SIST EN 2349-306:2009
(Main)Aerospace series - Requirements and test procedures for relays and contactors - Part 306: Overload d.c. and a.c.
Aerospace series - Requirements and test procedures for relays and contactors - Part 306: Overload d.c. and a.c.
This standard specifies a method for testing the overload d.c. and a.c. of relays and contactors. It shall be used together with EN 2349-100.
Luft- und Raumfahrt - Anforderungen und Prüfverfahren für Relais und Schaltschütze - Teil 306: Überlast bei Gleich- und Wechselstrom
Diese Norm legt ein Verfahren zur Prüfung der Überlast bei Gleich und Wechselstrom von Relais und Schaltschützen fest. Sie ist in Verbindung mit EN 2349 100 anzuwenden.
Série aérospatiale - Exigences et méthodes d'essais des relais et contacteurs - Partie 306 : Surcharges courant continu et alternatif
Aeronavtika - Zahteve in preskusni postopki za releje in kontaktorje - 306. del: Preobremenitev pri enosmernem in izmeničnem toku
General Information
- Status
- Published
- Publication Date
- 02-Apr-2009
- Technical Committee
- I13 - Imaginarni 13
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 20-Mar-2009
- Due Date
- 25-May-2009
- Completion Date
- 03-Apr-2009
Overview
EN 2349-306:2006 is a CEN aerospace standard that specifies a method for overload d.c. and a.c. testing of relays and contactors. Intended to be used together with EN 2349-100 (general requirements), this part defines mounting, test procedures, pass/fail criteria and verification links for assessing relay and contactor behaviour under overload conditions in aerospace electrical systems.
Key topics and technical requirements
- Scope: Method for testing overload performance of relays and contactors under both dc and ac conditions.
- Mounting and wiring: Devices shall be wired in accordance with EN 2349-100 and mounted in still air for the test.
- Test conditions:
- Coil energized at the rated voltage throughout the test.
- Rated overload current and open‑circuit voltage applied according to the product standard.
- Housing tied to d.c. earth/neutral via a fuse rated at 5% of the rated resistive contact current but not exceeding 3 A.
- Switching and monitoring:
- Operating and normally closed contacts tested separately.
- Contacts monitored during connection, conduction and disconnection.
- Connection times: (0.2 ± 0.05) s for a.c., (0.5 ± 0.05) s for d.c.
- Disconnection time: (20 ± 1) s. Number of cycles as specified in the product standard.
- Failure criteria:
- Any functional defect = failure.
- Voltage drop across closed contacts > 10% of supply voltage = failure.
- Blowing of the protective fuse = failure.
- Temperature increase exceeding 75 °C (measured on relay housing for plug‑in relays, on connector bolt for screw‑type connections) = failure.
- Verification: Final verification testing referenced to EN 2349-303 (dielectric strength).
Applications and who uses it
- Design and qualification engineers: to validate relay/contactor performance under overload scenarios typical in aerospace platforms.
- Test laboratories: to set up standardised overload tests and document pass/fail results for certification.
- Procurement and quality assurance: to verify supplier components meet aerospace overload requirements.
- Certification bodies and OEMs: to demonstrate compliance with aerospace electrical equipment safety and reliability practices.
Related standards
- EN 2349-100 - General requirements for relays and contactors (must be used together).
- EN 2349-303 - Dielectric strength verification referenced in this part.
Keywords: EN 2349-306, overload testing, relays and contactors, aerospace standard, DC overload, AC overload, relay testing, contactor overload, CEN, ASD‑STAN.
Frequently Asked Questions
SIST EN 2349-306:2009 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Requirements and test procedures for relays and contactors - Part 306: Overload d.c. and a.c.". This standard covers: This standard specifies a method for testing the overload d.c. and a.c. of relays and contactors. It shall be used together with EN 2349-100.
This standard specifies a method for testing the overload d.c. and a.c. of relays and contactors. It shall be used together with EN 2349-100.
SIST EN 2349-306:2009 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.
SIST EN 2349-306:2009 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.Luft- und Raumfahrt - Anforderungen und Prüfverfahren für Relais und Schaltschütze - Teil 306: Überlast bei Gleich- und WechselstromSérie aérospatiale - Exigences et méthodes d'essais des relais et contacteurs - Partie 306 : Surcharges courant continu et alternatifAerospace series - Requirements and test procedures for relays and contactors - Part 306: Overload d.c. and a.c.49.060Aerospace electric equipment and systemsICS:Ta slovenski standard je istoveten z:EN 2349-306:2006SIST EN 2349-306:2009en,de01-maj-2009SIST EN 2349-306:2009SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 2349-306October 2006ICS 49.060 English VersionAerospace series - Requirements and test procedures for relaysand contactors - Part 306: Overload d.c. and a.c.Série aérospatiale - Exigences et méthodes d'essais desrelais et contacteurs - Partie 306 : Surcharges courantcontinu et alternatifLuft- und Raumfahrt - Anforderungen und Prüfverfahren fürRelais und Schaltschütze - Teil 306: Überlast bei Gleich-und WechselstromThis European Standard was approved by CEN on 10 May 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.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, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 2349-306:2006: ESIST EN 2349-306:2009
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