1、BRITISH STANDARDBS EN 2349-304:2006Aerospace series Requirements and test procedures for relays and contactors Part 304: Operate and release timeThe European Standard EN 2349-304:2006 has the status of a British StandardICS 49.060g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g4
2、0g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 2349-304:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2007 BSI 2007ISBN 978 0 580 50020
3、6National forewordThis British Standard was published by BSI. It is the UK implementation of EN 2349-304:2006.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
4、 list 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
5、obligations.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 2349-304October 2006ICS 49.060English VersionAerospace series - Requirements and test procedures for relaysand contactors - Part 304: Operate and release timeSrie arospatiale - Exig
6、ences et mthodes dessais desrelais et contacteurs - Partie 304 : Temps denclenchementet de dclenchementLuft- und Raumfahrt - Anforderungen und Prfverfahren frRelais und Schaltschtze - Teil 304: Ansprechzeit undRckfallzeitThis European Standard was approved by CEN on 10 May 2006.CEN members are bound
7、 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 Centr
8、al 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
9、 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, S
10、pain, 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 national Me
11、mbers.Ref. No. EN 2349-304:2006: E2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Operate time .4 4 Release time.6 EN 2349-304:20063 Foreword This document (EN 2349-304:2006) has been prepared by the AeroSpace and Defence Industries Association of Europe - Standardization (ASD-STAN).
12、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. This European Standard shall be given the status of
13、 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 elements of this document may be the subject of p
14、atent 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 this European Standard: Austria, Belgium, Cyprus, Cz
15、ech 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 Kingdom. EN 2349-304:20064 1 Scope This standard spe
16、cifies a method for testing the operating (actuating) and releasing time 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 references, only the edition cite
17、d 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)ISO 2678, Environmental tests for aircraft equipment Insulati
18、on resistance and high voltage tests for electrical equipment 3 Operate time 3.1 Test procedures The operate time shall be measured from the application of the rated voltage to the coil until the last normally-open contact has closed, see Figure 2. The operate time shall be evaluated without bounce
19、time. 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 of up to and including 25 A rating, and 28 V d.c. for relays or contactors above 25 A rating. For qualification tests, five measurements shall be taken and recorded. Figu
20、re 1 shows a typical test circuit. 3.2 Test criteria The relay or contactor shall operate within the time specified in the product standard. 1) In preparation at the date of publication of this standard. EN 2349-304:20065 Figure 1 Test circuit for the determination of the actuation, release and boun
21、ce times Figure 2 Switch closure at t = 0, Operate time characteristics Figure 3 Switch opening at t = 0, Release 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 volta
22、ge U2test voltage 6 V d.c. S switch aNO contact bNC contact Key 1 dynamic resistance effect t1operate time t2transfer time t3contact break bounce duration t4contact closing bounce duration (make bounces) Key 1 dynamic contact resistance effect t2transfer time t3contact break bounce duration t5releas
23、e time t6contact make bounce duration EN 2349-304:20066 4 Release time 4.1 Test procedures The release time shall be measured from removal of the rated voltage, see Figure 3: for normally-open contacts: until the last normally-open contact has opened; for change-over contacts: until the last normall
24、y-closed contact has closed (this time includes the transfer time). The contact load shall be between 5 mA and 100 mA. The open contact voltage shall be 6 V d.c. for relays or contactors of up to and including 25 A rating, and 28 V d.c. for relays or contactors above 25 A rating. The release time sh
25、all be evaluated without bounce time. For qualification tests, five measurements shall be taken and recorded. Figure 1 shows a typical test circuit. 4.2 Test criteria The relay or contactor shall drop out within the time specified in the product standard. EN 2349-304:2006blankBS EN 2349-304:2006BSI3
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