1、BRITISH STANDARDBS EN 2349-306:2006Aerospace series Requirements and test procedures for relays and contactors Part 306: Overload d.c. and a.c.The European Standard EN 2349-306:2006 has the status of a British StandardICS 49.060g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g
2、53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 2349-306:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2007 BSI 2007ISBN 978 0 580 50022 0N
3、ational forewordThis British Standard was published by BSI. It is the UK implementation of EN 2349-306:2006.The UK participation in its preparation was entrusted by Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology, to Panel ACE/6/-/4, Aerospace Switching devices.A l
4、ist of organizations represented on ACE/6/-/4 can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal ob
5、ligations.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 2349-306October 2006ICS 49.060English VersionAerospace series - Requirements and test procedures for relaysand contactors - Part 306: Overload d.c. and a.c.Srie arospatiale - Exigence
6、s et mthodes dessais desrelais et contacteurs - Partie 306 : Surcharges courantcontinu et alternatifLuft- und Raumfahrt - Anforderungen und Prfverfahren frRelais und Schaltschtze - Teil 306: berlast bei Gleich-und WechselstromThis European Standard was approved by CEN on 10 May 2006.CEN members are
7、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
8、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 a
9、s 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, Sloven
10、ia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN nation
11、al Members.Ref. No. EN 2349-306:2006: E2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Mounting method.4 4 Test procedures.4 5 Test criteria.5 6 Verification test5 EN 2349-306:20063 Foreword This document (EN 2349-306:2006) has been prepared by the AeroSpace and Defense Industries Ass
12、ociation of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. Th
13、is European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2007, and conflicting national standards shall be withdrawn at the latest by April 2007. Attention is drawn to the possibility that some of the
14、elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement thi
15、s European Standard: 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 the United Kin
16、gdom. EN 2349-306:20064 1 Scope 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. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated re
17、ferences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2349-100, Aerospace series Requirements and test procedures for relays and contactors Part 100: General requirements 1)EN 2349-303, Aerospace series
18、Requirements and test procedures for relays and contactors Part 303: Dielectric strength 3 Mounting method The switching device shall be wired in accordance with EN 2349-100. The rated overload current and the open circuit voltage shall be applied in accordance with product standard. The test sample
19、 shall be mounted in still air. 4 Test procedures 4.1 Each operating and resting contact shall be able to connect, conduct and disconnect the overload in accordance with the product standard. The operating and normally closed contacts shall be tested separately. 4.2 The coil of the switching device
20、shall be energized with the rated voltage during the test. The contacts shall be monitored during connection, conduction and disconnection. A functional defect of the test sample shall constitute a failure. A voltage drop across closed contacts over 10 % of the supply voltage shall constitute a fail
21、ure. During the test, the housing of the relay or contactor shall be connected to the d.c. earth or neutral wire of the electrical installation by a fuse with a rating of 5 % of the rated resistive contact current, but not greater than 3 A. 4.3 Blowing of the fuse shall constitute a failure. 4.4 Tes
22、t cycle: connection time: (0,2 0,05) s for a.c.; (0,5 0,05) s for d.c. disconnection time: (20 1) s. Number of switching cycles: see product standard.1) In preparation at the date of publication of this standard. EN 2349-306:20065 4.5 The temperature increase shall be measured for: plug-in relays: o
23、n the housing; screw-type connections: on the connector bolt. 5 Test criteria There shall be: no electrical or mechanical failure; no sticking or seizing of contacts; no blowing of the fuse; no temperature increase greater than 75 C. 6 Verification test Test in accordance with EN 2349-303. EN 2349-3
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