1、BRITISH STANDARDBS EN 2349-305:2006Aerospace series Requirements and test procedures for relays and contactors Part 305: Bounce timeThe European Standard EN 2349-305:2006 has the status of a British StandardICS 49.060g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54
2、g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 2349-305:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2007 BSI 2007ISBN 978 0 580 50021 3National forewo
3、rdThis British Standard was published by BSI. It is the UK implementation of EN 2349-305:2006.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 list of organiz
4、ations 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 obligations.Amen
5、dments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 2349-305October 2006ICS 49.060English VersionAerospace series - Requirements and test procedures for relaysand contactors - Part 305: Bounce timeSrie arospatiale - Exigences et mthodes dessais desr
6、elais et contacteurs - Partie 305 : Temps derebondissementLuft- und Raumfahrt - Anforderungen und Prfverfahren frRelais und Schaltschtze - Teil 305: PrellzeitThis European Standard was approved by CEN on 10 May 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stip
7、ulate 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 exis
8、ts 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
9、 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
10、 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 national Members.Ref. No. EN 2349-305:2006: E2 Contents Page Foreword3 1 S
11、cope 4 2 Normative references 4 3 Test procedures.4 4 Test criteria.4 EN 2349-305:20063 Foreword This document (EN 2349-305:2006) has been prepared by the AeroSpace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the
12、 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. This European Standard shall be given the status of a national standard, either by publication of an identical
13、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 elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsib
14、le 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 this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Gr
15、eece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 2349-305:20064 1 Scope This standard specifies a method for testing the bounce time of relays and co
16、ntactors. 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 references, only the edition cited applies. For undated references, the latest edition of the referenced document (includi
17、ng any amendments) applies. EN 2349-100, Aerospace series Requirements and test procedures for relays and contactors Part 100: General requirements 1)3 Test procedures 3.1 Bounce time shall be measured, both on the normally-open and normally-closed contacts, by applying the rated voltage on and off.
18、 3.2 The bounce time includes both the initial bounce, when the contacts close or open for the first time, and all additional bounces, see Figures 2 and 3. 3.3 The contact load shall be between 5 mA and 100 mA. The open contact voltage shall be 6 V d.c. max. for relays or contactors with ratings of
19、up to and including 25 A, and 28 V d.c. max. for relays or contactors with ratings above 25 A. 3.4 For qualification tests, five measurements shall be taken and recorded. 3.5 Figure 1 shows a typical test circuit. 3.6 The test shall be performed in such a way that the records cover all occurrences o
20、f bounce. 4 Test criteria The relay or contactor shall not exceed the bounce times specified in the product standard. 1) In preparation at the date of publication of this standard. EN 2349-305:20065 Figure 1 Test circuit for the determination of the operate, release and bounce times Figure 2 Switch
21、closure at t = 0, Operate time characteristics Key R1, R2resistor 60 DUT device under test (relay) 1 trigger input self-synchronous 2 signal input oscilloscope (vertical 3 ground input deflection) U1control voltage U2test voltage 6 V d.c. S switch aNO contact bNC contact Key 1 dynamic contact resist
22、ance effect t1operate time t2transfer time t3contact break bounce duration t4contact closing bounce duration (make bounces) EN 2349-305:20066 Figure 3 Switch opening at t = 0, Release time characteristics Key 1 dynamic contact resistance effect t2transfer time t3contact break bounce duration t5relea
23、se time t6contact make bounce duration EN 2349-305:2006blankBS EN 2349-305:2006BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the internation
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