voltage specified by the product’s technical specification.

• Test Procedures

  • Insertion and Extraction Cycles: Each contact pin undergoes 20 cycles of insertion and extraction using specific tools outlined in EN 3841-509.
  • Axial Preload and Force Application: Contacts are subjected to a defined axial preload and then loading force applied gradually (not exceeding 5 N/s) for 10 seconds to measure axial displacement.
  • Radial Load Testing: A bending load is applied radially in four main directions related to the circuit breaker housing, maintaining force for 1 minute in each direction to simulate mechanical stresses during operation.

• Performance Requirements
  The electrical circuit must remain intact and functional throughout testing. The applied mechanical forces shall not cause breakage or degradation of the contact terminals, ensuring operational safety and reliability.

Applications

EN 3841-510:2004 is essential for aerospace manufacturers, quality assurance engineers, and testing laboratories involved in:

• Aerospace Electrical Systems
  Ensuring circuit breakers with signal contacts meet stringent mechanical strength criteria required in aircraft and spacecraft environments.

• Component Qualification and Certification
  Verifying that contact terminals endure mechanical stresses like vibration, handling, and operational forces encountered during aerospace missions.

• Design Validation
  Supporting designers in validating the robustness of contact terminals and connection interfaces in circuit breakers for critical aerospace applications.

• Maintenance and Reliability Assurance
  Providing standardized test methods to assess wear and mechanical integrity of signal contacts during lifecycle evaluations.

Related Standards

• EN 3841-100
  Aerospace series – Circuit breakers – Test methods – Part 100: General test methods for circuit breakers.
  EN 3841-510 must be used in conjunction with this standard for mounting and general testing procedures.

• EN 3841-509
  Aerospace series – Circuit breakers – Test methods – Part 509: Insertion and extraction forces of signal contact terminals.
  Defines tools and procedures referenced for insertion and extraction cycles in EN 3841-510.

• Additional Aerospace Electrical Standards
  Other relevant aerospace standards for circuit breakers and electrical equipment ensure comprehensive evaluation of performance and safety in aerospace systems.

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Keywords: EN 3841-510, aerospace circuit breakers, signal contact terminals, test methods, mechanical strength test, contact retention force, aerospace electrical standards, CEN aerospace standards, circuit breaker reliability, aerospace electrical components testing.

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-2005
$HURQDYWLND2GNORSQLNLGHO7UGQRVWSULNOMXþNRYVLJQDOQLKNRQWDNWRY
Aerospace series - Circuit breakers - Test methods - Part 510: Strength of signal contact
terminals
Luft- und Raumfahrt - Schutzschalter - Prüfverfahren - Teil 510: Festigkeit der
Signalkontakt-Anschlüsse
Série aérospatiale - Disjoncteurs - Méthodes d'essais - Partie 510 : Résistance des
éléments de raccordement auxiliaires
Ta slovenski standard je istoveten z: EN 3841-510:2004
ICS:
49.060 /HWDOVNDLQYHVROMVND Aerospace electric
HOHNWULþQDRSUHPDLQVLVWHPL equipment and systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 3841-510
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2004
ICS 49.060
English version
Aerospace series - Circuit breakers - Test methods - Part 510:
Strength of signal contact terminals
Série aérospatiale - Disjoncteurs - Méthodes d'essais - Luft- und Raumfahrt - Schutzschalter - Prüfverfahren - Teil
Partie 510 : Résistance des éléments de raccordement 510: Festigkeit der Signalkontakt-Anschlüsse
auxiliaires
This European Standard was approved by CEN on 10 September 2004.
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. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3841-510:2004: E
worldwide for CEN national Members.

Contents Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Method .4

Foreword
This document (EN 3841-510:2004) has been prepared by the European Association of Aerospace
Manufacturers -
...